ROYAL ARSENAL Buildings 10, 11 and Royal Carriage Square Energy Statement

Transcription

1 ROYAL ARSENAL Buildings 10, 11 and Royal Carriage Square Energy Statement

2 Energy Statement Berkeley Homes (East Thames) Ltd Buildings 10, 11 and Royal Carriage Square Final Author: Jonathan Peck BSc (Hons), MSc July

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4 Buildings 10, 11 and Royal Carriage Square Energy Statement July 2016 DOCUMENT CONTROL RECORD REPORT STATUS: FINAL Version Date Reason for issue Author Project Manager Checked by v Draft J Peck D Sinclair D Sinclair v Final Draft J Peck D Sinclair D Sinclair v Final J Peck D Sinclair D Sinclair ABOUT HODKINSON CONSULTANCY Our team of technical specialists offer advanced levels of expertise and experience to our clients. We have a wide experience of the construction and development industry and tailor teams to suit each individual project. We are able to advise at all stages of projects from planning applications to handover. Our emphasis is to provide innovative and cost effective solutions that respond to increasing demands for quality and construction efficiency. This report has been prepared by Hodkinson Consultancy using all reasonable skill, care and diligence and using evidence supplied by the design team, client and where relevant through desktop research. Hodkinson Consultancy can accept no responsibility for misinformation or inaccurate information supplied by any third party as part of this assessment. This report may not be copied or reproduced in whole or in part for any purpose, without the agreed permission of Hodkinson Consultancy of Harrow, London. 1

5 Executive Summary The purpose of this Energy Statement is to demonstrate that the proposed redevelopment of Buildings 10 and 11 on the Royal Arsenal Riverside site in the Royal Borough of Greenwich is considered sustainable, as measured against relevant local, regional and national planning policies. This energy strategy has been formulated following the London Plan Energy Hierarchy: Be Lean, Be Clean and Be Green. The overriding objective in the formulation of the strategy is to maximise the reductions in CO 2 emissions through the application of this Hierarchy with a cost-effective and technically appropriate approach and to minimise the emission of other pollutants. Build Types The development summarised in this application concerns both new build and refurbished energy strategies, covering both residential and commercial space. The majority of the dwellings for this application, as well as over 800m² of commercial space, will be new build development. All new build elements will be assessed under Part L (2013) of Building Regulations (2010). A proportion of dwellings, as well as nearly1300m² of commercial space, will be constructed from the refurbishment of Buildings 10 and 11. All refurbished dwellings will be assessed under Part L1B (2010), but recognition will be given to the limitations inherent in the need to maintain the character of buildings which are Listed when undergoing refurbishment. An additional storey, comprising of 4 apartments, will be constructed within the reconstructed roof space of Building 11. This will also be assessed under Part L1B. Energy Strategy Following an examination of both local and national policy requirements, it has been determined that the redevelopment of Buildings 10 and 11 at the Royal Arsenal Riverside site is to target a site wide reduction in CO₂ emissions of 35% beyond a determined baseline case. A range of Be Lean energy efficiency measures are proposed for the three different build elements. This is in line with the London Plan Energy Hierarchy. They enable the proposed new build elements to meet or exceed the baseline cases through fabric efficiency alone. In accordance with the Energy Hierarchy, the feasibility of decentralised energy production as a Be Clean measure has also been carefully examined. In line with the Royal Arsenal Masterplan, a heat network has been constructed to provide the main source of heat and power to the development. As it is already in operation, it is expected that all elements of Buildings 10 and 11, once constructed, will connect to this 2

6 Buildings 10, 11 and Royal Carriage Square Energy Statement July 2016 network. The heat network is highly efficient, and will enable the site to reduce its CO₂ emissions by 64.1% over the overall baseline case. This represents a very high level of sustainable design. In accordance with the Energy Hierarchy, the full spectrum of Be Green renewable energy generating technologies have been evaluated. However, the utilisation of CHP severely restricts the renewable energy technologies that are feasible and appropriate. Any renewable energy technologies that are to be included must be complementary and not conflict with the CHP engine. In addition, as a 64.1% reduction in CO₂ emissions has been predicted following Be Clean measures for the site, it is clear that the development has already achieved the required CO₂ reduction as specified in London Plan Policy 5.2. Table 1 demonstrates the reduction in Regulated and Total CO₂ reductions after each stage of the Energy Hierarchy. Carbon dioxide emissions (kgco 2.a) Regulated Improvement Total Improvement New Builds Baseline 150, % 272, % After Be Clean 85, , 200 Refurbished Elements Baseline 402, % 490, % After Be Clean 112, , 900 Additional Storey to B11 Baseline 6, % 8, % After Be Clean 2, 800 5, 500 Development Total Reduction over Baseline Case 358, % 358, % Table 1: CO2 Emissions at each stage of the energy hierarchy 3

7 Contents Executive Summary 2 Contents 4 1. INTRODUCTION 5 2. DEVELOPMENT OVERVIEW 6 3. RELEVANT PLANNING POLICY 8 4. BASELINE EMISSIONS ASSESSMENT BE LEAN : ENERGY EFFICIENCY MEASURES BE CLEAN: DECENTRALISED ENERGY BE GREEN: RENEWABLE ENERGY TECHNOLOGIES SUMMARY APPENDICES 28 Appendix A Building Regulations and Be Lean Calculations 28 Appendix B SBEM BRUKL documents for Non-residential Areas 28 Appendix C DER & TER Worksheets New Build Dwellings 28 Appendix D DER Worksheets Dwellings assessed under Part L1B 28 Appendix E CHP Datasheets 28 Appendix F Low Carbon and Renewable Energy Technologies 28 Appendix G Low Carbon and Renewable Energy Technologies Feasibility Table 28 Appendix H Overheating Assessment 28 4

8 Buildings 10, 11 and Royal Carriage Square Energy Statement July INTRODUCTION 1.1 This Energy Statement has been prepared by Hodkinson Consultancy, a specialist energy and environmental consultancy for planning and development, appointed by Berkley Homes (East Thames) Ltd. This statement is in support of the planning application for the proposed redevelopment of two existing buildings, known as Buildings 10 and 11, on the Royal Arsenal Riverside development in the Royal Borough of Greenwich. 1.2 The application consists of a mix of new build and refurbished development. Where applicable, differences due to differing build types have been clearly highlighted throughout the Energy Statement. 1.3 The formulation of the energy strategies for the proposed development takes into account several important concerns and priorities. These include: > To achieve the maximum viable reduction in carbon dioxide (CO 2) emissions through the application of the London Plan Energy Hierarchy with an affordable, deliverable and technically appropriate strategy; > Provision of high quality low energy buildings that are adapted to future changes in climate; > To minimise, to the lowest possible extent, emissions of pollutants such as oxides of nitrogen (NO X) and particulate matter, thereby minimising the effects on local air quality. 1.4 This statement first establishes three baseline assessments of the energy demands and associated CO 2 emissions for the three differing build types at Buildings 10 and 11. The report will then follow The London Plan Energy Hierarchy approach of Be Lean, Be Clean and Be Green to enable the maximum viable reductions in Regulated and Total CO 2 emissions over these baselines. 5

9 2. DEVELOPMENT OVERVIEW Site Location 2.1 The redevelopment of Buildings 10 and 11 is to take place on the Royal Arsenal Riverside site. This is situated on the South bank of the River Thames in the Royal Borough of Greenwich, about 0.5 miles North of Woolwich Arsenal rail station. N Development Description Figure 1: The Site Location (Google Maps) 2.2 At the heart of Royal Arsenal Riverside is one of the largest concentrations of Grade I and Grade II Listed buildings converted for residential use in Britain. 6

10 Buildings 10, 11 and Royal Carriage Square Energy Statement July 2016 Building 11 Building 10 Figure 2: The Development Site (AHMM Architects) 2.3 This application seeks to retain and redevelop two of the remaining listed buildings, alongside the delivery of a revised Royal Carriage Square, in order to secure the long-term future of these heritage assets and open them up to the public for the first time. 2.4 The development description is as follows: Full Planning Permission and Listed Building Consent for the change of use and redevelopment of two Grade II Listed Buildings to provide a residential led mixed-use development comprising 146 residential units with refuse/recycling and cycle parking, 2,150sqm commercial uses and a public square. 2.5 Work on Building 10, also known as The Royal Carriage Factory, will involve the demolition of the central part of the existing structure. This will be replaced by a 10 storey apartment block with over 500m 2 of commercial space on a further floor below. The existing shell of Building 10 will be retained on either side of the new central structure and renovated to accommodate further commercial space. 2.6 Work on Building 11, also known as The Officers House, will involve the renovation of the existing structure, as well as the addition of a new floor within the roof space. A second similarly sized 7

11 structure will be built directly behind. These will only be joined with an open-ended atrium, so for the purpose of the energy assessment will be taken as two separate building envelopes. The renovation and extension of Building 11 will provide a total of 34 dwellings and nearly 500m 2 of commercial space. 3. RELEVANT PLANNING POLICY 3.1 The following planning policies and requirements will inform the Energy Strategy for the proposed development. National Planning Policy 3.2 The National Planning Policy Framework (NPPF) was published on 27 March This document sets the overarching policies for development in England and states that: At the heart of the NPPF is a presumption in favour of sustainable development, which should be seen as a golden thread running through both plan-making and decision-taking. For decision-taking this means: > Approving development proposals that accord with the development plan without delay; and > Where the development plan is absent, silent or relevant policies are out-of-date, granting permission unless: > Any adverse impacts of doing so would significantly and demonstrably outweigh the benefits, when assessed against the policies in this Framework taken as a whole; or > Specific policies in this Framework indicate development should be restricted. 3.3 Paragraph 95 of the NPPF states that: To support the move to a low carbon future, local planning authorities should: > Plan for new development in locations and ways which reduce greenhouse gas emissions; > Actively support energy efficiency improvements to existing buildings; and > When setting any local requirement for a building s sustainability, do so in a way consistent with the Government s zero carbon buildings policy and adopt nationally described standards. 8

12 Buildings 10, 11 and Royal Carriage Square Energy Statement July 2016 Regional Policy: London Plan 3.4 The London Plan sets out an integrated economic, environmental, transport and social framework for the development of London over the next years. 3.5 The following outlines key policies set out in the London Plan which must be addressed by new developments and which are considered relevant to this application. 3.6 Policy 5.2 Minimising Carbon Dioxide Emissions requires that all residential and non-residential major development between achieve a 40% improvement on 2010 Building Regulations. The London Plan Sustainable Design and Construction SPG (2014) updates this target stating that the Mayor will adopt a carbon dioxide improvement target beyond Part L 2013 of 35%. 3.7 GLA Guidance on Energy Assessments (April 2016) states that for refurbishment elements the baseline is taken as the pre-refurbishment condition. 3.8 Policy 5.3 Sustainable Design and Construction states that the highest standards of sustainable design and construction should be achieved in London to improve the environmental performance of new developments. Major development should meet the minimum standards outlined in the London Plan Supplementary Planning Guidance on this stop and this should be clearly demonstrated. The standards includes the following sustainable design principles (summarised): > Minimising CO 2 emissions; > Avoiding internal overheating and contributing to the urban heat island effect; 3.9 Policy 5.5 Decentralised Energy Networks states that the Mayor expects 25 per cent of the heat and power used in London to be generated through the use of localised decentralised energy systems by The Mayor will prioritise the development of decentralised heating and cooling networks at the development and area wide levels, including larger scale heat transmission networks Policy 5.6 Decentralised Energy requires that all developments should evaluate the feasibility of Combined Heat and Power (CHP) systems, and examine the opportunities to extend the system beyond the site boundary to adjacent sites Policy 5.7 Renewable Energy states that within the framework of the energy hierarchy, major development proposals should provide a reduction in expected carbon dioxide emissions through the use of on-site renewable energy generation, where feasible Policy 5.8 Innovative Energy Technologies encourages the more widespread use of innovative energy technologies to reduce use of fossil fuels and carbon dioxide emissions. 9

13 3.13 Policy 5.9 Overheating and Cooling seeks to reduce the impact of the urban heat island effect, reduce potential overheating and reduce reliance on air conditioning systems The London Plan Supplementary Planning Guidance Sustainable Design and Construction (2014) was adopted in April The SPG provides relevant guidance on: > Energy efficient design; > Meeting carbon dioxide reduction targets; > Decentralised energy; > How to off-set carbon dioxide where the targets set out in the London Plan are not met Each section of the Supplementary Planning Guidance sets out the Mayor s priorities for the particular topic area, which the Mayor seeks developers to address in all development proposals. Some sections also contain best practice ambitions, which the Mayor strongly encourages be delivered in appropriate developments. To support these approaches, the Supplementary Planning Guidance includes detailed guidance for boroughs and developers, signposts to further information and best practice examples. Local Policy: Royal Borough of Greenwich Core Strategy 3.16 The Royal Borough of Greenwich s Local Plan (July 2014) is the core strategy document for the Borough. Policy E1: Carbon Emissions stresses the requirement to adhere to the London Plan policies for energy measures Policy H5 Housing Design requires the achievement of BREEAM Excellent standard for Domestic Refurbishment Policy DH1 Design requires non-residential buildings in major developments to achieve a BREEAM rating of Excellent The Planning Obligations Guidance SPD (July 2015) highlights further points to note from the Local Plan document, including the need to: > Maximise energy conservation, through effective layout, orientation, use of appropriate materials, detailing and landscape design; > Benefit the Borough by helping mitigate and adapt to climate change; > Promote local distinctiveness by providing a site-specific design solution; > Provide a positive relationship between the proposed and existing urban context by taking account of architectural, historical and archaeological features and their settings. 10

14 Buildings 10, 11 and Royal Carriage Square Energy Statement July 2016 Summary 3.20 In accordance with the London Plan, all elements of the development are required to achieve a 35% reduction in CO₂ emissions beyond the baseline assessment The following section will outline the how the baseline cases for each of the three build types have been calculated. 4. BASELINE EMISSIONS ASSESSMENT Methodology 4.1 This statement first establishes a baseline assessment of the energy demands and associated CO 2 emissions for the build types. 4.2 The report will then follow The London Plan Energy Hierarchy approach of Be Lean, Be Clean and Be Green to enable the maximum viable reductions in Regulated and Total CO 2 emissions over the baselines. 4.3 The estimated annual energy demands have been calculated using Standard Assessment Procedure (SAP 2012) and Simplified Building Energy Model (SBEM 2013) methodology. SAP calculates the Regulated energy demands associated with hot water, space heating and fixed electrical items. The unregulated dwelling energy demands for appliances and cooking are taken from BRE standard occupancy calculations. SBEM calculates the Regulated energy demands associated with hot water, space heating and fixed electrical items. The unregulated energy demands are taken from additional SBEM output documents. New Build Elements 4.4 The new build aspects of Buildings 10 and 11 have been assessed against a baseline case derived from Part L1A (2013). 4.5 The compliant baseline case provides that the development meets the Target Emission Rate (TER). A separate Target Fabric Energy Efficiency (TFEE) target will also have to be met. Refurbished Elements 4.6 As well as the addition of a similar new building to the rear of Building 11, the existing structure at the front is to be retained and refurbished. The refurbishment dwelling elements are to be assessed under Part L1B (2013) of the Building Regulations. Unlike with the new build dwellings, a baseline case has been derived from an assessment of the existing building. This is in line with the GLA s guidance on energy assessments. 11

15 4.7 The baseline has been developed through a combination of available site evidence and guidance from within SAP (2012) Appendix S for historical buildings. 4.8 The same specification has also been taken for the refurbished commercial space. 4.9 The following specification has been assumed: > Single glazing with a U-value of 4.8 W/m 2 K and a g-factor of 0.76; > External wall U-value 1.56W/m 2 K (~100mm brickwork, empty cavity, 100mm brickwork); > Party wall Solid with an effective 0.00W/m 2 K; > Ground floor U-value 0.54 W/m 2 K (150mm hardwood, no insulation); > Roof U-value 0.71 W/m 2 K (Timber frame, no insulation); > Dwelling air leakage 15m 3 /m 2 /hr (default untested); > Non-residential air leakage of 15m 3 /m 2 /hr (SBEM convention for buildings of this age and type) > Communal gas boiler system (75% efficiency). No thermostatic control, primary pipework assumed to be insulated. Additional Storey to Existing part of Building As a portion of the additional storey is comprised of the existing building below it is expected that these homes will be assessed under Part L1B of the Building Regulations As stated in Part L1B: In general, new extensions to historic or traditional dwellings should comply with the standards of energy efficiency as set out in this Approved Document These standards are set out under Table 2 of Part L1B, Standards for new thermal elements. The baseline case for the new storey to be added onto the existing structure of Building 11 will therefore be assessed against a baseline derived from these performance values The standards from which this baseline will be calculated are as follows: > Double glazing with a U-value of 1.6 W/m 2 K; > External wall U-value 0.28 W/m 2 K; > Ground floor U-value 0.22 W/m 2 K; 12

16 Buildings 10, 11 and Royal Carriage Square Energy Statement July 2016 > Roof U-value 0.16 W/m 2 K if insulation at ceiling level, 0.18 W/m 2 K if insulation at rafter level; > Air leakage 15m 3 /m 2 /hr (default untested); > Communal gas boiler system (86% efficiency). This is in line with the minimum requirements for new boiler efficiencies in the Non Domestic Building Services Compliance Guide (2013). CO₂ Baselines for Building Types 4.14 Table 2 shows the Regulated and Total CO 2 baseline cases based on these fabric specifications. Regulated CO 2 Emissions (kg/yr) Total CO 2 Emissions (kg/yr) New Build development 150, , 300 Refurbished Elements 402, , 000 Additional Storey to B11 6, 200 8, 900 TOTAL 559, , 200 Table 2: Regulated CO₂ Baseline Cases 4.15 Summary CO 2 calculations can be found in Appendix A. Full baseline pre-refurbishment case DER worksheets for the refurbished units and TER worksheets for the new build are also provided in Appendix C and Appendix D. An SBEM BRUKL document for the pre-refurbishment case is also provided for the non-residential areas. 5. BE LEAN : ENERGY EFFICIENCY MEASURES 5.1 In line with the London Plan Energy Hierarchy, the following Be Lean measures (energy efficiency) are proposed. Building Fabric NEW BUILD ELEMENTS 5.2 The following measures are to be specified to enable the new build elements of Buildings 10 and 11 to achieve the Part L1A TER baseline case: > External wall U-value of 0.18 W/m 2.K (minimum 350mm wall thickness); > Ground/exposed floor U-value of 0.13 W/m 2.K; 13

17 > Roof U-value of 0.10 W/m 2.K; > Double-glazed windows with a U-value of 1.30 W/m 2.K. 5.3 These values represent a high level of sustainable design and construction. REFURBISHED ELEMENTS 5.4 As Listed Buildings, the refurbishment work on Buildings 10 and 11 will need to be done with great care so as not to detrimentally impact on the character of either building. 5.5 Endeavours will be made to insulate core elements such as walls, roofs and floors where it can be considered feasible. It is expected that as a minimum an insulated plaster finish will be added to the internal area of the external walls. 5.6 It is expected that double-glazed sash windows will be fitted to each of the refurbished dwellings. This demonstrates an improvement in energy efficiency of the building whilst still retaining the character of the original glazing. 5.7 In addition to assessing thermal performance, preventing condensation will also be assessed during the detailed design stage for each element. ADDITIONAL STOREY TO EXISTING PART OF BUILDING As outlined in Section 4, the new dwellings which are to form the extension to Building 11 will be designed in accordance with the requirements of Part L1B, Standards for new thermal elements. Ventilation & Air Permeability NEW BUILD ELEMENTS 5.9 It is initially proposed to install Mechanical Ventilation with Heat Recovery (MVHR) to all new build elements. These systems will remove stale air and odours, whilst retaining the heat within the building For the new build dwellings it is expected that units with 1 bathroom are to have a specific fan power of 0.64 W/l/s. Those with 2 bathrooms are expected to have a specific fan power of 0.72 W/l/s. Figure 3 demonstrates how an MVHR system works. 14

18 Buildings 10, 11 and Royal Carriage Square Energy Statement July 2016 Figure 3: MVHR in operation 5.11 Alternatively, it would be possible to achieve the same energy efficiency standard through use of a centralised Mechanical Extract Ventilation (MEV) system in each flat along with improvements to other elements. Such a strategy may be adopted at detailed design stage if considered appropriate Air tightness standards will conform to, and exceed, Approved Document Part L requirements. The air permeability rate will be targeted at 3.5m 3 /hr.m 2 or less for the new build dwellings An air permeability rate of 7.0 m 3 /hr.m 2 or less has been targeted for the new build commercial areas. Both of these targets represent a high level of air tightness. REFURBISHED ELEMENTS AND ADDITIONAL STOREY TO EXISTING PART OF BUILDING Natural ventilation with individual extract fans to all bathrooms and kitchens will enable dwellings built under both these strategies to achieve a good level of ventilation Under Part L1B there are no requirements for the undertaking of an air test. Nonetheless, good design and construction practices, along with the achievement of the performance standards for the building fabric, should represent a high standard of air tightness for the parts of the development which are not to be assessed as new build elements. Lighting & Electricity All Homes 5.16 Energy efficient lighting will be installed in 100% of internal fittings in the dwellings. 15

19 5.17 It is very difficult to design and construct homes to reduce the unregulated electricity demands, because this is almost entirely dependent on the occupant of a home and can vary substantially. However, the Applicant is committed to ensuring that all efforts are made to enable the residents to minimise their unregulated electricity consumption. Lighting Non-Residential 5.18 Specified lighting will be low-wattage (likely to require <2W/m²/100lux) and designed to CIBSE Illuminance levels. Appropriate demand reducing lighting controls, such as occupancy sensing PIRs and daylight dimmers will also be specified where appropriate, allowing light output to be automatically adjusted to suit prevailing conditions. Zoning of lighting circuits also allows greater benefit to be made of natural daylight in the areas where it is available, without compromising light levels further away from windows Additionally, high frequency ballasts and control gear will be utilised where appropriate to further reduce energy demand. Space Heating & Hot Water 5.20 The space heating requirement of all build elements will be reduced by the fabric, air tightness and ventilation measures detailed above On developments of this scale, there are inherent benefits in the utilisation of a communal system. This is due to the ability to account for diversity of demand in the sizing of the combined plant, a factor that isn t possible with individual systems A communal heat distribution network is already installed and in operation on the Royal Arsenal Riverside site. All dwellings in of Buildings 10 and 11 will connect to this for requirements of space heating and hot water. It is also expected that the refurbished non-residential spaces will be connected for the provision of space heating and hot water All non-residential spaces are currently expected to be constructed to Shell & Core stage by the Applicant. As such, the final uses and fit-out specification requirements are not known. As a worstcase, it has therefore been assumed that cooling may be provided in the highly energy efficient new build non-residential units. For these areas it has also therefore been assumed that the cooling systems would also provide space heating, as opposed to the expense and technical complexity of combining two separate systems (local cooling and district heating). A COP of 4 has been assumed for local heating from heat pumps as well as a cooling efficiency of At this stage it is expected that hot water to all units will be provided from the heat network In line with Energy Statement Guidance (GLA, 2016), the improvement of the Be Lean case over the baseline on each of the build types has been formulated using a 100% contribution to heat demand 16

20 Buildings 10, 11 and Royal Carriage Square Energy Statement July 2016 from the communal gas boilers only. The current models in use in the site wide Energy Centre have efficiencies of 86.5%. Thermal Bridging New Builds 5.26 In well insulated buildings, as much as 30% of heat loss can occur through thermal bridges, which occur when highly conductive elements (e.g. metal studs) in the wall construction enable a low resistance escape route for heat. The benefits of addressing thermal bridging are illustrated in Figure 4, below. Figure 4: Thermal Bridging 5.27 The design allows for improvements over the SAP default y-value, specifically: > Use Accredited Construction Details (ACDs) for the window surrounds; > Use of ACDs for external corner (normal) junctions; > Calculation of bespoke psi-values for the standard construction details that are to be used on the development. This is likely to include the interfaces between the dwellings, as well as junction between dwellings and any balconies or external walkways. Limiting the Risk of Summer Overheating 5.28 In line with the Cooling Hierarchy within London Plan Policy 5.9, it is proposed to reduce the need for active cooling as far as possible. All dwellings will therefore be subject to measures that minimise the risk of summer overheating to an acceptable level. 17

21 5.29 This will be done through the specification of passive measures such as low fabric U-values, openable windows to allow natural ventilation, solar control glazing, and highly reflective internal blinds All dwellings will allow convective-ventilation and night purging through open-able windows. These natural ventilation concepts are illustrated in Figure 5 and will reduce the build-up of heat. Figure 5: Natural Ventilation 5.31 Solar control glazing will also be provided where appropriate, with the following solar transmittance (g) values initially specified to enable all new build dwellings to minimise the risk of overheating: > Building 10: Top Floor 0.42 > Building 10: All other floors 0.6 > Building 11: All new build units A full dynamic thermal analysis of overheating risk has been undertaken. This is attached as Appendix H. This shows that all assessed homes are expected to comply with the requirements Furthermore, the initial SBEM calculations undertaken on the non-residential areas do not show an unacceptable risk of high solar gains. Full dynamic assessments of thermal comfort in these areas can be undertaken once a fit-out specification is available. 18

22 Buildings 10, 11 and Royal Carriage Square Energy Statement July 2016 CO2 Emissions Following Be Lean Measures 5.34 Table 3 below outlines the reduction in CO₂ emissions following the inclusion of all the above energy efficiency measures for each of the energy strategies. It can be seen that all build types achieve or exceed the baseline assessment through Be Lean measures alone. Carbon dioxide emissions (kgco 2.a) Regulated Improvement New Builds - Part L1A (2013) Baseline 150, % After Be Lean Measures 147, 400 Refurbished Elements Baseline 402, % After Be Lean Measures 238, 000 Additional Storey to B11 Baseline 6, % After Be Lean Measures 6, 200 Development Total Reduction 168, % Table 3: CO₂ reductions following Be Lean measures 5.35 All new build dwellings sampled in the energy strategies are also required to meet the separate Target Fabric Energy Efficiency (TFEE) standard. Table 4 demonstrates how each of the sampled units has met this requirement. Representative Dwelling Type Unit Area (m²) No. Units Carbon dioxide emissions (kgco 2.a) TFEE (kwh/m²/yr) DFEE (kwh/m²/yr) 2B Exposed Floor Mid Terrace B Mid Floor End Terrace B Mid Floor Mid Terrace B Top Floor End Terrace B Top Floor Mid Terrace B Exposed Floor Mid Terrace B Mid Floor Mid Terrace B Maisonette End Terrace Area Weighted Average Reduction Achieved 5.0% Table 4: TFEE performance for sampled new build dwellings 19

23 6. BE CLEAN: DECENTRALISED ENERGY 6.1 In line with Policy 5.6 of the London Plan, the feasibility of decentralised heating networks as a Be Clean measure has been evaluated. This is the next step in the Energy Hierarchy after Be Lean. The London Plan outlines the following order of preference: - > Connection to existing heating or cooling networks > Site wide CHP network > Communal heating and cooling Connection to Existing Heat Network 6.2 In line with the Royal Arsenal Masterplan, a site-wide Energy Centre (shown in Figure 6) has been constructed where the Royal Arsenal Riverside heat network is operated from. The Energy Centre is located on the East side of the current Building 10. It is intended that the proposed development connects to the heat network and Energy Centre. Figure 6: Royal Arsenal Energy Centre 20

24 Buildings 10, 11 and Royal Carriage Square Energy Statement July The Energy Centre, in accordance with the Energy Implementation Plan (2013), has been sized to accommodate the heat requirements for the whole Royal Arsenal Riverside site. 6.4 Gas CHP engines are designed to provide 70% of the heat required on an annual basis. This enables the CHP engines to operate at full capacity as this is the base heat load. The first of the CHP engines has been installed (Figure 7), with the second engine to be installed as the connected heat load increases during the build-out of the masterplan. Figure 7: Royal Arsenal Energy Centre Gas CHP Engine 6.5 By locally utilising both the electricity and heat generation of an engine, CHP enables substantial reductions in primary energy demand and CO 2 emissions over conventional methods this is illustrated in Figure 8, below. 21

25 Figure 8: CHP diagram 6.6 The remaining 30% of the load accommodates peak demand. As this tends to fluctuate in a way the base load does not, it is more appropriately met through gas boilers. These have been installed in the Energy Centre to satisfy the peak demands in heat. 6.7 Following the connection of all elements in this application to the site-wide CHP heat network, the reductions in CO₂ emissions over the Be Lean measures are estimated in Table 5. It can be seen that the development as a whole further reduces its CO₂ emissions by 48.7 % beyond the Be Lean case. 22

26 Buildings 10, 11 and Royal Carriage Square Energy Statement July 2016 Carbon dioxide emissions (kgco 2.a) Regulated Improvement New Builds After Be Lean 147, % After Be Clean 89, 500 Refurbished Elements After Be Lean 238, % After Be Clean 112, 700 Additional Storey to B11 After Be Lean 6, % After Be Clean 2, 800 Development Total Reduction over Be Lean case 190, % Table 5: Regulated CO₂ reductions shoeing improvements of Be Clean over Be Lean measures 6.8 Datasheets for the CHP engine used have been included as Appendix E. 7. BE GREEN: RENEWABLE ENERGY TECHNOLOGIES 7.1 The final part of the London Plan Energy Hierarchy is Be Green which examines the feasibility of renewable energy technologies. 7.2 In line with the Royal Arsenal Riverside energy strategy, Buildings 10 and 11 are connected to the site wide heat CHP network. This strategy severely restricts the renewable energy technologies that are feasible and appropriate. Any renewable energy technologies that are to be included must be complementary and not conflict with the CHP engine. 7.3 It should also be noted that the combination of Be Lean and Be Clean measures enable the development to meet, and exceed, the requirements of London Plan Policy 5.2. Therefore, no further measures are required by policy. Table 6 demonstrates this. 23

27 Carbon dioxide emissions (kgco 2.a) Regulated Improvement New Builds Baseline 150, % After Be Clean 85, 500 Refurbished Elements Baseline 402, % After Be Clean 112, 700 Additional Storey to B11 Baseline 6, % After Be Clean 2, 800 Development Total Reduction over Baseline Case 358, % Table 6: Regulated CO₂ reductions following Be Clean measures 7.4 Nonetheless, in line with the Energy Hierarchy, an assessment of the feasibility of renewable energy technologies will be undertaken. Further information on renewable generating technologies can also be found in Appendix F. Biomass Boiler 7.5 Biomass boilers generate heat on a renewable basis as they are run on biomass fuel which is virtually carbon neutral. A biomass boiler would require a central plant room and heat distribution network, so would therefore be in clear conflict with the existing CHP network. Air and Ground Source Heat Pumps (ASHPs and GSHPs) 7.6 Whilst reducing energy significantly, heat pumps replace gas as the heating fuel with electricity, which is more carbon intensive. Electricity is also a more expensive fuel than gas, so energy bills are not necessarily reduced by heat pumps as much as by other technologies. 7.7 GSHPs are able to provide substantial reductions in energy. However, GSHPs require costly ground excavation works to bury the coils boreholes would be required at the site due to the high space requirements of ground coils. 7.8 Air Source Heat Pumps are a more economical alternative to GSHPs as they do not require ground works. However, the performance of ASHPs can be lower than for GSHPs so therefore the reductions in CO₂ are correspondingly low. 24

28 Buildings 10, 11 and Royal Carriage Square Energy Statement July 2016 Wind Turbines 7.9 Small rooftop wind turbines are designed to generate electricity from the wind for use within each dwelling Urban rooftop wind turbines do not generally perform sufficiently to well to warrant their installation, due to the low and turbulent wind conditions present. They are therefore likely to remain technically unfeasible It has therefore been concluded that wind turbines are not a suitable technology at either site. Solar Thermal Panels 7.12 Solar thermal panels generate heat for hot water. They would therefore conflict with the CHP engine and would not enable any substantial further reductions in CO 2 emissions The benefits of solar thermal panels are constrained by the seasonal variation in solar radiation. This means that solar thermal panels can only deliver a maximum of 60% of the annual hot water demand. In contrast, a CHP engine can provide 100% of the hot water demand of a development and is therefore able to provide more substantial reductions in CO 2 emissions. Additionally, CHP comes before solar thermal in the London Plan energy hierarchy. The use of solar thermal panels within the Proposed Development has been discounted. Photovoltaic (PV) Panels 7.14 PV panels generate electricity from solar radiation. The generating potential of PV panels is not dependent on development demand, but only on available roof space for installation and ensuring that they are not overshadowed As an electricity generating technology, PV panels would not conflict with CHP engines. However, PV panels are substantially more costly per kw of generation capacity than a CHP engine. They are therefore not as cost-effective at achieving CO 2 reductions. In line with the London Plan Energy Hierarchy, this Energy Strategy has prioritised and maximised the CHP engine ahead of renewable energy technologies When considering CO 2 reductions upon connection to the site wide Energy Centre, the policy requirements have been met through a focus on energy efficiency and CHP. No further technologies are therefore required. 25

29 8. SUMMARY 8.1 The purpose of this Energy Statement is to demonstrate that the proposed redevelopment of Buildings 10 and 11 on the Royal Arsenal Riverside site in the Royal Borough of Greenwich is considered sustainable, as measured against relevant local, regional and national planning policies. 8.2 This energy strategy has been formulated following the London Plan Energy Hierarchy: Be Lean, Be Clean and Be Green. The overriding objective in the formulation of the strategy is to maximise the reductions in CO 2 emissions through the application of this Hierarchy with a cost-effective and technically appropriate approach and to minimise the emission of other pollutants. Build Types 8.3 The development summarised in this application concerns both new build and refurbished energy strategies, covering both residential and commercial space. 8.4 The majority of the dwellings for this application, as well as over 800m² of commercial space, will be new build development. All new build elements will be assessed under Part L (2013) of Building Regulations (2010). 8.5 A proportion of dwellings, as well as over 1300m² of commercial space, will be constructed from the refurbishment of Buildings 10 and 11. All refurbished dwellings will be assessed under Part L1B (2010), but recognition will be given to the limitations inherent in the need to maintain the character of buildings which are Listed when undergoing refurbishment. 8.6 An additional storey, comprising of 4 apartments, will be constructed within the reconstructed roof space of Building 11. This will also be assessed under Part L1B. Energy Strategy 8.7 Following an examination of both local and national policy requirements, it has been determined that the redevelopment of Buildings 10 and 11 at the Royal Arsenal Riverside site is to target a site wide reduction in CO₂ emissions of 35% beyond a determined baseline case. 8.8 A range of Be Lean energy efficiency measures are proposed for the three different build elements. This is in line with the London Plan Energy Hierarchy. They enable the proposed new build elements to meet or exceed the baseline cases through fabric efficiency alone. 8.9 In accordance with the Energy Hierarchy, the feasibility of decentralised energy production as a Be Clean measure has also been carefully examined. In line with the Royal Arsenal Masterplan, a heat network has been constructed to provide the main source of heat and power to the development. As it is already in operation, it is expected that all elements of Buildings 10 and 11, once constructed, will connect to this network. The heat network is highly efficient, and will enable the site to reduce 26

30 Buildings 10, 11 and Royal Carriage Square Energy Statement July 2016 its CO₂ emissions by 64.1% over the overall baseline case. This represents a very high level of sustainable design In accordance with the Energy Hierarchy, the full spectrum of Be Green renewable energy generating technologies have been evaluated. However, the utilisation of CHP severely restricts the renewable energy technologies that are feasible and appropriate. Any renewable energy technologies that are to be included must be complementary and not conflict with the CHP engine. In addition, as a 64.1% reduction in CO₂ emissions has been predicted following Be Clean measures for the site, it is clear that the development has already achieved the required CO₂ reduction as specified in London Plan Policy Table 1 demonstrates the reduction in Regulated and Total CO₂ reductions after each stage of the Energy Hierarchy. Carbon dioxide emissions (kgco 2.a) Regulated Improvement Total Improvement New Builds Baseline 150, % 272, % After Be Clean 85, , 200 Refurbished Elements Baseline 402, % 490, % After Be Clean 112, , 900 Additional Storey to B11 Baseline 6, % 8, % After Be Clean 2, 800 5, 500 Development Total Reduction over Baseline Case 358, % 358, % Table 1: CO2 Emissions at each stage of the energy hierarchy 27

31 9. APPENDICES Appendix A Building Regulations and Be Lean Calculations Appendix B SBEM BRUKL documents for Non-residential Areas Appendix C DER & TER Worksheets New Build Dwellings Appendix D DER Worksheets Dwellings assessed under Part L1B Appendix E CHP Datasheets Appendix F Low Carbon and Renewable Energy Technologies Appendix G Low Carbon and Renewable Energy Technologies Feasibility Table Appendix H Overheating Assessment 28

32 Appendix A Building Regulations & Be Lean Calculations

33 Appendix A: Building Regulations and Be Lean Calculations SAP / SBEM Outputs per Unit Unit Type Test Unit Location Space Heating - LTHW Space Heating - VRV Energy (kwh/yr) Hot Water Regulated Electrical Unregulated Appliances & Cooking Energy (kwh/m2/yr) Regulated CO2 (kg/m2/yr) Total CO2 (kg/m2/yr) TFEE DFEE TER DER/BER TER DER/BER 2B Exposed Floor (mid) New Build, Building 10 1,987 2, , B Mid Floor (end) New Build, Building 10 2,008 1, , B Mid Floor (mid) New Build, Building , , B Top Floor (end) New Build, Building 10 5,286 2, , B Top Floor (mid) New Build, Building 10 3,241 2, , B Exposed Floor (end) New Build, Building 11 3,345 2, , B Mid Floor (mid) New Build, Building 11 1,032 2, , B Maisonette (end) New Build, Building 11 4,496 2, , B Maisonette (mid) Refurbishment, Building 11 11,906 2, , B Mid Floor (end) Refurbishment, Building 11 7,509 1, , B Top Floor (mid) Storey Extension, Building 11 4,688 1, , New Commercial Space New Build, Building 10 & 11 4,808 3,141 25,479 36, Refurb Commercial Space Refurb, Building 10 & ,533 41,040 63, ,

34 Appendix A: Building Regulations and Be Lean Calculations Energy Demands & CO2 Emissions for Whole Site Unit Type Unit Area (m2) No. Units Space Heating Space Heating - VRV Energy (kwh/yr) Hot Water Regulated Electrical Unregulated Appliances & Cooking Energy (kwh/yr) Regulated CO2 (kg/yr) TFEE DFEE TER DER/BER TER DER/BER 2B Exposed Floor (mid) ,858 23,161 6,188 19,957 37,120 33,208 13,467 12,932 23,824 23,290 1B Mid Floor (end) ,273 63,901 13,715 43,750 87,850 97,125 33,845 36,103 56,551 58,809 1B Mid Floor (mid) , ,712 23,870 79,050 97,073 87,904 48,410 44,268 89,437 85,295 3B Top Floor (end) ,572 4,610 1,518 5,039 12,960 12,477 3,799 4,067 6,415 6,683 3B Top Floor (mid) ,444 13,463 4,050 13,352 27,397 25,581 9,020 9,213 15,950 16,142 2B Exposed Floor (end) ,382 8,340 2,278 7,065 17,917 16,758 5,725 5,875 9,392 9,542 2B Mid Floor (mid) ,318 20,493 5,069 16,865 23,409 21,452 9,910 9,289 18,663 18,042 3B Maisonette (end) ,480 11,601 3,938 13,105 35,960 28,254 10,180 9,404 16,981 16,206 2B Maisonette (mid) ,718 6,735 1,498 6,689 15,927 9,947 19,398 13,418 1B Mid Floor (end) ,075 15,917 2,953 12,500 31,745 17,945 38,233 24,433 1B Top Floor (mid) ,752 7,375 1,161 5,054 6,247 6,247 8,870 8,870 TOTAL - Residential Area Weighted Average (/m2) Improvement over Target Total CO2 (kg/m2/yr) 318, ,307 66, , , , , , , , % 12.2% 7.6% New Commercial Space ,808 3,141 25,479 36,157 16,369 16,283 35,134 35,048 Refurb Commercial Space 1 1, ,533 41,040 63, , , , , ,379 TOTAL - Commercial 721,533 4,808 44,181 88, , , , , ,428 Area Weighted Average (/m2) Improvement over Target 39.0% 31.0% TOTAL - Whole Development Area Weighted Average (/m2) Improvement over Target 1,040,243 4, , , , , , , , , , % 30.0% 21.8%

35 Appendix B SBEM BRUKL documents for Non-residential Areas

36 --~ BRUKL Output Document c~ ;{) ~~ M ( ~OVCtTirrlcnt Compliance with England Building Regulations Part L 2013 Project name Building 10 Shell and Core As designed Date: Mon Ju111 16:03: Administrative information Building Details Address:, Certification tool Calculation engine: SBEM Calculation engine version: v5.2.g.3 Interface to calculation engine: DeslgnBuilder SBEM Interface to calculation engine version: v4.7.0 BRUKL compliance check version: v5.2.g.3 Owner Details Name: Telephone number: Address:,, Certifier details Name: Donald Sinclair Telephone number: Address:, Harrow, HA1 3AW Criterion 1: The calculated C02 emission rate for the building should not exceed the target C~ emission rate from the notional building, kgc02/m 2.annum 19.1 Target C~ emission rate (TER), kgc02/m 2.annum 19.1 Building C~ emission rate (BER), kgc~/rn2.annum 19 Are emissions from the building less than or equal to the target? BER =< TER Are as built details the same as used in the BER calculations? ~ --- Sep~rate submission Criterion 2: The performance of the building fabric and the building services should achieve reasonable overall standards of energy efficiency Values not achieving standards in the Non-Domestic Building Services Compliance Guide and Part L are displayed in red. Building fabric Element Ua-umlt Ua.Calc Ui-Calc Surface where the maximum value occurs* Wall** Block 1 - Zone 2 W 6 Floor Block 1 -Zone 2_S 3 Roof Block 1 - Zone 4 R 4 j Windows***, roof windows, and rooflights Block 1 - Zone 2 G 9 Personnel doors "No external personnel doors" Vehicle access & similar large doors "No external vehicle access doors" I High usage entrance doors "No external high usage entrance doors" U..uma = Umltlng area-weighted average U-values [W/(m>K)] Ua.c.ic = Calculated area-weighted average U-values [W/(m'K)] U"eo~c = Calculated maximum individual element U-values [W/(ITTK)) I There might be mora than one surface where the maximum U-value occurs. Automatic U-value check by the tool does not apply to curtain walls whose limiting standard Is similar to that for windows. Display windows and similar glazing are excluded from the U-value check. N.B.: Neither roof ventilators (Inc. smoke vents) nor swimming pool basins are modelled or checked against the limiting standards by the tool. j Air Permeability I Worst acceptable standard I This building J m 3 /(h.m2) at 50 Pa I 1o 11 I I I Page 1 of6

37 Building services The standard values listed below are minimum values for efficiencies and maximum values for SFPs. Refer to the Non-Domestic Building Services Compliance Guide for details. Whole building lighting automatic monitoring & targeting with alarms for out-of-range values I NO Whole building electric power factor achieved by power factor correction < Project HVAC Heating efficiency Cooling efficiency Radiant efficiency SFP [W/(1/s)] This system Standard value 2.5* N/A N/A N/A N/A Automatic monitoring & targeting with alarms for out-of-range values for this HVAC system J NO HR efficiency Standard shown is for all types >12 kw output, except absorption and gas engine heat pumps. For types <=12 kw output, refer to EN for limiting standards. 1- Project DHW Water heating efficiency Storage loss factor [kwh/litre per day] This building Standard value 0.8 N/A - Local mechanical ventilation, exhaust, and terminal units 10 System type in Non-domestic Building Services Compliance Guide A B c Local supply or extract ventilation units serving a single area Zonal supply system where the fan is remote from the zone Zonal extract system where the fan is remote from the zone 0 Zonal supply and extract ventilation units serving a single room or zone with heating and heat recovery E F G H I local supply and extract ventilation system serving a single area with heating and heat recovery Other local ventilation units Fan-assisted terminal VAV unit Fan coil units Zonal extract system where the fan is remote from the zone with grease filter Zone name SFP (W/(1/s)] 10 of system type A B c D E F G H I - ~ HR efficiency Standard value Zone Standard Block 1 - Zone N/A Block 1 - Zone N/A Block 1 - Zone N/A Shell and core configuration Zone Block 1 -Zone 2 Block 1 - Zone 4 Assumed shell? NO NO Block 1 -Zone 1 NO ~~ General lighting and display lighting luminous efficacy [lm/w] Zone name luminaire Lamp Display lamp General lighting [W] Standard value Block 1 - Zone Block 1 -Zone Page 2 of6

38 General lighting and display lighting Luminous efficacy [lm/w] Zone name Luminaire Lamp Display lamp General lighting [W] Standard value Block 1 - Zone Criterion 3: The spaces in the building should have appropriate passive control measures to limit solar gains Zone Solar gain limit exceeded? (%) Internal blinds used? Block 1 - Zone 2 NO (-32.8%) NO Block 1 - Zone 4 NO (-31.5%) NO Block 1 - Zone 1 NO (-65.4%) NO Criterion 4: The performance of the building, as built, should be consistent with the calculated BER Separate submission Criterion 5: The necessary provisions for enabling energy-efficient operation of the building should be in place Separate submission EPBD (Recast): Consideration of alternative energy systems Were alternative energy systems considered and analysed as part of the design process? Is evidence of such assessment available as a separate submission? Are any such measures included in the proposed design? NO NO NO Page 3 of6

39 Technical Data Sheet (Actual vs. Notional Building) Building Global Parameters Building Use Actual Notional.% Area l:aull~ing T'ype Area [m2j 54is " ~ Extemlal area [m2] _ Weather LON LON!~~~~~~J~_I~f!!~_~P~L ~verei_g~--~1'1~~-~_!l~-~!t.<j. 38<!:~~ Averl:JgEIIJ~value (l!\'/m2t<).. _Q~ Alpha value*[%] "-rcenlage ol the building's average heel transfer coefficient which ia due to thermal bridging 100 F{esLJU! ttn:s and 81 Offices and Workshop bualnesaes f.l) En Genua! lndust11al and Spr;,;ial inriuslnal Groups f3i3 Storage "' Distribution 1 Hotels f~~r.:::_:.!dcr;ti(j~ 1rr.:,t and Care Hornn ;.) Res~<Jenti;-_11 lnst. F<ts1dont!\1! ~-)chool~; HesHJenti;~i l: ts! UnlvE~rsHtf:~'J and!,oik~qes Secure F~osidt::ntv~! lnst n,,,~hiential q;ac(;s 1)1 NoP-res:dentiai Ins! Cornr:nmityDay CrHJ!rP u-1 ~-Jun-re~;!dentml!n~:'JL. Libn:HIC~}. fv1u~)ciur'll$, and Gcrdt::nes D 1 f\4on"'osid(;nt!al!n~-~- D1 Non-msldfmtiai ln~_,;t Eciucat;on Pmnary Health Can; Building D I ~~on-rt~sh.len~!al!nst Cro\vn anc1 County Courb D? General t\ssef11bly and I f"sure. NH:Jhl Clubs nnri Theatres Cru P<irks ~?4 hr!~ alone uhl1ty Energy Consumption by End Use (kwh/m 2 ] H~~~ing CC?<?~ in~ ~~-~i!ia._ry Li~h~n~... Hot water q~ipment* TOTAL** Actual Notional ~---- > - --~ -~-.~~ ~ ~' Energy used by equipment does not oount towards the total for calculating emiasions. " Total Ia net of any etectrlcel enargy dltptaoed by CHP generatots. H applicable. Energy Production by Technology [kwh/m 2 ] Actual,,... "--" - ~---- ~~~~~~!~i~~ ~~~~ ~Q" Wind turbines 0 0 (;1::!~.-~e.l'l~~ators ~_c:>~r. th.~r:!fll:ji ~.~t~f11~-- 0 Energy & C0 2 Emissions Summary Actual Notional Notional Heating+ cooling demand [MJ/~ 2 ] Primary energy*. [kwhirrr] Total emissions (kgtm2] _ ' Primary nargy it net of any eledrical-rgy diaplaoed by CHP generat0111. If applicable. Page 4 of6

40 Heat dem [MJ/m2) Cool dem [MJ/m2) Heat con [kwh/m2) Cool con [kwh/m2) Aux con (kwh/m2) Heat SSEFF Cool SSEER Heat gen SSEFF Cool gen SSEER ST HS HFT CFT = Heating energy demand = Cooling energy demand = Heating energy consumption = Cooling energy consumption = Auxiliary energy consumption =Heating system seasonal efflclency (for notional building, value depends on activity glazing class) = Cooling system seasonal energy efficiency ratio = Heating generator seasonal efficiency = Cooling generator seasonal energy efficiency ratio = System type = Heat source = Heating fuel type = Cooling fuel type Page 5 of6

41 Key Features The BCO can give particular attention to items with specifications that are better than typically expected. Building fabric Element Ui-Typ Ui-Min Surface where the minimum value occurs* Wall Block 1 -Zone 2 W_6 Floor Block 1 -Zone 2_8_3 Roof Block 1 - Zone 4 R 4 Windows, roof windows, and rooflights Block 1 - Zone 2 G 9 Personnel doors "No external personnel doors" Vehicle access & similar large doors "No external vehicle access doors" High usage entrance doors "No external high usage entrance doors" U;.ryp =Typical individual element U-values [WI(m 2 K)] U>-Min =Minimum Individual element U-values [W/(m'K)] There might be llloi"e than one surface where the minirnllm U-value occurs Air Permeability Typical value This building ~ m 3 /(h.m 2 ) at 50 Pa Page 6 of6

42 BRUKL Output Document Compliance with England Building Regulations Part L 2013 ~ HM Governrncnt Project name Building 10 -Refurbishment Shell and Core As designed Date: Fri Jul1514:14: Administrative information Building Details Address:, Certification tool Calculation engine: SBEM Calculation engine version: v5.2.g.3 Interface to calculation engine: DesignBuilder SBEM Interface to calculation engine version: v4.7.0 BRUKL compliance check version: v5.2.g.3 Owner Details Name: Telephone number: Address:,, Certifier details Name: Donald Sinclair Telephone number: Address:, Harrow, HA1 3AW Criterion 1: The calculated C02 emission rate for the building should not exceed the target The building does not comply with England Building Regulations Part L 2013 COt emission rate from the notional building, kgc0 2 /m 2.annum 98.6 Target COt emission rate (TER), kgc02/m 2.annum 98.6 Building COt emission rate (BER), kgcct/rn2.annum Are emissions from the building less than or equal to the target? Are as built details the same as used in the BER calculations? BER > TER Separate submission Criterion 2: The performance of the building fabric and the building services should achieve reasonable overall standards of energy efficiency Values not achieving standards in the Non-Domestic Building Services Compliance Guide and Part L are displayed in red. Building fabric Element Ua.umlt u.~.k: u.~alc Surface where the maximum value occurs* Wall** Block 3 - Zone 1 W 6 Floor Block 3- Zone 1 S 12 Roof Block 3 - Zone 1 R 3 Windows***, roof windows, and rooflights Block 3 - Zone 1 G 4 Personnel doors "No external personnel doors" Vehicle access & similar large doors "No external vehicle access doors" High usage entrance doors "No external high usage entrance doors" u~... = Umitlng area-weighted average U-values [W/{m>K)J u~... = Calculated area-weighted average U-values [W/{m'K)] u~cak: = Calculated maximum individual element U-values [W/(m'K)] There might be m<)f"e than one surface where the maximum U-value occurs. Automatic U-value check by the tool does not apply to curtain walls whose limiting standard is similar to that for windows. Display windows and similar glazing are excluded from the U-value check. N.B.: Neither roof ventilators {inc. smoke vents) nor swimming pool basins are modelled or checked against the limiting standards by the tool. Air Permeability m 3 /(h.n1} at 50 Pa - Worst acceptable standard 1 This building J Page 1 of6

43 Building services The standard values listed below are minimum values for efficiencies and maximum values for SFPs. Refer to the Non-Domestic Building Services Compliance Guide for details. Whole building lighting automatic monitoring & targeting with alarms for out-of-range values I NO Whole building electric power factor achieved by power factor correction I < DH Heating efficiency Cooling efficiency Radiant efficiency SFP [W/(1/s)] This system Standard value 0.91* N/A N/A N/A N/A Automatic monitoring & targeting with alarms for out-of-range values for this HVAC system HR efficiency Standard shown is for gas single boiler systems <=2 MW output. For single boiler systems >2 MW or multi-boiler systems, (overall) limiting efficiency is For any individual boiler In a multi-boiler system, limiting efficiency is I NO 1- Project DHW Water heating efficiency Storage loss factor [kwh/litre per day] This building Hot water provided by HVAC system - Standard value N/A N/A I ID A B c D E F G H I Local mechanical ventilation, exhaust, and terminal units System type in Non-domestic Building Services Compliance Guide Local supply or extract ventilation units serving a single area Zonal supply system where the fan is remote from the zone Zonal extract system where the fan is remote from the zone Zonal supply and extract ventilation units serving a single room or zone with heating and heat recovery Local supply and extract ventilation system serving a single area with heating and heat recovery Other local ventilation units Fan-assisted terminal VAV unit Fan coil units Zonal extract system where the fan is remote from the zone with grease filter Zone name SFP [W/(1/s)] ID of system type A B c D E F G H I HR efficiency - Standard value Zone I Standard Block 3 - Zone IN/A Shell and core configuration ~Zone ~sumed shell? ~ General lighting and display lighting Luminous efficacy [lm/w] Zone name Luminaire Lamp Display lamp General lighting [W] Standard value Block 3 - Zone _L._ -- Criterion 3: The spaces in the building should have appropriate passive control measures to limit solar gains Zone Solar gain limit exceeded? (%) T Internal blinds used?l Block 3 - Zone 1 YES {+227%} T NO - -, Page 2 of6

44 Criterion 4: The performance of the building, as built, should be consistent with the calculated BER Separate submission Criterion 5: The necessary provisions for enabling energy-efficient operation of the building should be in place Separate submission EPBD (Recast): Consideration of alternative energy systems Were alternative energy systems considered and analysed as part of the design process? Is evidence of such assessment available as a separate submission? Are any such measures included in the proposed design? NO NO NO Page 3 of6

45 ~-----~.. Technical Data Sheet (Actual vs. Notional Building) Building Global Parameters Actual Notional -~ Area [m2] E:Xiemal-area-[m~ ~:s Weather LON LON ln~_lt_ra~i()~jr:!f!~~~-~~~~l 35 -== _. -~ ~\1~~.9*3 ~-r\<!l!~~r\<:ei ~~KL 1627 ~-----~~Q.87 Averagf3Y:YCIIIJCil (V\'/m~ Alp~a vciiijt:t:j~] Pernen~J~ige ol the bl.lildlng'a ll'olerage heel transfer ooelllciont which is due to thermal bridging Building Use % Area Building Type 100 A 1 IA2 Retari/F 1nancial and Profess1onal servrces A3/MIA5 Restau,.nts and CafeiiDrlnklng EatJTakeawaya 81 Offices and Wor~.shop busrnesses 82 to 87 Gf~ncrdl Industrial and Special industrial Groups 88 Storaoe or Distribution C1 Hotels C2 f<e,r,,dcn!ral ln~.t Hosp:talc; and Care Hol!los C2 Residential lnst F\osrdentlal schools C2 Residentiallnst.: Unrversitucs and collngns C2A Secure ResidentJallnst Residllntial spacos 01 Non-residnntiallnst. CornrnunityiOay Centre 01 Non-residentiallnst.. Libraries. Museums, and Gallenes 01 Non-residential lnst. Education 01 Non-res d<jnlial Ins!.. Pnmary Health Care Burlding Di Non-residentral lnst Crown and County Courts D2 General Assembly and Le1sure, N1ght Clubs and Tr1eatrc:s Others Passenger lermin1lls Others: Emergency sorvrces Others Miscellaneous 24hr ac\ivitres Others: Car Parks 24 hrs Others Stand iilone util1ty block Energy Consumption by End Use [kwh/m 2 ) Actual,.,._,_ Notional Heating Cooling 0 0 ~ ~ ~~- Auxiliary Lighting Hot water g~!pment TOTAL** Energy uaed by equipment does not <>lunt towan:la the total for calculatlng emioelons. " Tolallo net of any ttectrlclll -rgy dleptaood by CHP genet8lonl, H appfic8ble. Energy Production by Technology (kwh/m 2 ] ~-~E!()Y().!.~~~--~~tEI~Il1~... Wind turbines Actual 0 0 CHP generators _i) 0 ()1(itt_~EI~!_~ystc:~ll1~ 0 0 Notional 0 0 Energy & C0 2 Emissions Summary Actual Notional Heating+ cooling demand [MJ/rrt] Primary energy* [kwh/rrt] 1572-: Total emissi()~sjkg/m 2 ] 274-: Primary energy ia net of any eledrical -rvy displaced by CHP generators, if applicable. Page 4 of6

46 Heat dem (MJ/m2] Cool dem [MJ/m2) Heat con [kwh/m2] Cool con (kwhlm2] Aux con [kwh/m2] Heat SSEFF Cool SSEER Heat gen SSEFF Cool gen SSEER ST HS HFT CFT = Heating energy demand = Cooling energy demand = Heating energy consumption = Cooling energy consumption = Auxiliary energy consumption =Heating system seasonal efficiency (for notional building, value depends on activity glazing class) = Cooling system seasonal energy efficiency ratio = Heating generator seasonal efficiency = Cooling generator seasonal energy efficiency ratio = System type = Heat source = Heating fuel type = Cooling fuel type Page 5 of6

47 Key Features The BCO can give particular attention to items with specifications that are better than typically expected. Building fabric Element Ut-Typ U1-111n Surface where the minimum value occurs* Wall Block 3 - Zone 1 W 6 Floor Block 3- Zone 1 S 12 Roof Block 3 - Zone 1 R 5 Windows, roof windows, and rooflights Block 3 - Zone 1 G 4 Personnel doors "No external personnel doors" Vehicle access & similar large doors "No external vehicle access doors" High usage entrance doors "No external high usage entrance doors" U~-r"' = Typical individual element U-values [W/(m'K)) U Min :: Minimum individual element U-values [W/(m 2 K)] There might be more than one surface where the minimum U-value occurs. I Air Permeability I m 3 /(h.m 2 ) at 50 Pa Typical value This building 5 T 3s Page 6 of6

48 BRUKL Output Document Compliance with England Building Regulations Part L 2013 ~)HMGovctT1mcnt Project name Building 10 Refurbishment Shell and Core As designed Date: Fri Jul1515:07: Administrative information Building Details Address:, Certification tool Calculation engine: SBEM Calculation engine version: v5.2.g.3 Interface to calculation engine: DesignBuilder SBEM Interface to calculation engine version: v4.7.0 BRUKL compliance check version: v5.2.g.3 Owner Details Name: Telephone number: Address:,. Certifier details Name: Donald Sinclair Telephone number: Address:, Harrow, HA1 3AW Criterion 1: The calculated C02 emission rate for the building should not exceed the target The building does not comply with England Building Regulations Part L 2013 C~ emission rate from the notional building, kgc02/m 2.annum 98.6 Target C~ emission rate (TER), kgcoim 2.annum 98.6 Building C02 emission rate (BER), kgc~/rnl.annum Are emissions from the building less than or equal to the target? BER > TER Are as built details the same as used in the BER calculations? Separate submission Criterion 2: The performance of the building fabric and the building services should achieve reasonable overall standards of energy efficiency Values not achieving standards in the Non-Domestic Building Services Compliance Guide and Part L are displayed in red. Building fabric Element Ua-umlt Ua-calc U1-ca1c Surface where the maximum value occurs* Wall** Block 3 - Zone 1 W 6 Floor Block 3- Zone 1 S 12 Roof Block 3 - Zone 1 R 3 Windows***, roof windows, and rooflights Block 3 - Zone 1 G 4 Personnel doors "No external personnel doors" Vehicle access & similar large doors "No external vehicle access doors" High usage entrance doors "No external high usage entrance doors" Uoo~.1m~ = Umiting area-weighted average U-values [W/(m 2 K)J U..co~e = Calculated area-weighted average U-values [W/(m'K)) U c..c = Calculated maximum individual element U-values [W/(m'K)] There might be more than one surface where the maximum U-value occurs. Automatic U-value check by the tool does not apply to curtain walls whose limltlng standard is similar to that for windows. Display windows and similar glazing are excluded from the U-value check. N.B.: Neither roof ventilators (inc. smoke vents) nor swimming pool basins are modelled or checked against the limiting standards by the tool Air Permeability ] Worst acceptable standard This building m 3 /(h.rnz) at 50 Pa ]10 15* Buildings with less than 500 m' total useful floor area may avoid the need for a pressure test provided that the air permeability Is taken as 15 m'/(h.m') at 50 Pa. Paaa 1 ~ 6

49 Building services The standard values listed below are minimum values for efficiencies and maximum values for SFPs. Refer to the Non-Domestic Building Services Compliance Guide for details. Whole building lighting automatic monitoring & targeting with alarms for out-of-range values I NO Whole building electric power factor achieved by power factor correction < DH Heating efficiency Cooling efficiency Radiant efficiency SFP [W/(1/s)] This system Standard value 0.91* N/A N/A N/A N/A Automatic monitoring & targeting with alarms for out-of-range values for this HVAC system I NO HR efficiency Standard shown Is for gas single boiler systems <=2 MW output. For single boiler systems >2 MW or multi-boiler systems, (overall) limiting efftclency Is For any Individual boiler In a multi-boiler system, limiting efftclency Is Project DHW ~ Water heating efficiency Storage loss factor [kwh/litre per day] This building Hot water provided by HVAC system - Standard value N/A N/A Local mechanical ventilation, exhaust, and terminal units 10 System type in Non-domestic Building Services Compliance Guide A B c D E F G H I Local supply or extract ventilation units serving a single area Zonal supply system where the fan is remote from the zone Zonal extract system where the fan is remote from the zone Zonal supply and extract ventilation units serving a single room or zone with heating and heat recovery Local supply and extract ventilation system serving a single area with heating and heat recovery Other local ventilation units Fan-assisted terminal VAV unit Fan coil units Zonal extract system where the fan is remote from the zone with grease filter Zone name Block 3 - Zone 1 10 of system type Standard value A B SFP [W/(1/s)] HR efficiency c D E F G H I Zone [ Standard L N/A Shell and core configuration [Zone I ~umed shell? lli2 General lighting and display lighting Luminous efficacy [lm/w] Zone name Luminaire Lamp Display lamp General lighting [W] Standard value Block 3 - Zone Criterion 3: The spaces in the building should have appropriate passive control measures to limit solar gains I Zone 1 Solar gain limit exceeded? (%) Internal blinds used? r Block 3 - Zone 1 1 NO (-16.6%) YES Page 2 of6

50 ~ ~ ~ Criterion 4: The performance of the building, as built, should be consistent with the calculated BER Separate submission Criterion 5: The necessary provisions for enabling energy-efficient operation of the building should be in place Separate submission EPBD (Recast): Consideration of alternative energy systems Were alternative energy systems considered and analysed as part of the design process? Is evidence of such assessment available as a separate submission? Are any such measures included in the proposed design? NO NO NO Page 3 of6

51 Technical Data Sheet (Actual vs. Notional Building) Building Global Parameters Area [nf] External area [m2] Weather ~~~~tr~tl()~ J~~~-~-S.Q~~],6-Y~E~~e-~n~~-c!<lr\~.. ~!t<l Average U-value [W/m2K] Notional ~~-~ LON " -~ ~ Alpha value (%] Percentage allhe building' - oe hoat trans"" ooelllcieot which ia due to lheftnii bridging Building Use % Area Building Type 100 A1/A2 f{e:tati!ftnancial and P TJfesstonal servio:s A31A41A5 RNtaurJntl and CafHIDrlnklng &.t./takeawaya B 1 Offices and Wor!o-sl1op businesse. s 82 to 87 General Industrial <~nd Spe<:mllndustni'll Groups Bil Storage or Distribution C1 Hoteh c;;; Hm;id ~n\ial lnst Ho:;pttal:, amj Care Hornn;, C2 Restdl;ntial lnst RPstdenttal <>chools C2 RestclentiallnsL Untvers;ttPS and c:olleqes C;;A Secure Hc"stdentFJIInsl r~esh.~.:::ntwl spaces D1 Non-msidentlalln:;t Connnuruty.'Day CfintrP D 1 NurHesldenttal lnst Libraries, Museums, anrl Gallt:m;s D I Nonresidential In st.. Education D1 Non-residfmtiallnst Pnrnary Health Care Bu1lding D 1 Non--residenlial In st. Crown and County Courts D2 General Assembly and Le1sure, Night Clubs ond Theiitres Others: Passon(l>.lf terrnmals Others. Emmgency servrces Olh ns. Miscellaneous 24hr acttvitres Others Car f'm"s 1'4 hrs O~hers StHnd dlono ut1hty block Energy Consumption by End Use [kwh/m 2 ] Actual Notional HeatinQ CO()Iir\Q 0 Auxili~ry... ~ _ ,- ~, ~ "" Lighting Hot water "- Equipment* <>-- --~ " ""-"" TOTAL** Energy used by equipment does not count tow81d the total lor Cllil<:ulating emiaoions. " T otalle not of any oleettlcal -rgy dltplaoed by CHP genamtors, H applicable. Energy Production by Technology [kwh/m 2 ] Photovoltaic ~ystems Wind turbines CHP generators Solar th~ert\~~-~~tems... Actual Notional 0...:; - - ~ - ~ Energy & cq Emissions Summary Actual Notional Heating+ cooling demand [MJlrlf] ~ ~ Primary energy [kwhlnt] 928.~ Tot~!~~i~sionsJk~m 2 ] ~ Prlmlll)' energy 18 net of any electrical -rgy dllpjaoed by CHP generatoro, W applicable. Page 4 of6

52 Heat dam [MJ/m2] Cool dem [MJ/m2] Heat con [kwhlm2] Cool con (kwhlm2] Aux con [kwhlm2] Heat SSEFF Cool SSEER Heat gen SSEFF Cool gen SSEER ST HS HFT CFT = Heating energy demand = Cooling energy demand = Heating energy consumption = Cooling energy consumption = Auxiliary energy consumption =Heating system seasonal efficiency (for notional building, value depends on activity glazing class) = Cooling system seasonal energy efflclency ratio = Heating generator seasonal efficiency = Cooling generator seasonal energy efficiency ratio = System type = Heat source = Heating fuel type =Cooling fuel type Page 5 of6

53 Key Features The BCO can give particular attention to items with specifications that are better than typically expected. Building fabric Element U~otyp Ui-Min Surface where the minimum value occurs* Wall Block 3- Zone 1_W 6 Floor Block 3- Zone 1 S 12 Roof Block 3 - Zone 1 R 5 Windows, roof windows, and rooflights Block 3 - Zone 1 G 4 Personnel doors "No external personnel doors" Vehicle access & similar large doors "No external vehicle access doors" High usage entrance doors "No external high usage entrance doors" U~oryp =Typical individual element U-values [WI(m'K)] U~oM., = Minimum Individual element U-values (WI(m'K)] There might be more than one surface where the minimum U-value occurs. Air Permeability Typical value This building m 3 /(h.m 2 ) at 50 Pa 5 15 Page 6 of6

54 Appendix C DER & TER Worksheets New Build Dwellings

55 DER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 2B Exp. Fl B10 (mid dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.60 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 0 x 10 = 0 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 0 (5) = 0.00 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area 3.50 (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.18 (18) Number of sides on which the dwelling is sheltered 2 (19) Shelter factor 1 [0.075 x (19)] = 0.85 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.15 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system 0.50 (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h (23c) a) If balanced mechanical ventilation with heat recovery (MVHR) (22b)m + (23b) x [1 (23c) 100] (24a) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 3.08 x 1.00 = 3.08 (26) Window x 1.24 = (27) Exposed floor x 0.13 = 9.43 (28b External wall x 0.18 = 2.30 (29a) Party wall x 0.00 = 0.00 (32) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 0.97 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 2.31 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: b) Manufacturer's declared loss factor is not known Hot water storage loss factor from Table 2 (kwh/litre/day) 0.02 (51) Volume factor from Table 2a 3.91 (52) Temperature factor from Table 2b 1.00 (53) Energy lost from water storage (kwh/day) (47) x (51) x (52) x (53) 0.17 (54) Enter (50) or (54) in (55) 0.17 (55) Water storage loss calculated for each month (55) x (41)m (56) Axκ, kj/k Page 1 URN: 2B Exposed Floor version 2 Page 2 URN: 2B Exposed Floor version 2

56 If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c Gains W North 0.77 x 8.66 x x 0.9 x 0.60 x 0.80 = (74) South 0.77 x x x 0.9 x 0.60 x 0.80 = (78) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.50 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate (93) 8. Space heating requirement Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9b. Energy requirements - community heating scheme Fraction of space heat from secondary/supplementary system (table 11) '0' if none 0.00 (301) Fraction of space heat from community system 1 (301) = 1.00 (302) Fraction of community heat from CHP 0.00 (303a) Fraction of community heat from boilers 1.00 (303b) Fraction of total space heat from community CHP (302) x (303a) = 0.00 (304a) Fraction of total space heat from community boilers (302) x (303b) = 1.00 (304b) Factor for control and charging method (Table 4c(3)) for community space heating 1.00 (305) Factor for charging method (Table 4c(3)) for community water heating 1.00 (305a) Distribution loss factor (Table 12c) for community heating system 1.05 (306) Space heating Annual space heating requirement (98) Space heat from CHP (98) x (304a) x (305) x (306) = 0.00 (307a) Space heat from boilers (98) x (304b) x (305) x (306) = (307b) Water heating Page 3 URN: 2B Exposed Floor version 2 Page 4 URN: 2B Exposed Floor version 2

57 Annual water heating requirement (64) Water heat from boilers (64) x (303a) x (305a) x (306) = (310a) Electricity used for heat distribution 0.01 [(307a) (307e) + (310a) (310e)] = (313) Electricity for pumps, fans and electric keep hot (Table 4f) mechanical ventilation fans balanced, extract or positive input from outside (330a) Total electricity for the above, kwh/year (331) Electricity for lighting (Appendix L) (332) Total delivered energy for all uses (307) + (309) + (310) + (312) + (315) + (331) + (332)...(337b) = (338) 10b. Fuel costs - community heating scheme Fuel kwh/year Fuel price Fuel cost /year Space heating from CHP 0.00 x 2.97 x 0.01 = 0.00 (340a) Space heating from boilers x 4.24 x 0.01 = (340b) Water heating from boilers x 4.24 x 0.01 = (342a) Pumps and fans x x 0.01 = (349) Electricity for lighting x x 0.01 = (350) Additional standing charges (351) Total energy cost (340a)...(342e) + (345)...(354) = (355) 11b. SAP rating - community heating scheme Energy cost deflator (Table 12) 0.42 (356) Energy cost factor (ECF) 1.21 (357) SAP value SAP rating (section 13) 83 (358) SAP band B 12b. CO₂ emissions - community heating scheme Energy kwh/year Emission factor Emissions (kg/year) Emissions from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Emissions from other sources (space heating) Efficiency of boilers (367b) CO2 emissions from boilers [(307b)+(310b)] x 100 (367b) = x = (368) Electrical energy for community heat distribution x 0.52 = (372) Total CO2 associated with community systems (373) Total CO2 associated with space and water heating (376) Pumps and fans x 0.52 = (378) Electricity for lighting x 0.52 = (379) Total CO₂, kg/year (376)..(382) = (383) Dwelling CO₂ emission rate (383) (4) = (384) EI value EI rating (section 14) 87 (385) EI band B Energy kwh/year Primary factor Primary energy (kwh/year) Primary Energy from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Primary energy from other sources (space heating) Efficiency of boilers (367b) Primary energy from boilers [(307b)+(310b)] x 100 (367b) = x 1.22 = (368) Electrical energy for community heat distribution x 3.07 = (372) Total primary energy associated with community systems (373) Total primary energy associated with space and water heating (376) Pumps and fans x 3.07 = (378) Electricity for lighting x 3.07 = (379) Primary energy kwh/year (383) Dwelling primary energy rate kwh/m2/year (384) 13b. Primary energy - community heating scheme Page 5 URN: 2B Exposed Floor version 2 Page 6 URN: 2B Exposed Floor version 2

58 TER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 2B Exp. Fl B10 (mid dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.60 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 3 x 10 = 30 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 30 (5) = 0.16 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area 5.00 (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.41 (18) Number of sides on which the dwelling is sheltered 2 (19) Shelter factor 1 [0.075 x (19)] = 0.85 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.35 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system N/A (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h N/A (23c) d) natural ventilation or whole house positive input ventilation from loft (24d) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 3.08 x 1.00 = 3.08 (26) Window x 1.33 = (27) Exposed floor x 0.13 = 9.43 (28b External wall x 0.18 = 3.15 (29a) Party wall x 0.00 = 0.00 (32) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K 8.72 (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 1.10 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 2.31 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: a) If manufacturer's declared loss factor is known (kwh/day) 0.24 (48) Temperature factor from Table 2b 0.54 (49) Energy lost from water storage (kwh/day) (48) x (49) 0.13 (50) Enter (50) or (54) in (55) 0.13 (55) Water storage loss calculated for each month (55) x (41)m (56) If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Axκ, kj/k Page 1 URN: 2B Exposed Floor version 2 Page 2 URN: 2B Exposed Floor version 2

59 Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c Gains W North 0.77 x 6.58 x x 0.9 x 0.63 x 0.70 = (74) South 0.77 x 8.48 x x 0.9 x 0.63 x 0.70 = (78) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.50 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate 8. Space heating requirement (93) Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9a. Energy requirements - individual heating systems including micro-chp Space heating Fraction of space heat from secondary/supplementary system (table 11) 0.00 (201) Fraction of space heat from main system(s) 1 (201) = 1.00 (202) Fraction of space heat from main system (202) Fraction of total space heat from main system 1 (202) x [1 (203)] = 1.00 (204) Fraction of total space heat from main system 2 (202) x (203) = 0.00 (205) Efficiency of main system 1 (%) (206) Space heating fuel (main system 1), kwh/month Water heating Efficiency of water heater Water heating fuel, kwh/month (211)1...5, = (211) (217) (219a) = (219) Annual totals Page 3 URN: 2B Exposed Floor version 2 Page 4 URN: 2B Exposed Floor version 2

60 Space heating fuel main system Water heating fuel Electricity for pumps, fans and electric keep hot (Table 4f) central heating pump or water pump within warm air heating unit (230c) boiler flue fan (230e) Total electricity for the above, kwh/year (231) Electricity for lighting (Appendix L) (232) Total delivered energy for all uses (211)...(221) + (231) + (232)...(237b) = (238) 10a. Fuel costs - individual heating systems including micro-chp Fuel kwh/year Fuel price Fuel cost /year Space heating main system x 3.48 x 0.01 = (240) Water heating x 3.48 x 0.01 = (247) Pumps and fans x x 0.01 = 9.89 (249) Electricity for lighting x x 0.01 = (250) Additional standing charges (251) Total energy cost (240)...(242) + (245)...(254) = (255) 11a. SAP rating - individual heating systems including micro-chp Energy cost deflator (Table 12) 0.42 (256) Energy cost factor (ECF) 1.20 (257) SAP value SAP rating (section 13) 83 (258) SAP band B 12a. CO₂ emissions - individual heating systems including micro-chp Energy kwh/year Emission factor kg CO₂/kWh Emissions kg CO₂/year Space heating main system x 0.22 = (261) Water heating x 0.22 = (264) Space and water heating (261) + (262) + (263) + (264) = (265) Pumps and fans x 0.52 = (267) Electricity for lighting x 0.52 = (268) Total CO₂, kg/year (265)...(271) = (272) Dwelling CO₂ emission rate (272) (4) = (273) EI value EI rating (section 14) 86 (274) EI band B 13a. Primary energy - individual heating systems including micro-chp Energy kwh/year Primary factor Primary Energy kwh/year Space heating main system x 1.22 = (261) Water heating x 1.22 = (264) Space and water heating (261) + (262) + (263) + (264) = (265) Pumps and fans x 3.07 = (267) Electricity for lighting x 3.07 = (268) Primary energy kwh/year (272) Dwelling primary energy rate kwh/m2/year (273) DER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 1B Mid Fl B10 (end dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.60 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 0 x 10 = 0 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 0 (5) = 0.00 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area 3.50 (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.18 (18) Number of sides on which the dwelling is sheltered 2 (19) Shelter factor 1 [0.075 x (19)] = 0.85 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.15 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system 0.50 (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h (23c) a) If balanced mechanical ventilation with heat recovery (MVHR) (22b)m + (23b) x [1 (23c) 100] (24a) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) Page 5 URN: 2B Exposed Floor version 2 Page 1 URN: 1B Mid Floor version 2

61 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 2.48 x 1.00 = 2.48 (26) Window x 1.24 = (27) External wall x 0.18 = 5.05 (29a) Party wall x 0.00 = 0.00 (32) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K 9.60 (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 1.20 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 1.69 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: b) Manufacturer's declared loss factor is not known Hot water storage loss factor from Table 2 (kwh/litre/day) 0.02 (51) Volume factor from Table 2a 3.91 (52) Temperature factor from Table 2b 1.00 (53) Energy lost from water storage (kwh/day) (47) x (51) x (52) x (53) 0.17 (54) Enter (50) or (54) in (55) 0.17 (55) Water storage loss calculated for each month (55) x (41)m (56) If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) Axκ, kj/k (57) Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c Gains W North 0.77 x x x 0.9 x 0.60 x 0.80 = (74) West 0.77 x 8.31 x x 0.9 x 0.60 x 0.80 = (80) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) Page 2 URN: 1B Mid Floor version 2 Page 3 URN: 1B Mid Floor version 2

62 (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.65 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate 8. Space heating requirement (93) Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9b. Energy requirements - community heating scheme Fraction of space heat from secondary/supplementary system (table 11) '0' if none 0.00 (301) Fraction of space heat from community system 1 (301) = 1.00 (302) Fraction of community heat from CHP 0.00 (303a) Fraction of community heat from boilers 1.00 (303b) Fraction of total space heat from community CHP (302) x (303a) = 0.00 (304a) Fraction of total space heat from community boilers (302) x (303b) = 1.00 (304b) Factor for control and charging method (Table 4c(3)) for community space heating 1.00 (305) Factor for charging method (Table 4c(3)) for community water heating 1.00 (305a) Distribution loss factor (Table 12c) for community heating system 1.05 (306) Space heating Annual space heating requirement (98) Space heat from CHP (98) x (304a) x (305) x (306) = 0.00 (307a) Space heat from boilers (98) x (304b) x (305) x (306) = (307b) Water heat from boilers (64) x (303a) x (305a) x (306) = (310a) Electricity used for heat distribution 0.01 [(307a) (307e) + (310a) (310e)] = (313) Electricity for pumps, fans and electric keep hot (Table 4f) mechanical ventilation fans balanced, extract or positive input from outside (330a) Total electricity for the above, kwh/year (331) Electricity for lighting (Appendix L) (332) Total delivered energy for all uses (307) + (309) + (310) + (312) + (315) + (331) + (332)...(337b) = (338) 10b. Fuel costs - community heating scheme Fuel kwh/year Fuel price Fuel cost /year Space heating from CHP 0.00 x 2.97 x 0.01 = 0.00 (340a) Space heating from boilers x 4.24 x 0.01 = (340b) Water heating from boilers x 4.24 x 0.01 = (342a) Pumps and fans x x 0.01 = (349) Electricity for lighting x x 0.01 = (350) Additional standing charges (351) Total energy cost (340a)...(342e) + (345)...(354) = (355) 11b. SAP rating - community heating scheme Energy cost deflator (Table 12) 0.42 (356) Energy cost factor (ECF) 1.36 (357) SAP value SAP rating (section 13) 81 (358) SAP band B 12b. CO₂ emissions - community heating scheme Energy kwh/year Emission factor Emissions (kg/year) Emissions from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Emissions from other sources (space heating) Efficiency of boilers (367b) CO2 emissions from boilers [(307b)+(310b)] x 100 (367b) = x = (368) Electrical energy for community heat distribution x 0.52 = (372) Total CO2 associated with community systems (373) Total CO2 associated with space and water heating (376) Pumps and fans x 0.52 = (378) Electricity for lighting x 0.52 = (379) Total CO₂, kg/year (376)..(382) = (383) Dwelling CO₂ emission rate (383) (4) = (384) EI value EI rating (section 14) 85 (385) EI band B Water heating Annual water heating requirement (64) 13b. Primary energy - community heating scheme Energy kwh/year Primary factor Primary energy (kwh/year) Page 4 URN: 1B Mid Floor version 2 Page 5 URN: 1B Mid Floor version 2

63 Primary Energy from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Primary energy from other sources (space heating) Efficiency of boilers (367b) Primary energy from boilers [(307b)+(310b)] x 100 (367b) = x 1.22 = (368) Electrical energy for community heat distribution x 3.07 = (372) Total primary energy associated with community systems (373) Total primary energy associated with space and water heating (376) Pumps and fans x 3.07 = (378) Electricity for lighting x 3.07 = (379) Primary energy kwh/year (383) Dwelling primary energy rate kwh/m2/year (384) TER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 1B Mid Fl B10 (end dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.60 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 2 x 10 = 20 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 20 (5) = 0.15 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area 5.00 (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.40 (18) Number of sides on which the dwelling is sheltered 2 (19) Shelter factor 1 [0.075 x (19)] = 0.85 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.34 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system N/A (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h N/A (23c) d) natural ventilation or whole house positive input ventilation from loft (24d) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) Page 6 URN: 1B Mid Floor version 2 Page 1 URN: 1B Mid Floor version 2

64 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 2.48 x 1.00 = 2.48 (26) Window x 1.33 = (27) External wall x 0.18 = 7.76 (29a) Party wall x 0.00 = 0.00 (32) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K 5.85 (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 1.08 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 1.69 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: a) If manufacturer's declared loss factor is known (kwh/day) 0.24 (48) Temperature factor from Table 2b 0.54 (49) Energy lost from water storage (kwh/day) (48) x (49) 0.13 (50) Enter (50) or (54) in (55) 0.13 (55) Water storage loss calculated for each month (55) x (41)m (56) If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Primary circuit loss for each month from Table 3 Axκ, kj/k (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c North 0.77 x 6.69 x x 0.9 x 0.63 x 0.70 = (74) West 0.77 x 3.32 x x 0.9 x 0.63 x 0.70 = (80) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) Gains W 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) Page 2 URN: 1B Mid Floor version 2 Page 3 URN: 1B Mid Floor version 2

65 (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.65 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate 8. Space heating requirement Utilisation factor for gains, ƞm (93) (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9a. Energy requirements - individual heating systems including micro-chp Space heating Fraction of space heat from secondary/supplementary system (table 11) 0.00 (201) Fraction of space heat from main system(s) 1 (201) = 1.00 (202) Fraction of space heat from main system (202) Fraction of total space heat from main system 1 (202) x [1 (203)] = 1.00 (204) Fraction of total space heat from main system 2 (202) x (203) = 0.00 (205) Efficiency of main system 1 (%) (206) Space heating fuel (main system 1), kwh/month Water heating Efficiency of water heater Water heating fuel, kwh/month (211)1...5, = (211) (217) (219a) = (219) Annual totals Space heating fuel main system Water heating fuel Electricity for pumps, fans and electric keep hot (Table 4f) central heating pump or water pump within warm air heating unit (230c) boiler flue fan (230e) Total electricity for the above, kwh/year (231) Electricity for lighting (Appendix L) (232) Total delivered energy for all uses (211)...(221) + (231) + (232)...(237b) = (238) 10a. Fuel costs - individual heating systems including micro-chp Fuel kwh/year Fuel price Fuel cost /year Space heating main system x 3.48 x 0.01 = (240) Water heating x 3.48 x 0.01 = (247) Pumps and fans x x 0.01 = 9.89 (249) Electricity for lighting x x 0.01 = (250) Additional standing charges (251) Total energy cost (240)...(242) + (245)...(254) = (255) 11a. SAP rating - individual heating systems including micro-chp Energy cost deflator (Table 12) 0.42 (256) Energy cost factor (ECF) 1.29 (257) SAP value SAP rating (section 13) 82 (258) SAP band B 12a. CO₂ emissions - individual heating systems including micro-chp Energy kwh/year Emission factor kg CO₂/kWh Emissions kg CO₂/year Space heating main system x 0.22 = (261) Water heating x 0.22 = (264) Space and water heating (261) + (262) + (263) + (264) = (265) Pumps and fans x 0.52 = (267) Electricity for lighting x 0.52 = (268) Total CO₂, kg/year (265)...(271) = (272) Dwelling CO₂ emission rate (272) (4) = (273) EI value EI rating (section 14) 86 (274) EI band B 13a. Primary energy - individual heating systems including micro-chp Energy kwh/year Primary factor Primary Energy kwh/year Space heating main system x 1.22 = (261) Water heating x 1.22 = (264) Space and water heating (261) + (262) + (263) + (264) = (265) Pumps and fans x 3.07 = (267) Electricity for lighting x 3.07 = (268) Primary energy kwh/year (272) Dwelling primary energy rate kwh/m2/year (273) Page 4 URN: 1B Mid Floor version 2 Page 5 URN: 1B Mid Floor version 2

66 DER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 1B Mid Fl B10 (mid dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.60 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 0 x 10 = 0 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 0 (5) = 0.00 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area 3.50 (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.18 (18) Number of sides on which the dwelling is sheltered 2 (19) Shelter factor 1 [0.075 x (19)] = 0.85 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.15 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system 0.50 (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h (23c) a) If balanced mechanical ventilation with heat recovery (MVHR) (22b)m + (23b) x [1 (23c) 100] (24a) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 3.08 x 1.00 = 3.08 (26) Window x 1.24 = (27) External wall 9.19 x 0.18 = 1.65 (29a) Party wall x 0.00 = 0.00 (32) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K 3.93 (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 0.73 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 1.77 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: b) Manufacturer's declared loss factor is not known Hot water storage loss factor from Table 2 (kwh/litre/day) 0.02 (51) Volume factor from Table 2a 3.91 (52) Temperature factor from Table 2b 1.00 (53) Energy lost from water storage (kwh/day) (47) x (51) x (52) x (53) 0.17 (54) Enter (50) or (54) in (55) 0.17 (55) Water storage loss calculated for each month (55) x (41)m (56) If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) Axκ, kj/k Page 1 URN: 1B Mid Floor mid version 2 Page 2 URN: 1B Mid Floor mid version 2

67 (57) Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c Gains W North 0.77 x 5.58 x x 0.9 x 0.60 x 0.80 = (74) South 0.77 x 8.36 x x 0.9 x 0.60 x 0.80 = (78) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.67 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate 8. Space heating requirement (93) Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) 9.34 (99) 9b. Energy requirements - community heating scheme Fraction of space heat from secondary/supplementary system (table 11) '0' if none 0.00 (301) Fraction of space heat from community system 1 (301) = 1.00 (302) Fraction of community heat from CHP 0.00 (303a) Fraction of community heat from boilers 1.00 (303b) Fraction of total space heat from community CHP (302) x (303a) = 0.00 (304a) Fraction of total space heat from community boilers (302) x (303b) = 1.00 (304b) Factor for control and charging method (Table 4c(3)) for community space heating 1.00 (305) Factor for charging method (Table 4c(3)) for community water heating 1.00 (305a) Distribution loss factor (Table 12c) for community heating system 1.05 (306) Space heating Annual space heating requirement (98) Space heat from CHP (98) x (304a) x (305) x (306) = 0.00 (307a) Space heat from boilers (98) x (304b) x (305) x (306) = (307b) Water heating Annual water heating requirement (64) Page 3 URN: 1B Mid Floor mid version 2 Page 4 URN: 1B Mid Floor mid version 2

68 Water heat from boilers (64) x (303a) x (305a) x (306) = (310a) Electricity used for heat distribution 0.01 [(307a) (307e) + (310a) (310e)] = (313) Electricity for pumps, fans and electric keep hot (Table 4f) mechanical ventilation fans balanced, extract or positive input from outside (330a) Total electricity for the above, kwh/year (331) Electricity for lighting (Appendix L) (332) Total delivered energy for all uses (307) + (309) + (310) + (312) + (315) + (331) + (332)...(337b) = (338) 10b. Fuel costs - community heating scheme Fuel kwh/year Fuel price Fuel cost /year Space heating from CHP 0.00 x 2.97 x 0.01 = 0.00 (340a) Space heating from boilers x 4.24 x 0.01 = (340b) Water heating from boilers x 4.24 x 0.01 = (342a) Pumps and fans x x 0.01 = (349) Electricity for lighting x x 0.01 = (350) Additional standing charges (351) Total energy cost (340a)...(342e) + (345)...(354) = (355) 11b. SAP rating - community heating scheme Energy cost deflator (Table 12) 0.42 (356) Energy cost factor (ECF) 1.12 (357) SAP value SAP rating (section 13) 84 (358) SAP band B 12b. CO₂ emissions - community heating scheme Energy kwh/year Emission factor Emissions (kg/year) Emissions from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Emissions from other sources (space heating) Efficiency of boilers (367b) CO2 emissions from boilers [(307b)+(310b)] x 100 (367b) = x = (368) Electrical energy for community heat distribution x 0.52 = (372) Total CO2 associated with community systems (373) Total CO2 associated with space and water heating (376) Pumps and fans x 0.52 = (378) Electricity for lighting x 0.52 = (379) Total CO₂, kg/year (376)..(382) = (383) Dwelling CO₂ emission rate (383) (4) = (384) EI value EI rating (section 14) 90 (385) EI band B Primary Energy from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Primary energy from other sources (space heating) Efficiency of boilers (367b) Primary energy from boilers [(307b)+(310b)] x 100 (367b) = x 1.22 = (368) Electrical energy for community heat distribution x 3.07 = (372) Total primary energy associated with community systems (373) Total primary energy associated with space and water heating (376) Pumps and fans x 3.07 = (378) Electricity for lighting x 3.07 = (379) Primary energy kwh/year (383) Dwelling primary energy rate kwh/m2/year (384) 13b. Primary energy - community heating scheme Energy kwh/year Primary factor Primary energy (kwh/year) Page 5 URN: 1B Mid Floor mid version 2 Page 6 URN: 1B Mid Floor mid version 2

69 TER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 1B Mid Fl B10 (mid dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.60 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 2 x 10 = 20 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 20 (5) = 0.15 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area 5.00 (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.40 (18) Number of sides on which the dwelling is sheltered 2 (19) Shelter factor 1 [0.075 x (19)] = 0.85 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.34 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system N/A (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h N/A (23c) d) natural ventilation or whole house positive input ventilation from loft (24d) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 3.08 x 1.00 = 3.08 (26) Window x 1.33 = (27) External wall x 0.18 = 2.35 (29a) Party wall x 0.00 = 0.00 (32) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K 1.31 (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 0.87 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 1.77 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: a) If manufacturer's declared loss factor is known (kwh/day) 0.24 (48) Temperature factor from Table 2b 0.54 (49) Energy lost from water storage (kwh/day) (48) x (49) 0.13 (50) Enter (50) or (54) in (55) 0.13 (55) Water storage loss calculated for each month (55) x (41)m (56) If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Primary circuit loss for each month from Table 3 Axκ, kj/k Page 1 URN: 1B Mid Floor mid version 2 Page 2 URN: 1B Mid Floor mid version 2

70 (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c North 0.77 x 4.04 x x 0.9 x 0.63 x 0.70 = (74) South 0.77 x 6.06 x x 0.9 x 0.63 x 0.70 = (78) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) Gains W 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.67 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate 8. Space heating requirement Utilisation factor for gains, ƞm (93) (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9a. Energy requirements - individual heating systems including micro-chp Space heating Fraction of space heat from secondary/supplementary system (table 11) 0.00 (201) Fraction of space heat from main system(s) 1 (201) = 1.00 (202) Fraction of space heat from main system (202) Fraction of total space heat from main system 1 (202) x [1 (203)] = 1.00 (204) Fraction of total space heat from main system 2 (202) x (203) = 0.00 (205) Efficiency of main system 1 (%) (206) Space heating fuel (main system 1), kwh/month Water heating Efficiency of water heater Water heating fuel, kwh/month (211)1...5, = (211) (217) (219a) = (219) Annual totals Space heating fuel main system Page 3 URN: 1B Mid Floor mid version 2 Page 4 URN: 1B Mid Floor mid version 2

71 Water heating fuel Electricity for pumps, fans and electric keep hot (Table 4f) central heating pump or water pump within warm air heating unit (230c) boiler flue fan (230e) Total electricity for the above, kwh/year (231) Electricity for lighting (Appendix L) (232) Total delivered energy for all uses (211)...(221) + (231) + (232)...(237b) = (238) 10a. Fuel costs - individual heating systems including micro-chp Fuel kwh/year Fuel price Fuel cost /year Space heating main system x 3.48 x 0.01 = (240) Water heating x 3.48 x 0.01 = (247) Pumps and fans x x 0.01 = 9.89 (249) Electricity for lighting x x 0.01 = (250) Additional standing charges (251) Total energy cost (240)...(242) + (245)...(254) = (255) 11a. SAP rating - individual heating systems including micro-chp Energy cost deflator (Table 12) 0.42 (256) Energy cost factor (ECF) 1.14 (257) SAP value SAP rating (section 13) 84 (258) SAP band B 12a. CO₂ emissions - individual heating systems including micro-chp Energy kwh/year Emission factor kg CO₂/kWh Emissions kg CO₂/year Space heating main system x 0.22 = (261) Water heating x 0.22 = (264) Space and water heating (261) + (262) + (263) + (264) = (265) Pumps and fans x 0.52 = (267) Electricity for lighting x 0.52 = (268) Total CO₂, kg/year (265)...(271) = (272) Dwelling CO₂ emission rate (272) (4) = (273) EI value EI rating (section 14) 89 (274) EI band B 13a. Primary energy - individual heating systems including micro-chp Energy kwh/year Primary factor Primary Energy kwh/year Space heating main system x 1.22 = (261) Water heating x 1.22 = (264) Space and water heating (261) + (262) + (263) + (264) = (265) Pumps and fans x 3.07 = (267) Electricity for lighting x 3.07 = (268) Primary energy kwh/year (272) Dwelling primary energy rate kwh/m2/year (273) DER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 3B Top Fl B10 (end dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.60 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 0 x 10 = 0 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 0 (5) = 0.00 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area 3.50 (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.18 (18) Number of sides on which the dwelling is sheltered 1 (19) Shelter factor 1 [0.075 x (19)] = 0.93 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.16 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system 0.50 (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h (23c) a) If balanced mechanical ventilation with heat recovery (MVHR) (22b)m + (23b) x [1 (23c) 100] (24a) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) Page 5 URN: 1B Mid Floor mid version 2 Page 1 URN: 3B Top Floor version 2

72 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 2.48 x 1.00 = 2.48 (26) Window x 1.24 = (27) External wall x 0.18 = 7.80 (29a) Party wall x 0.00 = 0.00 (32) Roof x 0.10 = (30) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 1.27 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 2.75 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: b) Manufacturer's declared loss factor is not known Hot water storage loss factor from Table 2 (kwh/litre/day) 0.02 (51) Volume factor from Table 2a 3.91 (52) Temperature factor from Table 2b 1.00 (53) Energy lost from water storage (kwh/day) (47) x (51) x (52) x (53) 0.17 (54) Enter (50) or (54) in (55) 0.17 (55) Water storage loss calculated for each month (55) x (41)m (56) Axκ, kj/k If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c Gains W North 0.77 x x x 0.9 x 0.42 x 0.80 = (74) West 0.77 x x x 0.9 x 0.42 x 0.80 = (80) South 0.77 x 7.69 x x 0.9 x 0.42 x 0.80 = (78) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Page 2 URN: 3B Top Floor version 2 Page 3 URN: 3B Top Floor version 2

73 Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.55 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate (93) 8. Space heating requirement Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9b. Energy requirements - community heating scheme Fraction of space heat from secondary/supplementary system (table 11) '0' if none 0.00 (301) Fraction of space heat from community system 1 (301) = 1.00 (302) Fraction of community heat from CHP 0.00 (303a) Fraction of community heat from boilers 1.00 (303b) Fraction of total space heat from community CHP (302) x (303a) = 0.00 (304a) Fraction of total space heat from community boilers (302) x (303b) = 1.00 (304b) Factor for control and charging method (Table 4c(3)) for community space heating 1.00 (305) Factor for charging method (Table 4c(3)) for community water heating 1.00 (305a) Distribution loss factor (Table 12c) for community heating system 1.05 (306) Space heating Annual space heating requirement (98) Space heat from CHP (98) x (304a) x (305) x (306) = 0.00 (307a) Space heat from boilers (98) x (304b) x (305) x (306) = (307b) Water heating Annual water heating requirement (64) Water heat from boilers (64) x (303a) x (305a) x (306) = (310a) Electricity used for heat distribution 0.01 [(307a) (307e) + (310a) (310e)] = (313) Electricity for pumps, fans and electric keep hot (Table 4f) mechanical ventilation fans balanced, extract or positive input from outside (330a) Total electricity for the above, kwh/year (331) Electricity for lighting (Appendix L) (332) Total delivered energy for all uses (307) + (309) + (310) + (312) + (315) + (331) + (332)...(337b) = (338) 10b. Fuel costs - community heating scheme Fuel kwh/year Fuel price Fuel cost /year Space heating from CHP 0.00 x 2.97 x 0.01 = 0.00 (340a) Space heating from boilers x 4.24 x 0.01 = (340b) Water heating from boilers x 4.24 x 0.01 = (342a) Pumps and fans x x 0.01 = (349) Electricity for lighting x x 0.01 = (350) Additional standing charges (351) Total energy cost (340a)...(342e) + (345)...(354) = (355) 11b. SAP rating - community heating scheme Energy cost deflator (Table 12) 0.42 (356) Energy cost factor (ECF) 1.41 (357) SAP value SAP rating (section 13) 80 (358) SAP band C 12b. CO₂ emissions - community heating scheme Energy kwh/year Emission factor Emissions (kg/year) Emissions from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Emissions from other sources (space heating) Efficiency of boilers (367b) CO2 emissions from boilers [(307b)+(310b)] x 100 (367b) = x = (368) Electrical energy for community heat distribution x 0.52 = (372) Total CO2 associated with community systems (373) Total CO2 associated with space and water heating (376) Pumps and fans x 0.52 = (378) Electricity for lighting x 0.52 = (379) Total CO₂, kg/year (376)..(382) = (383) Dwelling CO₂ emission rate (383) (4) = (384) EI value EI rating (section 14) 81 (385) EI band B 13b. Primary energy - community heating scheme Page 4 URN: 3B Top Floor version 2 Page 5 URN: 3B Top Floor version 2

74 Energy kwh/year Primary factor Primary energy (kwh/year) Primary Energy from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Primary energy from other sources (space heating) Efficiency of boilers (367b) Primary energy from boilers [(307b)+(310b)] x 100 (367b) = x 1.22 = (368) Electrical energy for community heat distribution x 3.07 = (372) Total primary energy associated with community systems (373) Total primary energy associated with space and water heating (376) Pumps and fans x 3.07 = (378) Electricity for lighting x 3.07 = (379) Primary energy kwh/year (383) Dwelling primary energy rate kwh/m2/year (384) TER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 3B Top Fl B10 (end dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.60 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 4 x 10 = 40 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 40 (5) = 0.15 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area 5.00 (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.40 (18) Number of sides on which the dwelling is sheltered 1 (19) Shelter factor 1 [0.075 x (19)] = 0.93 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.37 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system N/A (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h N/A (23c) d) natural ventilation or whole house positive input ventilation from loft (24d) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) Page 6 URN: 3B Top Floor version 2 Page 1 URN: 3B Top Floor version 2

75 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 2.48 x 1.00 = 2.48 (26) Window x 1.33 = (27) External wall x 0.18 = (29a) Party wall x 0.00 = 0.00 (32) Roof x 0.13 = (30) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 1.30 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 2.75 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: a) If manufacturer's declared loss factor is known (kwh/day) 0.24 (48) Temperature factor from Table 2b 0.54 (49) Energy lost from water storage (kwh/day) (48) x (49) 0.13 (50) Enter (50) or (54) in (55) 0.13 (55) Water storage loss calculated for each month (55) x (41)m (56) If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Axκ, kj/k Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c Gains W North 0.77 x 6.99 x x 0.9 x 0.63 x 0.70 = (74) West 0.77 x x x 0.9 x 0.63 x 0.70 = (80) South 0.77 x 4.03 x x 0.9 x 0.63 x 0.70 = (78) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) Page 2 URN: 3B Top Floor version 2 Page 3 URN: 3B Top Floor version 2

76 (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.55 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate 8. Space heating requirement (93) Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9a. Energy requirements - individual heating systems including micro-chp Space heating Fraction of space heat from secondary/supplementary system (table 11) 0.00 (201) Fraction of space heat from main system(s) 1 (201) = 1.00 (202) Fraction of space heat from main system (202) Fraction of total space heat from main system 1 (202) x [1 (203)] = 1.00 (204) Fraction of total space heat from main system 2 (202) x (203) = 0.00 (205) Efficiency of main system 1 (%) (206) Space heating fuel (main system 1), kwh/month Water heating Efficiency of water heater (211)1...5, = (211) (217) Water heating fuel, kwh/month (219a) = (219) Annual totals Space heating fuel main system Water heating fuel Electricity for pumps, fans and electric keep hot (Table 4f) central heating pump or water pump within warm air heating unit (230c) boiler flue fan (230e) Total electricity for the above, kwh/year (231) Electricity for lighting (Appendix L) (232) Total delivered energy for all uses (211)...(221) + (231) + (232)...(237b) = (238) 10a. Fuel costs - individual heating systems including micro-chp Fuel kwh/year Fuel price Fuel cost /year Space heating main system x 3.48 x 0.01 = (240) Water heating x 3.48 x 0.01 = (247) Pumps and fans x x 0.01 = 9.89 (249) Electricity for lighting x x 0.01 = (250) Additional standing charges (251) Total energy cost (240)...(242) + (245)...(254) = (255) 11a. SAP rating - individual heating systems including micro-chp Energy cost deflator (Table 12) 0.42 (256) Energy cost factor (ECF) 1.29 (257) SAP value SAP rating (section 13) 82 (258) SAP band B 12a. CO₂ emissions - individual heating systems including micro-chp Energy kwh/year Emission factor kg CO₂/kWh Emissions kg CO₂/year Space heating main system x 0.22 = (261) Water heating x 0.22 = (264) Space and water heating (261) + (262) + (263) + (264) = (265) Pumps and fans x 0.52 = (267) Electricity for lighting x 0.52 = (268) Total CO₂, kg/year (265)...(271) = (272) Dwelling CO₂ emission rate (272) (4) = (273) EI value EI rating (section 14) 83 (274) EI band B 13a. Primary energy - individual heating systems including micro-chp Energy kwh/year Primary factor Primary Energy kwh/year Space heating main system x 1.22 = (261) Water heating x 1.22 = (264) Space and water heating (261) + (262) + (263) + (264) = (265) Pumps and fans x 3.07 = (267) Electricity for lighting x 3.07 = (268) Primary energy kwh/year (272) Page 4 URN: 3B Top Floor version 2 Page 5 URN: 3B Top Floor version 2

77 Dwelling primary energy rate kwh/m2/year (273) DER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 3B Top Fl B10 (mid dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.60 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 0 x 10 = 0 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 0 (5) = 0.00 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area 3.50 (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.18 (18) Number of sides on which the dwelling is sheltered 2 (19) Shelter factor 1 [0.075 x (19)] = 0.85 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.15 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system 0.50 (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h (23c) a) If balanced mechanical ventilation with heat recovery (MVHR) (22b)m + (23b) x [1 (23c) 100] (24a) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) Page 6 URN: 3B Top Floor version 2 Page 1 URN: 3B Top Floor mid version 2

78 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 2.95 x 1.00 = 2.95 (26) Window x 1.24 = (27) External wall x 0.18 = 3.33 (29a) Party wall x 0.00 = 0.00 (32) Roof x 0.10 = 8.90 (30) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 1.01 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 2.61 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: b) Manufacturer's declared loss factor is not known Hot water storage loss factor from Table 2 (kwh/litre/day) 0.02 (51) Volume factor from Table 2a 3.91 (52) Temperature factor from Table 2b 1.00 (53) Energy lost from water storage (kwh/day) (47) x (51) x (52) x (53) 0.17 (54) Enter (50) or (54) in (55) 0.17 (55) Water storage loss calculated for each month (55) x (41)m (56) Axκ, kj/k If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c Gains W North 0.77 x x x 0.9 x 0.42 x 0.80 = (74) South 0.77 x x x 0.9 x 0.42 x 0.80 = (78) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Page 2 URN: 3B Top Floor mid version 2 Page 3 URN: 3B Top Floor mid version 2

79 Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.46 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate (93) 8. Space heating requirement Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9b. Energy requirements - community heating scheme Fraction of space heat from secondary/supplementary system (table 11) '0' if none 0.00 (301) Fraction of space heat from community system 1 (301) = 1.00 (302) Fraction of community heat from CHP 0.00 (303a) Fraction of community heat from boilers 1.00 (303b) Fraction of total space heat from community CHP (302) x (303a) = 0.00 (304a) Fraction of total space heat from community boilers (302) x (303b) = 1.00 (304b) Factor for control and charging method (Table 4c(3)) for community space heating 1.00 (305) Factor for charging method (Table 4c(3)) for community water heating 1.00 (305a) Distribution loss factor (Table 12c) for community heating system 1.05 (306) Space heating Annual space heating requirement (98) Space heat from CHP (98) x (304a) x (305) x (306) = 0.00 (307a) Space heat from boilers (98) x (304b) x (305) x (306) = (307b) Annual water heating requirement (64) Water heat from boilers (64) x (303a) x (305a) x (306) = (310a) Electricity used for heat distribution 0.01 [(307a) (307e) + (310a) (310e)] = (313) Electricity for pumps, fans and electric keep hot (Table 4f) mechanical ventilation fans balanced, extract or positive input from outside (330a) Total electricity for the above, kwh/year (331) Electricity for lighting (Appendix L) (332) Total delivered energy for all uses (307) + (309) + (310) + (312) + (315) + (331) + (332)...(337b) = (338) 10b. Fuel costs - community heating scheme Fuel kwh/year Fuel price Fuel cost /year Space heating from CHP 0.00 x 2.97 x 0.01 = 0.00 (340a) Space heating from boilers x 4.24 x 0.01 = (340b) Water heating from boilers x 4.24 x 0.01 = (342a) Pumps and fans x x 0.01 = (349) Electricity for lighting x x 0.01 = (350) Additional standing charges (351) Total energy cost (340a)...(342e) + (345)...(354) = (355) 11b. SAP rating - community heating scheme Energy cost deflator (Table 12) 0.42 (356) Energy cost factor (ECF) 1.27 (357) SAP value SAP rating (section 13) 82 (358) SAP band B 12b. CO₂ emissions - community heating scheme Energy kwh/year Emission factor Emissions (kg/year) Emissions from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Emissions from other sources (space heating) Efficiency of boilers (367b) CO2 emissions from boilers [(307b)+(310b)] x 100 (367b) = x = (368) Electrical energy for community heat distribution x 0.52 = (372) Total CO2 associated with community systems (373) Total CO2 associated with space and water heating (376) Pumps and fans x 0.52 = (378) Electricity for lighting x 0.52 = (379) Total CO₂, kg/year (376)..(382) = (383) Dwelling CO₂ emission rate (383) (4) = (384) EI value EI rating (section 14) 85 (385) EI band B Water heating 13b. Primary energy - community heating scheme Page 4 URN: 3B Top Floor mid version 2 Page 5 URN: 3B Top Floor mid version 2

80 Energy kwh/year Primary factor Primary energy (kwh/year) Primary Energy from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Primary energy from other sources (space heating) Efficiency of boilers (367b) Primary energy from boilers [(307b)+(310b)] x 100 (367b) = x 1.22 = (368) Electrical energy for community heat distribution x 3.07 = (372) Total primary energy associated with community systems (373) Total primary energy associated with space and water heating (376) Pumps and fans x 3.07 = (378) Electricity for lighting x 3.07 = (379) Primary energy kwh/year (383) Dwelling primary energy rate kwh/m2/year (384) TER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 3B Top Fl B10 (mid dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.60 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 3 x 10 = 30 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 30 (5) = 0.13 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area 5.00 (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.38 (18) Number of sides on which the dwelling is sheltered 2 (19) Shelter factor 1 [0.075 x (19)] = 0.85 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.32 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system N/A (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h N/A (23c) d) natural ventilation or whole house positive input ventilation from loft (24d) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) Page 6 URN: 3B Top Floor mid version 2 Page 1 URN: 3B Top Floor mid version 2

81 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 2.95 x 1.00 = 2.95 (26) Window x 1.33 = (27) External wall x 0.18 = 4.38 (29a) Party wall x 0.00 = 0.00 (32) Roof x 0.13 = (30) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 1.17 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 2.61 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: a) If manufacturer's declared loss factor is known (kwh/day) 0.24 (48) Temperature factor from Table 2b 0.54 (49) Energy lost from water storage (kwh/day) (48) x (49) 0.13 (50) Enter (50) or (54) in (55) 0.13 (55) Water storage loss calculated for each month (55) x (41)m (56) If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Axκ, kj/k Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c Gains W North 0.77 x 8.58 x x 0.9 x 0.63 x 0.70 = (74) South 0.77 x x x 0.9 x 0.63 x 0.70 = (78) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) (86) Page 2 URN: 3B Top Floor mid version 2 Page 3 URN: 3B Top Floor mid version 2

82 Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.46 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate 8. Space heating requirement (93) Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9a. Energy requirements - individual heating systems including micro-chp Space heating Fraction of space heat from secondary/supplementary system (table 11) 0.00 (201) Fraction of space heat from main system(s) 1 (201) = 1.00 (202) Fraction of space heat from main system (202) Fraction of total space heat from main system 1 (202) x [1 (203)] = 1.00 (204) Fraction of total space heat from main system 2 (202) x (203) = 0.00 (205) Efficiency of main system 1 (%) (206) Space heating fuel (main system 1), kwh/month Water heating Efficiency of water heater Water heating fuel, kwh/month (211)1...5, = (211) (217) (219a) = (219) Annual totals Space heating fuel main system Water heating fuel Electricity for pumps, fans and electric keep hot (Table 4f) central heating pump or water pump within warm air heating unit (230c) boiler flue fan (230e) Total electricity for the above, kwh/year (231) Electricity for lighting (Appendix L) (232) Total delivered energy for all uses (211)...(221) + (231) + (232)...(237b) = (238) 10a. Fuel costs - individual heating systems including micro-chp Fuel kwh/year Fuel price Fuel cost /year Space heating main system x 3.48 x 0.01 = (240) Water heating x 3.48 x 0.01 = (247) Pumps and fans x x 0.01 = 9.89 (249) Electricity for lighting x x 0.01 = (250) Additional standing charges (251) Total energy cost (240)...(242) + (245)...(254) = (255) 11a. SAP rating - individual heating systems including micro-chp Energy cost deflator (Table 12) 0.42 (256) Energy cost factor (ECF) 1.20 (257) SAP value SAP rating (section 13) 83 (258) SAP band B 12a. CO₂ emissions - individual heating systems including micro-chp Energy kwh/year Emission factor kg CO₂/kWh Emissions kg CO₂/year Space heating main system x 0.22 = (261) Water heating x 0.22 = (264) Space and water heating (261) + (262) + (263) + (264) = (265) Pumps and fans x 0.52 = (267) Electricity for lighting x 0.52 = (268) Total CO₂, kg/year (265)...(271) = (272) Dwelling CO₂ emission rate (272) (4) = (273) EI value EI rating (section 14) 85 (274) EI band B 13a. Primary energy - individual heating systems including micro-chp Energy kwh/year Primary factor Primary Energy kwh/year Space heating main system x 1.22 = (261) Water heating x 1.22 = (264) Space and water heating (261) + (262) + (263) + (264) = (265) Pumps and fans x 3.07 = (267) Electricity for lighting x 3.07 = (268) Primary energy kwh/year (272) Dwelling primary energy rate kwh/m2/year (273) Page 4 URN: 3B Top Floor mid version 2 Page 5 URN: 3B Top Floor mid version 2

83 DER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 2B Exp. Fl B11 (end dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.70 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 0 x 10 = 0 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 0 (5) = 0.00 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area 3.50 (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.18 (18) Number of sides on which the dwelling is sheltered 2 (19) Shelter factor 1 [0.075 x (19)] = 0.85 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.15 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system 0.50 (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h (23c) a) If balanced mechanical ventilation with heat recovery (MVHR) (22b)m + (23b) x [1 (23c) 100] (24a) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 2.48 x 1.00 = 2.48 (26) Window x 1.24 = (27) Exposed floor x 0.13 = 9.18 (28b External wall x 0.18 = 7.44 (29a) Party wall x 0.00 = 0.00 (32) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 1.19 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 2.26 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: b) Manufacturer's declared loss factor is not known Hot water storage loss factor from Table 2 (kwh/litre/day) 0.02 (51) Volume factor from Table 2a 3.91 (52) Temperature factor from Table 2b 1.00 (53) Energy lost from water storage (kwh/day) (47) x (51) x (52) x (53) 0.17 (54) Enter (50) or (54) in (55) 0.17 (55) Water storage loss calculated for each month (55) x (41)m (56) Axκ, kj/k Page 1 URN: Building 11 2B End version 2 Page 2 URN: Building 11 2B End version 2

84 If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c Gains W East 0.77 x 8.98 x x 0.9 x 0.50 x 0.80 = (76) West 0.77 x 5.96 x x 0.9 x 0.50 x 0.80 = (80) North 0.77 x 8.98 x x 0.9 x 0.50 x 0.80 = (74) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.54 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate (93) 8. Space heating requirement Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9b. Energy requirements - community heating scheme Fraction of space heat from secondary/supplementary system (table 11) '0' if none 0.00 (301) Fraction of space heat from community system 1 (301) = 1.00 (302) Fraction of community heat from CHP 0.00 (303a) Fraction of community heat from boilers 1.00 (303b) Fraction of total space heat from community CHP (302) x (303a) = 0.00 (304a) Fraction of total space heat from community boilers (302) x (303b) = 1.00 (304b) Factor for control and charging method (Table 4c(3)) for community space heating 1.00 (305) Factor for charging method (Table 4c(3)) for community water heating 1.00 (305a) Distribution loss factor (Table 12c) for community heating system 1.05 (306) Space heating Annual space heating requirement (98) Space heat from CHP (98) x (304a) x (305) x (306) = 0.00 (307a) Space heat from boilers (98) x (304b) x (305) x (306) = (307b) Page 3 URN: Building 11 2B End version 2 Page 4 URN: Building 11 2B End version 2

85 Water heating Annual water heating requirement (64) Water heat from boilers (64) x (303a) x (305a) x (306) = (310a) Electricity used for heat distribution 0.01 [(307a) (307e) + (310a) (310e)] = (313) Electricity for pumps, fans and electric keep hot (Table 4f) mechanical ventilation fans balanced, extract or positive input from outside (330a) Total electricity for the above, kwh/year (331) Electricity for lighting (Appendix L) (332) Total delivered energy for all uses (307) + (309) + (310) + (312) + (315) + (331) + (332)...(337b) = (338) 10b. Fuel costs - community heating scheme Fuel kwh/year Fuel price Fuel cost /year Space heating from CHP 0.00 x 2.97 x 0.01 = 0.00 (340a) Space heating from boilers x 4.24 x 0.01 = (340b) Water heating from boilers x 4.24 x 0.01 = (342a) Pumps and fans x x 0.01 = (349) Electricity for lighting x x 0.01 = (350) Additional standing charges (351) Total energy cost (340a)...(342e) + (345)...(354) = (355) 11b. SAP rating - community heating scheme Energy cost deflator (Table 12) 0.42 (356) Energy cost factor (ECF) 1.41 (357) SAP value SAP rating (section 13) 80 (358) SAP band C 12b. CO₂ emissions - community heating scheme Energy kwh/year Emission factor Emissions (kg/year) Emissions from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Emissions from other sources (space heating) Efficiency of boilers (367b) CO2 emissions from boilers [(307b)+(310b)] x 100 (367b) = x = (368) Electrical energy for community heat distribution x 0.52 = (372) Total CO2 associated with community systems (373) Total CO2 associated with space and water heating (376) Pumps and fans x 0.52 = (378) Electricity for lighting x 0.52 = (379) Total CO₂, kg/year (376)..(382) = (383) Dwelling CO₂ emission rate (383) (4) = (384) EI value EI rating (section 14) 83 (385) EI band B Energy kwh/year Primary factor Primary energy (kwh/year) Primary Energy from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Primary energy from other sources (space heating) Efficiency of boilers (367b) Primary energy from boilers [(307b)+(310b)] x 100 (367b) = x 1.22 = (368) Electrical energy for community heat distribution x 3.07 = (372) Total primary energy associated with community systems (373) Total primary energy associated with space and water heating (376) Pumps and fans x 3.07 = (378) Electricity for lighting x 3.07 = (379) Primary energy kwh/year (383) Dwelling primary energy rate kwh/m2/year (384) 13b. Primary energy - community heating scheme Page 5 URN: Building 11 2B End version 2 Page 6 URN: Building 11 2B End version 2

86 TER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 2B Exp. Fl B11 (end dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.70 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 3 x 10 = 30 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 30 (5) = 0.16 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area 5.00 (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.41 (18) Number of sides on which the dwelling is sheltered 2 (19) Shelter factor 1 [0.075 x (19)] = 0.85 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.35 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system N/A (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h N/A (23c) d) natural ventilation or whole house positive input ventilation from loft (24d) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 2.48 x 1.00 = 2.48 (26) Window x 1.33 = (27) Exposed floor x 0.13 = 9.18 (28b External wall x 0.18 = 9.01 (29a) Party wall x 0.00 = 0.00 (32) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 1.29 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 2.26 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: a) If manufacturer's declared loss factor is known (kwh/day) 0.24 (48) Temperature factor from Table 2b 0.54 (49) Energy lost from water storage (kwh/day) (48) x (49) 0.13 (50) Enter (50) or (54) in (55) 0.13 (55) Water storage loss calculated for each month (55) x (41)m (56) If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Axκ, kj/k Page 1 URN: Building 11 2B End version 2 Page 2 URN: Building 11 2B End version 2

87 Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c Gains W East 0.77 x 5.70 x x 0.9 x 0.63 x 0.70 = (76) West 0.77 x 3.78 x x 0.9 x 0.63 x 0.70 = (80) North 0.77 x 5.70 x x 0.9 x 0.63 x 0.70 = (74) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.54 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate 8. Space heating requirement (93) Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9a. Energy requirements - individual heating systems including micro-chp Space heating Fraction of space heat from secondary/supplementary system (table 11) 0.00 (201) Fraction of space heat from main system(s) 1 (201) = 1.00 (202) Fraction of space heat from main system (202) Fraction of total space heat from main system 1 (202) x [1 (203)] = 1.00 (204) Fraction of total space heat from main system 2 (202) x (203) = 0.00 (205) Efficiency of main system 1 (%) (206) Space heating fuel (main system 1), kwh/month Water heating Efficiency of water heater (211)1...5, = (211) (217) Water heating fuel, kwh/month (219a) = (219) Page 3 URN: Building 11 2B End version 2 Page 4 URN: Building 11 2B End version 2

88 Annual totals Space heating fuel main system Water heating fuel Electricity for pumps, fans and electric keep hot (Table 4f) central heating pump or water pump within warm air heating unit (230c) boiler flue fan (230e) Total electricity for the above, kwh/year (231) Electricity for lighting (Appendix L) (232) Total delivered energy for all uses (211)...(221) + (231) + (232)...(237b) = (238) 10a. Fuel costs - individual heating systems including micro-chp Fuel kwh/year Fuel price Fuel cost /year Space heating main system x 3.48 x 0.01 = (240) Water heating x 3.48 x 0.01 = (247) Pumps and fans x x 0.01 = 9.89 (249) Electricity for lighting x x 0.01 = (250) Additional standing charges (251) Total energy cost (240)...(242) + (245)...(254) = (255) 11a. SAP rating - individual heating systems including micro-chp Energy cost deflator (Table 12) 0.42 (256) Energy cost factor (ECF) 1.34 (257) SAP value SAP rating (section 13) 81 (258) SAP band B 12a. CO₂ emissions - individual heating systems including micro-chp Energy kwh/year Emission factor kg CO₂/kWh Emissions kg CO₂/year Space heating main system x 0.22 = (261) Water heating x 0.22 = (264) Space and water heating (261) + (262) + (263) + (264) = (265) Pumps and fans x 0.52 = (267) Electricity for lighting x 0.52 = (268) Total CO₂, kg/year (265)...(271) = (272) Dwelling CO₂ emission rate (272) (4) = (273) EI value EI rating (section 14) 83 (274) EI band B 13a. Primary energy - individual heating systems including micro-chp Energy kwh/year Primary factor Primary Energy kwh/year Space heating main system x 1.22 = (261) Water heating x 1.22 = (264) Space and water heating (261) + (262) + (263) + (264) = (265) Pumps and fans x 3.07 = (267) Electricity for lighting x 3.07 = (268) Primary energy kwh/year (272) Dwelling primary energy rate kwh/m2/year (273) Page 5 URN: Building 11 2B End version 2 Page 6 URN: Building 11 2B End version 2

89 DER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 2B Mid Fl B11 (mid dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.72 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 0 x 10 = 0 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 0 (5) = 0.00 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area 3.50 (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.18 (18) Number of sides on which the dwelling is sheltered 3 (19) Shelter factor 1 [0.075 x (19)] = 0.78 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.14 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system 0.50 (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h (23c) a) If balanced mechanical ventilation with heat recovery (MVHR) (22b)m + (23b) x [1 (23c) 100] (24a) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 2.48 x 1.00 = 2.48 (26) Window x 1.24 = (27) External wall x 0.18 = 3.16 (29a) Party wall x 0.00 = 0.00 (32) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K 5.25 (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 0.67 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 2.18 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: b) Manufacturer's declared loss factor is not known Hot water storage loss factor from Table 2 (kwh/litre/day) 0.02 (51) Volume factor from Table 2a 3.91 (52) Temperature factor from Table 2b 1.00 (53) Energy lost from water storage (kwh/day) (47) x (51) x (52) x (53) 0.17 (54) Enter (50) or (54) in (55) 0.17 (55) Water storage loss calculated for each month (55) x (41)m (56) If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) Axκ, kj/k Page 1 URN: Building 11 2B Mid version 2 Page 2 URN: Building 11 2B Mid version 2

90 (57) Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c Gains W East 0.77 x 8.98 x x 0.9 x 0.50 x 0.80 = (76) West 0.77 x 5.96 x x 0.9 x 0.50 x 0.80 = (80) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.52 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate 8. Space heating requirement (93) Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9b. Energy requirements - community heating scheme Fraction of space heat from secondary/supplementary system (table 11) '0' if none 0.00 (301) Fraction of space heat from community system 1 (301) = 1.00 (302) Fraction of community heat from CHP 0.00 (303a) Fraction of community heat from boilers 1.00 (303b) Fraction of total space heat from community CHP (302) x (303a) = 0.00 (304a) Fraction of total space heat from community boilers (302) x (303b) = 1.00 (304b) Factor for control and charging method (Table 4c(3)) for community space heating 1.00 (305) Factor for charging method (Table 4c(3)) for community water heating 1.00 (305a) Distribution loss factor (Table 12c) for community heating system 1.05 (306) Space heating Annual space heating requirement (98) Space heat from CHP (98) x (304a) x (305) x (306) = 0.00 (307a) Space heat from boilers (98) x (304b) x (305) x (306) = (307b) Water heating Annual water heating requirement (64) Page 3 URN: Building 11 2B Mid version 2 Page 4 URN: Building 11 2B Mid version 2

91 Water heat from boilers (64) x (303a) x (305a) x (306) = (310a) Electricity used for heat distribution 0.01 [(307a) (307e) + (310a) (310e)] = (313) Electricity for pumps, fans and electric keep hot (Table 4f) mechanical ventilation fans balanced, extract or positive input from outside (330a) Total electricity for the above, kwh/year (331) Electricity for lighting (Appendix L) (332) Total delivered energy for all uses (307) + (309) + (310) + (312) + (315) + (331) + (332)...(337b) = (338) 10b. Fuel costs - community heating scheme Fuel kwh/year Fuel price Fuel cost /year Space heating from CHP 0.00 x 2.97 x 0.01 = 0.00 (340a) Space heating from boilers x 4.24 x 0.01 = (340b) Water heating from boilers x 4.24 x 0.01 = (342a) Pumps and fans x x 0.01 = (349) Electricity for lighting x x 0.01 = (350) Additional standing charges (351) Total energy cost (340a)...(342e) + (345)...(354) = (355) 11b. SAP rating - community heating scheme Energy cost deflator (Table 12) 0.42 (356) Energy cost factor (ECF) 1.11 (357) SAP value SAP rating (section 13) 85 (358) SAP band B 12b. CO₂ emissions - community heating scheme Energy kwh/year Emission factor Emissions (kg/year) Emissions from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Emissions from other sources (space heating) Efficiency of boilers (367b) CO2 emissions from boilers [(307b)+(310b)] x 100 (367b) = x = (368) Electrical energy for community heat distribution x 0.52 = (372) Total CO2 associated with community systems (373) Total CO2 associated with space and water heating (376) Pumps and fans x 0.52 = (378) Electricity for lighting x 0.52 = (379) Total CO₂, kg/year (376)..(382) = (383) Dwelling CO₂ emission rate (383) (4) = (384) EI value EI rating (section 14) 89 (385) EI band B Primary Energy from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Primary energy from other sources (space heating) Efficiency of boilers (367b) Primary energy from boilers [(307b)+(310b)] x 100 (367b) = x 1.22 = (368) Electrical energy for community heat distribution x 3.07 = (372) Total primary energy associated with community systems (373) Total primary energy associated with space and water heating (376) Pumps and fans x 3.07 = (378) Electricity for lighting x 3.07 = (379) Primary energy kwh/year (383) Dwelling primary energy rate kwh/m2/year (384) 13b. Primary energy - community heating scheme Energy kwh/year Primary factor Primary energy (kwh/year) Page 5 URN: Building 11 2B Mid version 2 Page 6 URN: Building 11 2B Mid version 2

92 TER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 2B Mid Fl B11 (mid dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.72 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 2 x 10 = 20 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 20 (5) = 0.11 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area 5.00 (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.36 (18) Number of sides on which the dwelling is sheltered 3 (19) Shelter factor 1 [0.075 x (19)] = 0.78 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.28 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system N/A (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h N/A (23c) d) natural ventilation or whole house positive input ventilation from loft (24d) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 2.48 x 1.00 = 2.48 (26) Window x 1.33 = (27) External wall x 0.18 = 3.26 (29a) Party wall x 0.00 = 0.00 (32) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K 1.75 (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 0.88 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 2.18 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: a) If manufacturer's declared loss factor is known (kwh/day) 0.24 (48) Temperature factor from Table 2b 0.54 (49) Energy lost from water storage (kwh/day) (48) x (49) 0.13 (50) Enter (50) or (54) in (55) 0.13 (55) Water storage loss calculated for each month (55) x (41)m (56) If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Primary circuit loss for each month from Table 3 Axκ, kj/k Page 1 URN: Building 11 2B Mid version 2 Page 2 URN: Building 11 2B Mid version 2

93 (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c East 0.77 x 8.66 x x 0.9 x 0.63 x 0.70 = (76) West 0.77 x 5.74 x x 0.9 x 0.63 x 0.70 = (80) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) Gains W 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.52 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate 8. Space heating requirement Utilisation factor for gains, ƞm (93) (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9a. Energy requirements - individual heating systems including micro-chp Space heating Fraction of space heat from secondary/supplementary system (table 11) 0.00 (201) Fraction of space heat from main system(s) 1 (201) = 1.00 (202) Fraction of space heat from main system (202) Fraction of total space heat from main system 1 (202) x [1 (203)] = 1.00 (204) Fraction of total space heat from main system 2 (202) x (203) = 0.00 (205) Efficiency of main system 1 (%) (206) Space heating fuel (main system 1), kwh/month Water heating Efficiency of water heater Water heating fuel, kwh/month (211)1...5, = (211) (217) (219a) = (219) Annual totals Space heating fuel main system Page 3 URN: Building 11 2B Mid version 2 Page 4 URN: Building 11 2B Mid version 2

94 Water heating fuel Electricity for pumps, fans and electric keep hot (Table 4f) central heating pump or water pump within warm air heating unit (230c) boiler flue fan (230e) Total electricity for the above, kwh/year (231) Electricity for lighting (Appendix L) (232) Total delivered energy for all uses (211)...(221) + (231) + (232)...(237b) = (238) 10a. Fuel costs - individual heating systems including micro-chp Fuel kwh/year Fuel price Fuel cost /year Space heating main system x 3.48 x 0.01 = (240) Water heating x 3.48 x 0.01 = (247) Pumps and fans x x 0.01 = 9.89 (249) Electricity for lighting x x 0.01 = (250) Additional standing charges (251) Total energy cost (240)...(242) + (245)...(254) = (255) 11a. SAP rating - individual heating systems including micro-chp Energy cost deflator (Table 12) 0.42 (256) Energy cost factor (ECF) 1.11 (257) SAP value SAP rating (section 13) 84 (258) SAP band B 12a. CO₂ emissions - individual heating systems including micro-chp Energy kwh/year Emission factor kg CO₂/kWh Emissions kg CO₂/year Space heating main system x 0.22 = (261) Water heating x 0.22 = (264) Space and water heating (261) + (262) + (263) + (264) = (265) Pumps and fans x 0.52 = (267) Electricity for lighting x 0.52 = (268) Total CO₂, kg/year (265)...(271) = (272) Dwelling CO₂ emission rate (272) (4) = (273) EI value EI rating (section 14) 88 (274) EI band B 13a. Primary energy - individual heating systems including micro-chp Energy kwh/year Primary factor Primary Energy kwh/year Space heating main system x 1.22 = (261) Water heating x 1.22 = (264) Space and water heating (261) + (262) + (263) + (264) = (265) Pumps and fans x 3.07 = (267) Electricity for lighting x 3.07 = (268) Primary energy kwh/year (272) Dwelling primary energy rate kwh/m2/year (273) DER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 3B Mais B11 (end dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.72 (2a) = (3a) (1b) x 2.72 (2b) = (3b) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 0 x 10 = 0 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 0 (5) = 0.00 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area 3.50 (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.18 (18) Number of sides on which the dwelling is sheltered 1 (19) Shelter factor 1 [0.075 x (19)] = 0.93 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.16 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system 0.50 (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h (23c) a) If balanced mechanical ventilation with heat recovery (MVHR) (22b)m + (23b) x [1 (23c) 100] (24a) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) Page 5 URN: Building 11 2B Mid version 2 Page 1 URN: 3B Maisonette version 2

95 (25) 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 2.48 x 1.00 = 2.48 (26) Window x 1.24 = (27) External wall x 0.18 = (29a) Party wall x 0.00 = 0.00 (32) Roof x 0.10 = 6.34 (30) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 1.11 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 2.78 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: b) Manufacturer's declared loss factor is not known Hot water storage loss factor from Table 2 (kwh/litre/day) 0.02 (51) Volume factor from Table 2a 3.91 (52) Temperature factor from Table 2b 1.00 (53) Energy lost from water storage (kwh/day) (47) x (51) x (52) x (53) 0.17 (54) Enter (50) or (54) in (55) 0.17 (55) Water storage loss calculated for each month (55) x (41)m Axκ, kj/k (56) If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c East 0.77 x x x 0.9 x 0.50 x 0.80 = (76) South 0.77 x 8.17 x x 0.9 x 0.50 x 0.80 = (78) West 0.77 x 5.23 x x 0.9 x 0.50 x 0.80 = (80) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Gains W Page 2 URN: 3B Maisonette version 2 Page 3 URN: 3B Maisonette version 2

96 Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.47 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate (93) 8. Space heating requirement Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9b. Energy requirements - community heating scheme Fraction of space heat from secondary/supplementary system (table 11) '0' if none 0.00 (301) Fraction of space heat from community system 1 (301) = 1.00 (302) Fraction of community heat from CHP 0.00 (303a) Fraction of community heat from boilers 1.00 (303b) Fraction of total space heat from community CHP (302) x (303a) = 0.00 (304a) Fraction of total space heat from community boilers (302) x (303b) = 1.00 (304b) Factor for control and charging method (Table 4c(3)) for community space heating 1.00 (305) Factor for charging method (Table 4c(3)) for community water heating 1.00 (305a) Distribution loss factor (Table 12c) for community heating system 1.05 (306) Space heating Annual space heating requirement (98) Space heat from CHP (98) x (304a) x (305) x (306) = 0.00 (307a) Space heat from boilers (98) x (304b) x (305) x (306) = (307b) Water heating Annual water heating requirement (64) Water heat from boilers (64) x (303a) x (305a) x (306) = (310a) Electricity used for heat distribution 0.01 [(307a) (307e) + (310a) (310e)] = (313) Electricity for pumps, fans and electric keep hot (Table 4f) mechanical ventilation fans balanced, extract or positive input from outside (330a) Total electricity for the above, kwh/year (331) Electricity for lighting (Appendix L) (332) Total delivered energy for all uses (307) + (309) + (310) + (312) + (315) + (331) + (332)...(337b) = (338) 10b. Fuel costs - community heating scheme Fuel kwh/year Fuel price Fuel cost /year Space heating from CHP 0.00 x 2.97 x 0.01 = 0.00 (340a) Space heating from boilers x 4.24 x 0.01 = (340b) Water heating from boilers x 4.24 x 0.01 = (342a) Pumps and fans x x 0.01 = (349) Electricity for lighting x x 0.01 = (350) Additional standing charges (351) Total energy cost (340a)...(342e) + (345)...(354) = (355) 11b. SAP rating - community heating scheme Energy cost deflator (Table 12) 0.42 (356) Energy cost factor (ECF) 1.31 (357) SAP value SAP rating (section 13) 82 (358) SAP band B 12b. CO₂ emissions - community heating scheme Energy kwh/year Emission factor Emissions (kg/year) Emissions from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Emissions from other sources (space heating) Efficiency of boilers (367b) CO2 emissions from boilers [(307b)+(310b)] x 100 (367b) = x = (368) Electrical energy for community heat distribution x 0.52 = (372) Total CO2 associated with community systems (373) Total CO2 associated with space and water heating (376) Pumps and fans x 0.52 = (378) Electricity for lighting x 0.52 = (379) Total CO₂, kg/year (376)..(382) = (383) Dwelling CO₂ emission rate (383) (4) = (384) EI value EI rating (section 14) 83 (385) EI band B Page 4 URN: 3B Maisonette version 2 Page 5 URN: 3B Maisonette version 2

97 13b. Primary energy - community heating scheme Energy kwh/year Primary factor Primary energy (kwh/year) Primary Energy from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Primary energy from other sources (space heating) Efficiency of boilers (367b) Primary energy from boilers [(307b)+(310b)] x 100 (367b) = x 1.22 = (368) Electrical energy for community heat distribution x 3.07 = (372) Total primary energy associated with community systems (373) Total primary energy associated with space and water heating (376) Pumps and fans x 3.07 = (378) Electricity for lighting x 3.07 = (379) Primary energy kwh/year (383) Dwelling primary energy rate kwh/m2/year (384) TER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 3B Mais B11 (end dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.72 (2a) = (3a) (1b) x 2.72 (2b) = (3b) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 4 x 10 = 40 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 40 (5) = 0.14 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area 5.00 (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.39 (18) Number of sides on which the dwelling is sheltered 1 (19) Shelter factor 1 [0.075 x (19)] = 0.93 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.36 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system N/A (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h N/A (23c) d) natural ventilation or whole house positive input ventilation from loft (24d) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) Page 6 URN: 3B Maisonette version 2 Page 1 URN: 3B Maisonette version 2

98 (25) 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 2.48 x 1.00 = 2.48 (26) Window x 1.33 = (27) External wall x 0.18 = (29a) Party wall x 0.00 = 0.00 (32) Roof x 0.13 = 8.25 (30) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 1.42 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 2.78 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: a) If manufacturer's declared loss factor is known (kwh/day) 0.24 (48) Temperature factor from Table 2b 0.54 (49) Energy lost from water storage (kwh/day) (48) x (49) 0.13 (50) Enter (50) or (54) in (55) 0.13 (55) Water storage loss calculated for each month (55) x (41)m (56) If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) Axκ, kj/k (57) Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c Gains W East 0.77 x x x 0.9 x 0.63 x 0.70 = (76) South 0.77 x 6.66 x x 0.9 x 0.63 x 0.70 = (78) West 0.77 x 4.27 x x 0.9 x 0.63 x 0.70 = (80) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Page 2 URN: 3B Maisonette version 2 Page 3 URN: 3B Maisonette version 2

99 Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.47 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate (93) 8. Space heating requirement Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9a. Energy requirements - individual heating systems including micro-chp Space heating Fraction of space heat from secondary/supplementary system (table 11) 0.00 (201) Fraction of space heat from main system(s) 1 (201) = 1.00 (202) Fraction of space heat from main system (202) Fraction of total space heat from main system 1 (202) x [1 (203)] = 1.00 (204) Fraction of total space heat from main system 2 (202) x (203) = 0.00 (205) Efficiency of main system 1 (%) (206) Space heating fuel (main system 1), kwh/month Water heating Efficiency of water heater (211)1...5, = (211) (217) Water heating fuel, kwh/month (219a) = (219) Annual totals Space heating fuel main system Water heating fuel Electricity for pumps, fans and electric keep hot (Table 4f) central heating pump or water pump within warm air heating unit (230c) boiler flue fan (230e) Total electricity for the above, kwh/year (231) Electricity for lighting (Appendix L) (232) Total delivered energy for all uses (211)...(221) + (231) + (232)...(237b) = (238) 10a. Fuel costs - individual heating systems including micro-chp Fuel kwh/year Fuel price Fuel cost /year Space heating main system x 3.48 x 0.01 = (240) Water heating x 3.48 x 0.01 = (247) Pumps and fans x x 0.01 = 9.89 (249) Electricity for lighting x x 0.01 = (250) Additional standing charges (251) Total energy cost (240)...(242) + (245)...(254) = (255) 11a. SAP rating - individual heating systems including micro-chp Energy cost deflator (Table 12) 0.42 (256) Energy cost factor (ECF) 1.32 (257) SAP value SAP rating (section 13) 82 (258) SAP band B 12a. CO₂ emissions - individual heating systems including micro-chp Energy kwh/year Emission factor kg CO₂/kWh Emissions kg CO₂/year Space heating main system x 0.22 = (261) Water heating x 0.22 = (264) Space and water heating (261) + (262) + (263) + (264) = (265) Pumps and fans x 0.52 = (267) Electricity for lighting x 0.52 = (268) Total CO₂, kg/year (265)...(271) = (272) Dwelling CO₂ emission rate (272) (4) = (273) EI value EI rating (section 14) 82 (274) EI band B 13a. Primary energy - individual heating systems including micro-chp Energy kwh/year Primary factor Primary Energy kwh/year Space heating main system x 1.22 = (261) Water heating x 1.22 = (264) Space and water heating (261) + (262) + (263) + (264) = (265) Pumps and fans x 3.07 = (267) Electricity for lighting x 3.07 = (268) Page 4 URN: 3B Maisonette version 2 Page 5 URN: 3B Maisonette version 2

100 Primary energy kwh/year (272) Dwelling primary energy rate kwh/m2/year (273) Page 6 URN: 3B Maisonette version 2

101 Appendix D DER Worksheets Dwellings Assessed under Part L1B

102 Der Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 18/07/2016 Address 1. Overall dwelling dimensions 2B Mais B11 Refurb Baseline (mid dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.61 (2a) = (3a) (1b) x 2.74 (2b) = (3b) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 3 x 10 = 30 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 30 (5) = 0.12 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Number of storeys in the dwelling 2 (9) Additional infiltration 0.10 (10) Structural infiltration: 0.25 for steel or timber frame or 0.35 for masonry construction 0.35 (11) If suspended wooden ground floor, enter 0.2 (unsealed) or 0.1 (sealed), else enter (12) If no draught lobby, enter 0.05, else enter (13) Percentage of windows and doors draught proofed (14) Window infiltration 0.25 [0.2 x (14) 100] = 0.22 (15) Infiltration rate (8) + (10) + (11) + (12) + (13) + (15) = 0.84 (16) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.84 (18) Number of sides on which the dwelling is sheltered 3 (19) Shelter factor 1 [0.075 x (19)] = 0.78 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.65 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system N/A (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h N/A (23c) d) natural ventilation or whole house positive input ventilation from loft (24d) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Axκ, kj/k Door 4.19 x 3.00 = (26) Window x 4.03 = (27) Ground floor x 0.54 = (28a) External wall x 1.56 = (29a) Party wall x 0.00 = 0.00 (32) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 3.26 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 2.61 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: Page 1 URN: B11 exist 2B Mais version 1 Page 2 URN: B11 exist 2B Mais version 1

103 b) Manufacturer's declared loss factor is not known Hot water storage loss factor from Table 2 (kwh/litre/day) 0.02 (51) Volume factor from Table 2a 3.91 (52) Temperature factor from Table 2b 1.00 (53) Energy lost from water storage (kwh/day) (47) x (51) x (52) x (53) 0.17 (54) Enter (50) or (54) in (55) 0.17 (55) Water storage loss calculated for each month (55) x (41)m (56) If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c West 0.30 x 5.51 x x 0.9 x 0.85 x 0.70 = (80) East 0.77 x 7.41 x x 0.9 x 0.85 x 0.70 = (76) Gains W West 0.77 x 7.00 x x 0.9 x 0.85 x 0.70 = (80) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.28 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate (93) 8. Space heating requirement Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9b. Energy requirements - community heating scheme Fraction of space heat from secondary/supplementary system (table 11) '0' if none 0.00 (301) Fraction of space heat from community system 1 (301) = 1.00 (302) Fraction of community heat from boilers 1.00 (303a) Fraction of total space heat from community boilers (302) x (303a) = 1.00 (304a) Factor for control and charging method (Table 4c(3)) for community space heating 1.05 (305) Factor for charging method (Table 4c(3)) for community water heating 1.05 (305a) Distribution loss factor (Table 12c) for community heating system 1.10 (306) Page 3 URN: B11 exist 2B Mais version 1 Page 4 URN: B11 exist 2B Mais version 1

104 Space heating Annual space heating requirement (98) Space heat from boilers (98) x (304a) x (305) x (306) = (307a) Water heating Annual water heating requirement (64) Water heat from boilers (64) x (303a) x (305a) x (306) = (310a) Electricity used for heat distribution 0.01 [(307a) (307e) + (310a) (310e)] = (313) Electricity for pumps, fans and electric keep hot (Table 4f) Total electricity for the above, kwh/year 0.00 (331) Electricity for lighting (Appendix L) (332) Total delivered energy for all uses (307) + (309) + (310) + (312) + (315) + (331) + (332)...(337b) = (338) 10b. Fuel costs - community heating scheme Fuel kwh/year Fuel price Fuel cost /year Space heating from boilers x 4.24 x 0.01 = (340a) Water heating from boilers x 4.24 x 0.01 = (342a) Electricity for lighting x x 0.01 = (350) Additional standing charges (351) Total energy cost (340a)...(342e) + (345)...(354) = (355) 11b. SAP rating - community heating scheme Energy cost deflator (Table 12) 0.42 (356) Energy cost factor (ECF) 2.91 (357) SAP value SAP rating (section 13) 59 (358) SAP band D 12b. CO₂ emissions - community heating scheme Energy kwh/year Emission factor Emissions (kg/year) Emissions from other sources (space heating) Efficiency of boilers (367a) CO2 emissions from boilers [(307a)+(310a)] x 100 (367a) = x = (367) Electrical energy for community heat distribution x 0.52 = (372) Total CO2 associated with community systems (373) Total CO2 associated with space and water heating (376) Electricity for lighting x 0.52 = (379) Total CO₂, kg/year (376)..(382) = (383) Dwelling CO₂ emission rate (383) (4) = (384) EI value EI rating (section 14) 48 (385) EI band E Efficiency of boilers (367a) Primary energy from boilers [(307a)+(310a)] x 100 (367a) = x 1.22 = (367) Electrical energy for community heat distribution x 3.07 = (372) Total primary energy associated with community systems (373) Total primary energy associated with space and water heating (376) Electricity for lighting x 3.07 = (379) Primary energy kwh/year (383) Dwelling primary energy rate kwh/m2/year (384) 13b. Primary energy - community heating scheme Energy kwh/year Primary factor Primary energy (kwh/year) Primary energy from other sources (space heating) Page 5 URN: B11 exist 2B Mais version 1 Page 6 URN: B11 exist 2B Mais version 1

105 Der Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 18/07/2016 Address 1. Overall dwelling dimensions 2B Mais. B11 Refurb Be Lean (mid dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.61 (2a) = (3a) (1b) x 2.74 (2b) = (3b) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 3 x 10 = 30 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 30 (5) = 0.12 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Number of storeys in the dwelling 2 (9) Additional infiltration 0.10 (10) Structural infiltration: 0.25 for steel or timber frame or 0.35 for masonry construction 0.35 (11) If suspended wooden ground floor, enter 0.2 (unsealed) or 0.1 (sealed), else enter (12) If no draught lobby, enter 0.05, else enter (13) Percentage of windows and doors draught proofed (14) Window infiltration 0.25 [0.2 x (14) 100] = 0.22 (15) Infiltration rate (8) + (10) + (11) + (12) + (13) + (15) = 0.84 (16) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.84 (18) Number of sides on which the dwelling is sheltered 3 (19) Shelter factor 1 [0.075 x (19)] = 0.78 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.65 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system N/A (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h N/A (23c) d) natural ventilation or whole house positive input ventilation from loft (24d) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Axκ, kj/k Door 4.19 x 3.00 = (26) Window x 1.42 = (27) Ground floor x 0.54 = (28a) External wall x 1.56 = (29a) Party wall x 0.00 = 0.00 (32) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 2.67 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 2.61 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: Page 1 URN: B11 exist 2B Mais version 2 Page 2 URN: B11 exist 2B Mais version 2

106 b) Manufacturer's declared loss factor is not known Hot water storage loss factor from Table 2 (kwh/litre/day) 0.02 (51) Volume factor from Table 2a 3.91 (52) Temperature factor from Table 2b 1.00 (53) Energy lost from water storage (kwh/day) (47) x (51) x (52) x (53) 0.17 (54) Enter (50) or (54) in (55) 0.17 (55) Water storage loss calculated for each month (55) x (41)m (56) If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c West 0.30 x 5.51 x x 0.9 x 0.76 x 0.70 = (80) East 0.77 x 7.41 x x 0.9 x 0.76 x 0.70 = (76) Gains W West 0.77 x 7.00 x x 0.9 x 0.76 x 0.70 = (80) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.28 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate (93) 8. Space heating requirement Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9b. Energy requirements - community heating scheme Fraction of space heat from secondary/supplementary system (table 11) '0' if none 0.00 (301) Fraction of space heat from community system 1 (301) = 1.00 (302) Fraction of community heat from boilers 1.00 (303a) Fraction of total space heat from community boilers (302) x (303a) = 1.00 (304a) Factor for control and charging method (Table 4c(3)) for community space heating 1.00 (305) Factor for charging method (Table 4c(3)) for community water heating 1.00 (305a) Distribution loss factor (Table 12c) for community heating system 1.05 (306) Page 3 URN: B11 exist 2B Mais version 2 Page 4 URN: B11 exist 2B Mais version 2

107 Space heating Annual space heating requirement (98) Space heat from boilers (98) x (304a) x (305) x (306) = (307a) Water heating Annual water heating requirement (64) Water heat from boilers (64) x (303a) x (305a) x (306) = (310a) Electricity used for heat distribution 0.01 [(307a) (307e) + (310a) (310e)] = (313) Electricity for pumps, fans and electric keep hot (Table 4f) Total electricity for the above, kwh/year 0.00 (331) Electricity for lighting (Appendix L) (332) Total delivered energy for all uses (307) + (309) + (310) + (312) + (315) + (331) + (332)...(337b) = (338) 10b. Fuel costs - community heating scheme Fuel kwh/year Fuel price Fuel cost /year Space heating from boilers x 4.24 x 0.01 = (340a) Water heating from boilers x 4.24 x 0.01 = (342a) Electricity for lighting x x 0.01 = (350) Additional standing charges (351) Total energy cost (340a)...(342e) + (345)...(354) = (355) 11b. SAP rating - community heating scheme Energy cost deflator (Table 12) 0.42 (356) Energy cost factor (ECF) 2.16 (357) SAP value SAP rating (section 13) 70 (358) SAP band C 12b. CO₂ emissions - community heating scheme Energy kwh/year Emission factor Emissions (kg/year) Emissions from other sources (space heating) Efficiency of boilers (367a) CO2 emissions from boilers [(307a)+(310a)] x 100 (367a) = x = (367) Electrical energy for community heat distribution x 0.52 = (372) Total CO2 associated with community systems (373) Total CO2 associated with space and water heating (376) Electricity for lighting x 0.52 = (379) Total CO₂, kg/year (376)..(382) = (383) Dwelling CO₂ emission rate (383) (4) = (384) EI value EI rating (section 14) 67 (385) EI band D Efficiency of boilers (367a) Primary energy from boilers [(307a)+(310a)] x 100 (367a) = x 1.22 = (367) Electrical energy for community heat distribution x 3.07 = (372) Total primary energy associated with community systems (373) Total primary energy associated with space and water heating (376) Electricity for lighting x 3.07 = (379) Primary energy kwh/year (383) Dwelling primary energy rate kwh/m2/year (384) 13b. Primary energy - community heating scheme Energy kwh/year Primary factor Primary energy (kwh/year) Primary energy from other sources (space heating) Page 5 URN: B11 exist 2B Mais version 2 Page 6 URN: B11 exist 2B Mais version 2

108 Der Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 18/07/2016 Address 1. Overall dwelling dimensions 1B Mid Fl B11 Refurb Baseline (end dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.61 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 2 x 10 = 20 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 20 (5) = 0.12 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Number of storeys in the dwelling 1 (9) Additional infiltration 0.00 (10) Structural infiltration: 0.25 for steel or timber frame or 0.35 for masonry construction 0.35 (11) If suspended wooden ground floor, enter 0.2 (unsealed) or 0.1 (sealed), else enter (12) If no draught lobby, enter 0.05, else enter (13) Percentage of windows and doors draught proofed 0.00 (14) Window infiltration 0.25 [0.2 x (14) 100] = 0.25 (15) Infiltration rate (8) + (10) + (11) + (12) + (13) + (15) = 0.77 (16) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.77 (18) Number of sides on which the dwelling is sheltered 3 (19) Shelter factor 1 [0.075 x (19)] = 0.78 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.60 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system N/A (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h N/A (23c) d) natural ventilation or whole house positive input ventilation from loft (24d) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Axκ, kj/k Window x 4.03 = (27) Door 2.28 x 3.00 = 6.84 (26) External wall x 1.56 = (29a) Party wall x 0.00 = 0.00 (32) Roof x 2.30 = (30) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 3.29 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 2.05 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: b) Manufacturer's declared loss factor is not known Page 1 URN: B11 exist 1B Mid version 1 Page 2 URN: B11 exist 1B Mid version 1

109 Hot water storage loss factor from Table 2 (kwh/litre/day) 0.02 (51) Volume factor from Table 2a 3.91 (52) Temperature factor from Table 2b 1.00 (53) Energy lost from water storage (kwh/day) (47) x (51) x (52) x (53) 0.17 (54) Enter (50) or (54) in (55) 0.17 (55) Water storage loss calculated for each month (55) x (41)m (56) If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c East 0.77 x 4.62 x x 0.9 x 0.85 x 0.70 = (76) West 0.77 x 6.93 x x 0.9 x 0.85 x 0.70 = (80) Solar gains in watts (74)m...(82)m Gains W (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.48 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate (93) 8. Space heating requirement Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9b. Energy requirements - community heating scheme Fraction of space heat from secondary/supplementary system (table 11) '0' if none 0.00 (301) Fraction of space heat from community system 1 (301) = 1.00 (302) Fraction of community heat from boilers 1.00 (303a) Fraction of total space heat from community boilers (302) x (303a) = 1.00 (304a) Factor for control and charging method (Table 4c(3)) for community space heating 1.05 (305) Factor for charging method (Table 4c(3)) for community water heating 1.05 (305a) Distribution loss factor (Table 12c) for community heating system 1.10 (306) Space heating Annual space heating requirement (98) Page 3 URN: B11 exist 1B Mid version 1 Page 4 URN: B11 exist 1B Mid version 1

110 Space heat from boilers (98) x (304a) x (305) x (306) = (307a) Water heating Annual water heating requirement (64) Water heat from boilers (64) x (303a) x (305a) x (306) = (310a) Electricity used for heat distribution 0.01 [(307a) (307e) + (310a) (310e)] = (313) Electrical energy for community heat distribution x 3.07 = (372) Total primary energy associated with community systems (373) Total primary energy associated with space and water heating (376) Electricity for lighting x 3.07 = (379) Primary energy kwh/year (383) Dwelling primary energy rate kwh/m2/year (384) Electricity for pumps, fans and electric keep hot (Table 4f) Total electricity for the above, kwh/year 0.00 (331) Electricity for lighting (Appendix L) (332) Total delivered energy for all uses (307) + (309) + (310) + (312) + (315) + (331) + (332)...(337b) = (338) 10b. Fuel costs - community heating scheme Fuel kwh/year Fuel price Fuel cost /year Space heating from boilers x 4.24 x 0.01 = (340a) Water heating from boilers x 4.24 x 0.01 = (342a) Electricity for lighting x x 0.01 = (350) Additional standing charges (351) Total energy cost (340a)...(342e) + (345)...(354) = (355) 11b. SAP rating - community heating scheme Energy cost deflator (Table 12) 0.42 (356) Energy cost factor (ECF) 2.84 (357) SAP value SAP rating (section 13) 60 (358) SAP band D 12b. CO₂ emissions - community heating scheme Energy kwh/year Emission factor Emissions (kg/year) Emissions from other sources (space heating) Efficiency of boilers (367a) CO2 emissions from boilers [(307a)+(310a)] x 100 (367a) = x = (367) Electrical energy for community heat distribution x 0.52 = (372) Total CO2 associated with community systems (373) Total CO2 associated with space and water heating (376) Electricity for lighting x 0.52 = (379) Total CO₂, kg/year (376)..(382) = (383) Dwelling CO₂ emission rate (383) (4) = (384) EI value EI rating (section 14) 51 (385) EI band E 13b. Primary energy - community heating scheme Energy kwh/year Primary factor Primary energy (kwh/year) Primary energy from other sources (space heating) Efficiency of boilers (367a) Primary energy from boilers [(307a)+(310a)] x 100 (367a) = x 1.22 = (367) Page 5 URN: B11 exist 1B Mid version 1 Page 6 URN: B11 exist 1B Mid version 1

111 Der Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 18/07/2016 Address 1. Overall dwelling dimensions 1B Mid Fl B11 Refurb Be Lean (end dwelling), Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.61 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 2 x 10 = 20 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 20 (5) = 0.12 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Number of storeys in the dwelling 1 (9) Additional infiltration 0.00 (10) Structural infiltration: 0.25 for steel or timber frame or 0.35 for masonry construction 0.35 (11) If suspended wooden ground floor, enter 0.2 (unsealed) or 0.1 (sealed), else enter (12) If no draught lobby, enter 0.05, else enter (13) Percentage of windows and doors draught proofed 0.00 (14) Window infiltration 0.25 [0.2 x (14) 100] = 0.25 (15) Infiltration rate (8) + (10) + (11) + (12) + (13) + (15) = 0.77 (16) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.77 (18) Number of sides on which the dwelling is sheltered 3 (19) Shelter factor 1 [0.075 x (19)] = 0.78 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.60 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system N/A (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h N/A (23c) d) natural ventilation or whole house positive input ventilation from loft (24d) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Axκ, kj/k Window x 1.42 = (27) Door 2.28 x 3.00 = 6.84 (26) External wall x 1.56 = (29a) Party wall x 0.00 = 0.00 (32) Roof x 0.18 = 2.52 (30) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 2.33 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 2.05 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: b) Manufacturer's declared loss factor is not known Page 1 URN: B11 exist 1B Mid version 2 Page 2 URN: B11 exist 1B Mid version 2

112 Hot water storage loss factor from Table 2 (kwh/litre/day) 0.02 (51) Volume factor from Table 2a 3.91 (52) Temperature factor from Table 2b 1.00 (53) Energy lost from water storage (kwh/day) (47) x (51) x (52) x (53) 0.17 (54) Enter (50) or (54) in (55) 0.17 (55) Water storage loss calculated for each month (55) x (41)m (56) If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c East 0.77 x 4.62 x x 0.9 x 0.76 x 0.70 = (76) West 0.77 x 6.93 x x 0.9 x 0.76 x 0.70 = (80) Solar gains in watts (74)m...(82)m Gains W (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.48 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate (93) 8. Space heating requirement Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9b. Energy requirements - community heating scheme Fraction of space heat from secondary/supplementary system (table 11) '0' if none 0.00 (301) Fraction of space heat from community system 1 (301) = 1.00 (302) Fraction of community heat from boilers 1.00 (303a) Fraction of total space heat from community boilers (302) x (303a) = 1.00 (304a) Factor for control and charging method (Table 4c(3)) for community space heating 1.00 (305) Factor for charging method (Table 4c(3)) for community water heating 1.00 (305a) Distribution loss factor (Table 12c) for community heating system 1.05 (306) Space heating Annual space heating requirement (98) Page 3 URN: B11 exist 1B Mid version 2 Page 4 URN: B11 exist 1B Mid version 2

113 Space heat from boilers (98) x (304a) x (305) x (306) = (307a) Water heating Annual water heating requirement (64) Water heat from boilers (64) x (303a) x (305a) x (306) = (310a) Electricity used for heat distribution 0.01 [(307a) (307e) + (310a) (310e)] = (313) Electrical energy for community heat distribution x 3.07 = (372) Total primary energy associated with community systems (373) Total primary energy associated with space and water heating (376) Electricity for lighting x 3.07 = (379) Primary energy kwh/year (383) Dwelling primary energy rate kwh/m2/year (384) Electricity for pumps, fans and electric keep hot (Table 4f) Total electricity for the above, kwh/year 0.00 (331) Electricity for lighting (Appendix L) (332) Total delivered energy for all uses (307) + (309) + (310) + (312) + (315) + (331) + (332)...(337b) = (338) 10b. Fuel costs - community heating scheme Fuel kwh/year Fuel price Fuel cost /year Space heating from boilers x 4.24 x 0.01 = (340a) Water heating from boilers x 4.24 x 0.01 = (342a) Electricity for lighting x x 0.01 = (350) Additional standing charges (351) Total energy cost (340a)...(342e) + (345)...(354) = (355) 11b. SAP rating - community heating scheme Energy cost deflator (Table 12) 0.42 (356) Energy cost factor (ECF) 1.98 (357) SAP value SAP rating (section 13) 72 (358) SAP band C 12b. CO₂ emissions - community heating scheme Energy kwh/year Emission factor Emissions (kg/year) Emissions from other sources (space heating) Efficiency of boilers (367a) CO2 emissions from boilers [(307a)+(310a)] x 100 (367a) = x = (367) Electrical energy for community heat distribution x 0.52 = (372) Total CO2 associated with community systems (373) Total CO2 associated with space and water heating (376) Electricity for lighting x 0.52 = (379) Total CO₂, kg/year (376)..(382) = (383) Dwelling CO₂ emission rate (383) (4) = (384) EI value EI rating (section 14) 72 (385) EI band C 13b. Primary energy - community heating scheme Energy kwh/year Primary factor Primary energy (kwh/year) Primary energy from other sources (space heating) Efficiency of boilers (367a) Primary energy from boilers [(307a)+(310a)] x 100 (367a) = x 1.22 = (367) Page 5 URN: B11 exist 1B Mid version 2 Page 6 URN: B11 exist 1B Mid version 2

114 DER Worksheet Design - Draft This design submission has been carried out using Approved SAP software. It has been prepared from plans and specifications and may not reflect the property as constructed. Assessor name Mr Tom Gwilliam Assessor number 6879 Client Last modified 13/07/2016 Address 1. Overall dwelling dimensions 1B Top Fl B11 New Storey, Woolwich, SE18 Area (m²) Average storey height (m) Volume (m³) Lowest occupied (1a) x 2.62 (2a) = (3a) Total floor area (1a) + (1b) + (1c) + (1d)...(1n) = (4) Dwelling volume (3a) + (3b) + (3c) + (3d)...(3n) = (5) 2. Ventilation rate m³ per hour Number of chimneys 0 x 40 = 0 (6a) Number of open flues 0 x 20 = 0 (6b) Number of intermittent fans 2 x 10 = 20 (7a) Number of passive vents 0 x 10 = 0 (7b) Number of flueless gas fires 0 x 40 = 0 (7c) Air changes per hour Infiltration due to chimneys, flues, fans, PSVs (6a) + (6b) + (7a) + (7b) + (7c) = 20 (5) = 0.15 (8) If a pressurisation test has been carried out or is intended, proceed to (17), otherwise continue from (9) to (16) Air permeability value, q50, expressed in cubic metres per hour per square metre of envelope area (17) If based on air permeability value, then (18) = [(17) 20] + (8), otherwise (18) = (16) 0.90 (18) Number of sides on which the dwelling is sheltered 3 (19) Shelter factor 1 [0.075 x (19)] = 0.78 (20) Infiltration rate incorporating shelter factor (18) x (20) = 0.70 (21) Infiltration rate modified for monthly wind speed: Monthly average wind speed from Table U (22) Wind factor (22)m (22a) Adjusted infiltration rate (allowing for shelter and wind factor) (21) x (22a)m (22b) Calculate effective air change rate for the applicable case: If mechanical ventilation: air change rate through system N/A (23a) If balanced with heat recovery: efficiency in % allowing for in use factor from Table 4h N/A (23c) d) natural ventilation or whole house positive input ventilation from loft (24d) Effective air change rate enter (24a) or (24b) or (24c) or (24d) in (25) (25) 3. Heat losses and heat loss parameter Element Gross area, m² Openings m² Net area A, m² U-value W/m²K AxUW/K κ-value, kj/m².k Door 2.98 x 1.00 = 2.98 (26) Window 9.68 x 1.50 = (27) External wall x 0.28 = 9.41 (29a) Party wall x 0.00 = 0.00 (32) Roof x 0.16 = 8.42 (30) Total area of external elements A, m² (31) Fabric heat loss, W/K = (A U) (26)...(30) + (32) = (33) Heat capacity Cm = (A x κ) (28)...(30) + (32) + (32a)...(32e) = N/A (34) Thermal mass parameter (TMP) in kj/m²k (35) Thermal bridges: (L x Ψ) calculated using Appendix K (36) Total fabric heat loss (33) + (36) = (37) Ventilation heat loss calculated monthly 0.33 x (25)m x (5) (38) Heat transfer coefficient, W/K (37)m + (38)m Average = (39)1...12/12 = (39) Heat loss parameter (HLP), W/m²K (39)m (4) Average = (40)1...12/12 = 1.77 (40) Number of days in month (Table 1a) (40) 4. Water heating energy requirement Assumed occupancy, N 1.71 (42) Annual average hot water usage in litres per day Vd,average = (25 x N) (43) Hot water usage in litres per day for each month Vd,m = factor from Table 1c x (43) (44) = (44) Energy content of hot water used = 4.18 x Vd,m x nm x Tm/3600 kwh/month (see Tables 1b, 1c 1d) (45) = (45) Distribution loss 0.15 x (45)m (46) Storage volume (litres) including any solar or WWHRS storage within same vessel 2.00 (47) Water storage loss: b) Manufacturer's declared loss factor is not known Hot water storage loss factor from Table 2 (kwh/litre/day) 0.02 (51) Volume factor from Table 2a 3.91 (52) Temperature factor from Table 2b 1.00 (53) Energy lost from water storage (kwh/day) (47) x (51) x (52) x (53) 0.17 (54) Enter (50) or (54) in (55) 0.17 (55) Water storage loss calculated for each month (55) x (41)m (56) Axκ, kj/k Page 1 URN: B11 1B Top NEW version 2 Page 2 URN: B11 1B Top NEW version 2

115 If the vessel contains dedicated solar storage or dedicated WWHRS (56)m x [(47) Vs] (47), else (56) (57) Primary circuit loss for each month from Table (59) Combi loss for each month from Table 3a, 3b or 3c (61) Total heat required for water heating calculated for each month 0.85 x (45)m + (46)m + (57)m + (59)m + (61)m (62) Solar DHW input calculated using Appendix G or Appendix H (63) Output from water heater for each month (kwh/month) (62)m + (63)m (64) = (64) Heat gains from water heating (kwh/month) 0.25 [0.85 (45)m + (61)m] [(46)m + (57)m + (59)m] (65) 5. Internal gains Metabolic gains (Table 5) (66) Lighting gains (calculated in Appendix L, equation L9 or L9a), also see Table (67) Appliance gains (calculated in Appendix L, equation L13 or L13a), also see Table (68) Cooking gains (calculated in Appendix L, equation L15 or L15a), also see Table (69) Pump and fan gains (Table 5a) (70) Losses e.g. evaporation (Table 5) (71) Water heating gains (Table 5) (72) Total internal gains (66)m + (67)m + (68)m + (69)m + (70)m + (71)m + (72)m (73) 6. Solar gains Access factor Table 6d Area m² Solar flux W/m² g specific data or Table 6b FF specific data or Table 6c Gains W East 0.77 x 3.72 x x 0.9 x 0.42 x 0.80 = (76) West 0.77 x 5.96 x x 0.9 x 0.42 x 0.80 = (80) Solar gains in watts (74)m...(82)m (83) Total gains internal and solar (73)m + (83)m (84) 7. Mean internal temperature (heating season) Temperature during heating periods in the living area from Table 9, Th1( C) (85) Utilisation factor for gains for living area n1,m (see Table 9a) (86) Mean internal temp of living area T1 (steps 3 to 7 in Table 9c) (87) Temperature during heating periods in the rest of dwelling from Table 9, Th2( C) (88) Utilisation factor for gains for rest of dwelling n2,m (89) Mean internal temperature in the rest of dwelling T2 (follow steps 3 to 7 in Table 9c) (90) Living area fraction Living area (4) = 0.51 (91) Mean internal temperature for the whole dwelling fla x T1 +(1 fla) x T (92) Apply adjustment to the mean internal temperature from Table 4e where appropriate (93) 8. Space heating requirement Utilisation factor for gains, ƞm (94) Useful gains, ƞmgm, W (94)m x (84)m (95) Monthly average external temperature from Table U (96) Heat loss rate for mean internal temperature, Lm, W [(39)m x [(93)m (96)m] (97) Space heating requirement, kwh/month x [(97)m (95)m] x (41)m (98)1...5, = (98) Space heating requirement kwh/m²/year (98) (4) (99) 9b. Energy requirements - community heating scheme Fraction of space heat from secondary/supplementary system (table 11) '0' if none 0.00 (301) Fraction of space heat from community system 1 (301) = 1.00 (302) Fraction of community heat from CHP 0.00 (303a) Fraction of community heat from boilers 1.00 (303b) Fraction of total space heat from community CHP (302) x (303a) = 0.00 (304a) Fraction of total space heat from community boilers (302) x (303b) = 1.00 (304b) Factor for control and charging method (Table 4c(3)) for community space heating 1.00 (305) Factor for charging method (Table 4c(3)) for community water heating 1.00 (305a) Distribution loss factor (Table 12c) for community heating system 1.05 (306) Space heating Annual space heating requirement (98) Space heat from CHP (98) x (304a) x (305) x (306) = 0.00 (307a) Space heat from boilers (98) x (304b) x (305) x (306) = (307b) Water heating Page 3 URN: B11 1B Top NEW version 2 Page 4 URN: B11 1B Top NEW version 2

116 Annual water heating requirement (64) Water heat from boilers (64) x (303a) x (305a) x (306) = (310a) Electricity used for heat distribution 0.01 [(307a) (307e) + (310a) (310e)] = (313) Electricity for pumps, fans and electric keep hot (Table 4f) Total electricity for the above, kwh/year 0.00 (331) Electricity for lighting (Appendix L) (332) Total delivered energy for all uses (307) + (309) + (310) + (312) + (315) + (331) + (332)...(337b) = (338) 10b. Fuel costs - community heating scheme Fuel kwh/year Fuel price Fuel cost /year Space heating from CHP 0.00 x 2.97 x 0.01 = 0.00 (340a) Space heating from boilers x 4.24 x 0.01 = (340b) Water heating from boilers x 4.24 x 0.01 = (342a) Electricity for lighting x x 0.01 = (350) Additional standing charges (351) Total energy cost (340a)...(342e) + (345)...(354) = (355) 11b. SAP rating - community heating scheme Energy cost deflator (Table 12) 0.42 (356) Energy cost factor (ECF) 1.71 (357) SAP value SAP rating (section 13) 76 (358) SAP band C 12b. CO₂ emissions - community heating scheme Energy kwh/year Emission factor Emissions (kg/year) Emissions from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Emissions from other sources (space heating) Efficiency of boilers (367b) CO2 emissions from boilers [(307b)+(310b)] x 100 (367b) = x = (368) Electrical energy for community heat distribution x 0.52 = (372) Total CO2 associated with community systems (373) Total CO2 associated with space and water heating (376) Electricity for lighting x 0.52 = (379) Total CO₂, kg/year (376)..(382) = (383) Dwelling CO₂ emission rate (383) (4) = (384) EI value EI rating (section 14) 78 (385) EI band C 13b. Primary energy - community heating scheme Energy kwh/year Primary factor Primary energy (kwh/year) Primary Energy from community CHP (space and water heating) Power efficiency of CHP unit (361) Heat efficiency of CHP unit (362) Primary energy from other sources (space heating) Efficiency of boilers (367b) Primary energy from boilers [(307b)+(310b)] x 100 (367b) = x 1.22 = (368) Electrical energy for community heat distribution x 3.07 = (372) Total primary energy associated with community systems (373) Total primary energy associated with space and water heating (376) Electricity for lighting x 3.07 = (379) Primary energy kwh/year (383) Dwelling primary energy rate kwh/m2/year (384) Page 5 URN: B11 1B Top NEW version 2 Page 6 URN: B11 1B Top NEW version 2

117 Appendix E CHP Datasheets

118 New Build CHP Calculations BASELINE - WITHOUT CHP Delivered Energy (kwh/yr) CO2 (kg/kwh) CO2 (kg/yr) Efficiency End-Use Energy (kwh/yr) Gas Heating 464, , % 401,868 Electricity 320, , % 320,444 Total 722,312 CHP Contribution Conventional System 70% 30% CHP Efficiency Gas Boiler Efficiency Heat 39.1% Elec. 38.7% Heat to Power Ratio 1.01 WITH CHP End Use Energy kwh 86.5% Heating Efficiency (%) Delivered Energy kwh CO2 kg/kwh CO2 Associated with Heating Electricity Efficiency Electricity from CHP CO2 Associated with Electricity CHP Heating 281,307 39% 719, ,389 39% 278, ,653 Conventional Heating 120, % 139, ,105 Electricity 320, % 320, % 166,310 TOTALS 1,179, ,494 21,657 TOTAL CO2 207,200 Be Clean - Whole Development Be Lean Emissions (kg/yr) Be Clean Emissions: CHP (kg/yr Reduction (kg/yr) Reduction Regulated CO2 (kg/yr) Total CO2 (kg/yr) 147, ,100 85, ,200 61,900 61, % 23%

119 CHP Calculations for Refurbished Elements BASELINE - WITHOUT CHP Delivered Energy (kwh/yr) CO2 (kg/kwh) CO2 (kg/yr) Efficiency End-Use Energy (kwh/yr) Gas Heating 881, , % 762,080 Electricity 235, , % 235,989 Total 998,069 CHP Contribution Conventional System 70% 30% CHP Efficiency Gas Boiler Efficiency Heat 39.1% Elec. 38.7% Heat to Power Ratio 1.01 WITH CHP 86.5% End Use Energy kwh Heating Efficiency (%) Delivered Energy kwh CO2 kg/kwh CO2 Associated with Heating Electricity Efficiency Electricity from CHP CO2 Associated with Electricity CHP Heating 533,456 39% 1,364, ,671 39% 528, ,312 Conventional Heating 228, % 264, ,090 Electricity 235, % 235, % 122,478 TOTALS 1,864, , ,833 TOTAL CO2 199,900 Be Clean - Whole Development Regulated CO2 (kg/yr) Total CO2 (kg/yr) Be Lean Emissions (kg/yr) 238, ,200 Be Clean Emissions: CHP (kg/yr) 112, ,900 Reduction (kg/yr) 125, ,300 Reduction 52.6% 39%

120 CHP Calculations for Additional Storey to Building 11 BASELINE - WITHOUT CHP Delivered Energy (kwh/yr) CO2 (kg/kwh) CO2 (kg/yr) Efficiency End-Use Energy (kwh/yr) Gas Heating 26, , % 22,600 Electricity 6, , % 6,215 Total 28,815 CHP Contribution Conventional System 70% 30% CHP Efficiency Gas Boiler Efficiency Heat 39.1% Elec. 38.7% Heat to Power Ratio 1.01 WITH CHP 86.5% End Use Energy kwh Heating Efficiency (%) Delivered Energy kwh CO2 kg/kwh CO2 Associated with Heating Electricity Efficiency Electricity from CHP CO2 Associated with Electricity CHP Heating 15,820 39% 40, ,738 39% 15,674-8,135 Conventional Heating 6, % 7, ,693 Electricity 6, % 6, % 3,226 TOTALS 54,509 10,431-4,909 TOTAL CO2 5,500 Be Clean - Whole Development Regulated CO2 (kg/yr) Total CO2 (kg/yr) Be Lean Emissions (kg/yr) 6,200 8,900 Be Clean Emissions: CHP (kg/yr) 2,800 5,500 Reduction (kg/yr) 3,400 3,400 Reduction 54.8% 38%

121 Energy Statement Appendix F APPENDIX F: LOW CARBON AND RENEWABLE ENERGY TECHNOLOGIES 1

122 1. INTRODUCTION > This Appendix is intended to provide the background information for the low carbon and renewable energy technologies that have been considered in the formulation of this Energy Statement. > The information provided here forms the basis for the project specific technical selection of low carbon/renewable energy technologies contained in the main section of this Energy Statement. 2

123 Energy Statement Appendix F 2. COMBINED HEAT AND POWER (CHP) > CHP is a form of decentralised energy generation that generally uses gas to generate electricity for local consumption, reducing the need for grid electricity and its associated high CO 2 emissions. As the CHP system is close to the point of energy demand, it is possible to use the heat that is generated during the electricity generation process. As both the electricity and heat from the generator is used, the efficiency of the system is increased above that of a conventional power plant where the heat is not utilised. Diagram 1 CHP Diagram > However, the overall efficiency of ~80% is still lower than the ~90% efficiency of a heat only gas boiler. > Where there are high thermal loads, CHP can be used within district heating networks to supply the required heat. > Performance and Calculation Methodology: - > Most commonly sized on the heat load of a development, not the electrical load. This prevents an over-generation of heat. > Require a high and relatively constant heat demand to be viable. > CHP engines are best suited to providing the base heating load of a development (~year round hot water demand) with conventional gas boilers responding to the peak heating demand (~winter space heating). CHP engines are not able to effectively respond to peaks in demand. 3

124 > Capital Cost: - > In general, CHP engines have an electrical efficiency of ~30% and a thermal efficiency of ~45%. Larger engines have a better heat to power ratio and are therefore able to reduce CO 2 emissions by greater amount. > Electricity produced by the CHP engine displaces grid electricity which is given a carbon intensity of kg per kwh. > Around 1,000 per kw of electrical output. > Relative cost reduces as the size of engine increases. > Generally best suited to larger sites, where there is a suitable economy of scale. > Running Costs/Savings: - > CHP engines often struggle to provide cost-effective energy to dwellings on smaller residential schemes compared to conventional individual gas boilers. > Onsite use of CHP generated electricity; power Purchase Agreement with electricity Supply Company or Private Wire arrangement to local large nondomestic demand enhances economic case. > Land Use Issues and Space Required: - > CHP engines require a plant room, and possibly an energy centre for large residential developments. > CHP engines require a flue to effectively disperse pollutants. This is best to rise to a minimum of 2m above the roofline of the tallest building. > Route for district heating pipe around the site must be safeguarded. > Operational Impacts/Issues: - > Often run by Energy Services Company (ESCo) who maybe unenthusiastic about getting involved in small medium scale schemes. > Can also be run in-house with specialist maintenance and customer services activities contracted out. > Issues with rights to dig up roads for district heating networks. > Emissions of oxides of nitrogen ~500mg/kWh 10 times higher than for a gas boiler. Specialist technologies exist (e.g. selective catalytic reduction) to reduce this to ~20mg/kWh if air quality issues require. > Embodied Energy: - Comparable to that of a conventional gas boiler. > Funding Opportunities: - > Tax relief for businesses under the Enhanced Capital Allowances scheme.. > Reductions in Energy Achievable: - Can provide some reductions in effective primary energy, but when distribution losses and other local losses are included more fuel is required. 4

125 Energy Statement Appendix F > Reductions in CO 2 Achievable: - Can provide greater reductions in CO 2 than energy, aided by the emissions factor of grid displaced electricity of kg CO 2/kWh. CO 2 reduction increase as size of engine increases. > Advantages: - > Disadvantages: - > Good reductions in overall primary energy and CO 2 emissions. > Most cost effective and appropriate strategy to achieve substantial CO 2 reductions on large schemes. > On smaller schemes often do not supply energy cost-effectively in comparison to conventional individual gas boilers. > Requires sale of generated electricity to maximise cost effectiveness. Application: - Best suited to larger developments. 3. COMBINED COOLING HEAT AND POWER (CCHP) > CCHP is a CHP system which additionally has the facility to transform heat into energy for cooling. This is done with an absorption chiller which utilises a heat source to provide the energy needed to drive a cooling system. As absorption chillers are far less efficient than conventional coolers (CoP of 0.7 compared to >4) they are generally only used where there is a current excess generation of heat. New CHP systems are generally sized to provide the year round base heating load only. > For this reason it is generally not suitable for new CHP systems to include cooling. > Where there are high thermal loads, CCHP can be used within district heating and cooling networks to supply the required heat and coolth. > Performance and Calculation Methodology: - > Most commonly sized on the heat load of a development, not the electrical load. This prevents an over-generation of heat. > Require a high and relatively constant heat and cooling demand to be viable. > CCHP systems are best suited to providing the base loads of a development with conventional gas boilers and chillers responding to the peak demands. CCHP systems are not able to effectively respond to peaks in demand. 5

126 > In general, CHP engines have an electrical efficiency of ~30% and a thermal efficiency of ~45%. > Absorption chillers have a CoP of ~0.7. > Electricity produced by the CHP engine displaces grid electricity which is given a carbon intensity of kg per kwh. > Capital Cost: - > High in comparison to biomass boilers and increased further by inclusion of absorption chiller. > Running Costs/Savings: - > Coolth from absorption chillers is more expensive than from conventional systems unless heat used id genuine waste heat. > Land Use Issues and Space Required: - > CCHP systems require a plant room, and possibly an energy centre for large residential developments. > CHP engines require a flue to effectively disperse pollutants. This is best to rise to a minimum of 2m above the roofline of the tallest building. Additionally the absorption chiller requires either a cooling tower or dry cooler bed for heat rejection purposes. > Heating and cooling distribution pipework required around the site. > Operational Impacts/Issues: - > Often run by an ESCo who are unenthusiastic about getting involved in small medium scale schemes. > Can also be run in-house with specialist maintenance and customer services activities contracted out. > Issues with rights to dig up roads for heat networks. > Emissions of oxides of nitrogen ~500mg/kWh 10 times higher than for gas boilers. Specialist technologies exist (e.g. selective catalytic reduction) to reduce this ~20mg/kWh if air quality issues require. > Rejection of heat is higher than for conventional cooling, thus enforcing the urban heat island effect. > Embodied Energy: - Comparable to conventional gas boilers. > Funding Opportunities: - > Tax relief for businesses under Enhanced Capital Allowance scheme. > Reductions in Energy Achievable: - Absorption cooling generally requires more energy than conventional chillers. 6

127 Energy Statement Appendix F > Reductions in CO 2 Achievable: - Can provide greater reductions in CO 2 than energy, aided by the emissions factor of grid displaced electricity of kg CO 2/kWh. > Advantages: - > Reasonable reductions in overall primary energy and CO 2 emissions. > Disadvantages: - More expensive to install than conventional chillers. > Operational costs higher than for conventional chillers. > Application: - Best suited where there is genuine waste heat available. 4. BIOMASS BOILERS > Biomass boilers generate heat on a renewable basis as they are run on biomass fuel which is almost carbon neutral. Fuel is generally wood chip or wood pellets. Wood pellets are slightly more expensive than wood chips but have a significantly higher calorific value and enable greater automation of the system. > Various other suitable fuels are available including organic materials including straw, dedicated energy crops, sewage sludge and animal litter. Each fuel tends to have its own advantages dependant on site requirements. > Can be used with district heating networks or as individual boilers on a house-byhouse basis. > Performance and Calculation Methodology: - > Biomass boilers are best suited to providing the base heating load of a development (~year round hot water demand) with conventional gas boilers responding to the peak heating demand (~winter space heating). > Operate with an efficiency of around 90%. > Small models available. > Conflicts with CHP they are both best suited to providing the base heating load of a development. As such they should not be installed in tandem unless surplus hot water capacity is available. Special control measures would be required in this case. > Capital Cost: - > Low in comparison to CHP. > More suitable to smaller developments than CHP as installed cost is lower. 7

128 > Running Costs/Savings: - > Biomass fuel is more expensive than gas and as such heat being provided to dwellings is generally more expensive than alternatives. > Land Use Issues and Space Required: - > Biomass boilers require a plant room and possibly separate energy centre for large residential developments. > Require a flue to effectively disperse pollutants. This is best to rise to a minimum of 2m above the roofline of the tallest building. Additionally the absorption chiller requires either a cooling tower or dry cooler bed for heat rejection purposes. > Fuel store will be required. This should be maximised to reduce fuel delivery frequency. > Space must be available for delivery vehicle to park close to plant room. > Route for district heating pipe around the site must be safeguarded. > Operational Impacts/Issues: - > Normally run on biomass, but can also work with biogas. > Require some operational support and maintenance. > Fuel deliveries required. > Boiler and fuel store must be sited in proximity to space for delivery vehicle to park. > Issues with rights to dig up roads, etc (for heat networks). > Emissions of oxides of nitrogen ~80-100mg/kWh. > Emissions of particulate matter. To minimise this ceramic filter systems are required. > Embodied Energy: - Comparable to conventional gas boiler. > Funding Opportunities: - > Renewable Heat Incentive (RHI) provides incentive funds to developers of small or medium installations with a reasonable heat load that meet a minimum energy efficiency standard & meet the RHI eligibility criteria. > Reductions in Energy Achievable: - No reduction in energy demand, but energy generated from a renewable fuel. Significant long term running costs (fuel). > Reductions in CO 2 Achievable: - Can provide significant reductions in CO 2, but generally limited by the hot water load (base heating load). > Advantages: - Reductions in CO 2 at low installed cost. 8

129 Energy Statement Appendix F > Disadvantages: - > High long-term running costs, unless receiving RHI. > Often do not supply energy cost-effectively in comparison to gas boilers. 5. SOLAR THERMAL PANELS > Solar Thermal Heating Systems contribute to the hot water demand of a dwelling or building. Water or glycol (heat transfer fluid) is circulated to roof level where it is heated using solar energy before being returned to a thermal store in the plant room where heat is exchanged with water from the conventional system. Due to the seasonal availability of heat, solar thermal panels should be scaled to provide no more than 1/2 of the hot water load. Diagram 2 Solar Thermal System > Can also be used to provide energy for space heating in highly insulated dwellings. > There are two types of solar thermal panel: evacuated tube collectors and flat plate collectors. > Performance and Calculation Methodology: - > Evacuated Tube Collectors: ~60% efficiency. > Flat Plate Collectors: ~50% efficiency. > SAP Table H2 used for solar irradiation at different angles. 9

130 > Operate best on south facing roofs angled at and free of shading, or on flat roofs on frames. East/West facing panels suffer a loss in performance of 15-20% depending on the angle of installation. > Flat plate collectors cannot be installed horizontally as this would prevent operation of the water pump. Must therefore be angled and separated to avoid overshadowing each other. > Capital Cost: - Typically 2,500 per 4m 2 plus installation. Costs higher for evacuated tubes than flat plate collectors. > Running Costs/Savings: - > Reduce reliance on gas and therefore reduce costs. > Payback period of ~20 years per dwelling. > Land Use Issues and Space Required: - > Installed on roof so no impact on land use. > Requires hot water cylinders in dwellings. > Due to amount of roof space required and distance from tank to panels, less suitable for dense developments of relatively high rise flats. > Within permitted development rights unless in a conservation area where they must not be visible from the public highways. > Dormer and Velux windows may conflict if energy/co 2 reduction required is large. > Operational Impacts/Issues: - Biggest reductions achieved by people who operate their hot water system with consideration of the panels. > Embodied Energy: - Carbon payback is ~2 years. > Funding Opportunities: - none > Reductions in Energy Achievable: - Reduce primary energy demand by more per standard panel area than solar PV panels. > Reductions in CO 2 Achievable: - Comparable to solar PV per m 2. > Advantages: - Virtually free fuel, low maintenance and reductions in energy/co 2. > Disadvantages: - Benefits limited to maximum ~50% of hot water load. > Higher Costs in comparison to PV > Application: - Best suited for small to medium housing developments ~

131 Energy Statement Appendix F 6. SOLAR PHOTOVOLTAIC (PV) PANELS > Solar PV panels generate electricity by harnessing the power of the sun. They convert solar radiation into electricity which can be used on site or exported to the grid in times of excess generation. > Performance and Calculation Methodology: - > The best PV panels operate with an efficiency approaching 20%. ~7m 2 of these high performance panels will produce 1kWp of electricity. > Operate best on south facing roofs angled at or on flat roofs on frames. Panels orientated east/west suffer from a loss in performance of 15-20% depending on the angle of installation. > Must be free of any potential shading. > Cannot be installed horizontally as would prevent self-cleaning. Must therefore be angled and separated to avoid overshadowing each other. > Electricity produced displaces grid electricity which has a carbon intensity of kg CO 2 per kwh. > Capital Cost: - ~ 2,000 per kwp. > Running Costs/Savings: - > Reduce reliance on grid electricity and therefore reduce running costs. > At current electricity prices, payback period of ~60-70 years per dwelling. > Feed-in tariff and Renewables Obligation Certificates (ROCs) payments required for maximum financial benefit. > Land Use Issues and Space Required: - > Installed on roof so no impact on land use. > Due to amount of roof space required are less suitable for dense developments of relatively high rise flats. > Within permitted development rights unless in a conservation area where they must not be visible from the public highways. > Dormer and Velux windows may conflict if energy/co 2 reduction required is large. > Operational Impacts/Issues: - > Proportionately large arrays may need electrical infrastructure upgrade. 11

132 > Virtually maintenance free and panels are self-cleaning at angles in excess of 10 degrees. > Provision for access to solar panels installed on flat roofs needs to be incorporated into the design of PV arrays layout as well as inclusion of spaces for inverters within the development. > Quality of PV panels varies dramatically. > Embodied Energy: - Carbon payback of 2-5 years. > Funding Opportunities: - Financier utilising Feed-in-Tariffs. > Reductions in Energy Achievable: - Reduce energy demand by less per m 2 than solar thermal panels. > Reductions in CO 2 Achievable: - Provide greater percentage reductions in CO 2 than energy. Comparable to solar thermal per square metre. > Advantages: - Virtually free fuel, very low maintenance and good reductions in CO 2. > Cheaper in comparison to solar thermal panels. > Disadvantages: - > Slightly greater loss in performance than solar thermal panels when orientated away from south. > Application: Best suited for a variety of developments from single houses to multi apartment blocks and even whole estates. 7. GROUND SOURCE HEAT PUMPS (GSHPS) > Ground Source Heat Pumps work in much the same way as a refrigerator, converting low grade heat from a large reservoir into higher temperature heat for input in a smaller space. Electricity drives the pump which circulates a fluid (water/antifreeze mix or refrigerant) through a closed loop of underground pipe. This fluid absorbs the solar Diagram 3 Ground Source Heat Pump 12

133 Energy Statement Appendix F energy that is stored in the earth (which in the UK remains at a near constant temperature of 12oC throughout the year) and carries it to a pump. A compressor in the heat pump upgrades the temperature of the fluid which can then be used for space heating and hot water. > Performance and Calculation Methodology: - > System requires electricity to drive the pump. Therefore displaces gas heating with electric, which has higher carbon intensity (gas: 0.216; electricity: 0.519). > As they are upgrading heat energy from the earth, GSHPs operate at efficiencies in excess of 350%. This is limited in SAP unless Appendix Q rated model used. > Due to the lower temperature of the output of GSHPs compared to traditional gas boilers, GSHPs work best in well insulated buildings and with underfloor heating. They can, however, also be installed with oversized radiators, albeit with a consequent reduction in performance. > Capital Cost: - ~ 7,500 per house. Additional costs if underfloor heating is to be installed. > Running Costs/Savings: - > Electricity more expensive than gas, thus fuel costs not reduced as much as energy is reduced. > Payback period of ~20 years per dwelling. > Land Use Issues and Space Required: - > Require extensive ground works to bury the coils that extract the low grade heat from the earth. They therefore require a large area for horizontal burial (40-100m long trench) or a vertical bore (50-100m) which is considerably more expensive but can be used where space is limited. > Best suited to new developments that have provision for large ground works already in place, to minimise ground work costs. > Must be sized correctly to prevent freezing of the ground during winter and consequent shutdown of the system. > May require planning permission for engineering works. Once buried, there is no external evidence of the GSHPs. > Operational Impacts/Issues: - > Work best in well insulated houses. > Need immersion backup for hot water. 13

134 > Highly reliable and require virtually no maintenance. > Problems if ground bore fails. > Embodied Energy: - Low, but as gas is being replaced with the more carbon intensive electricity, carbon payback is slowed. Carbon payback depends on CoP. > Funding Opportunities: - Renewable Heat Incentive (RHI) provides incentive funds to developers of small or medium installations with a reasonable heat load that meet a minimum energy efficiency standard & meet the RHI eligibility criteria. > Reductions in Energy Achievable: - Reduce energy demand by less per m 2 than solar thermal panels. > Reductions in CO 2 Achievable: - Provide greater %age reductions in CO 2 than energy. Comparable to solar thermal (esp. in SAP). > Advantages: - Large reductions in Energy. Currently receives benefit from SAP of an electrical baseline rather than gas. > Disadvantages: - > Small reduction in CO 2. CoP limited in SAP. Only small cost savings. > GSHPs are not entirely a renewable technology as they require electricity to drive their pumps or compressors. > Application: - Best suited for small to medium developments ~ AIR SOURCE HEAT PUMPS (ASHPS) > Air Source Heat Pumps work in much the same way as a refrigerator, converting low grade heat from a large reservoir into higher temperature heat for input into a smaller space. Electricity drives the pump which extracts heat from the air as it flows over the coils in the heat pump unit. A compressor in the heat pump upgrades the temperature of the extracted energy which can then be used for space heating and hot water. Diagram 4 Air Source Heat Pump 14

135 Energy Statement Appendix F > Generally ASHPs are air-to-water devices but can also be air-to-air. > Performance and Calculation Methodology: - > System requires electricity to drive the pump. Therefore displaces gas heating with electric, which has higher carbon intensity (gas: 0.216; electricity: 0.519). > Performance defined by the Coefficient of Performance (CoP) which is a measure of electricity input to heat output. However, the concept of a CoP must be treated with caution as it is an instantaneous measurement and does not take account of varying external conditions throughout the year. > As they are upgrading heat energy from the air, ASHPs operate at efficiencies in excess of 250%. This is limited in SAP unless an Appendix Q rated model is used. > British winter conditions (low temperatures and high humidity) lead to freezing of external unit. Reverse cycling defrosts the ASHP, but can substantially reduce performance when it is most needed. Performance under these conditions varies considerably between models. Vital that ASHP that has been proven in British winter conditions is installed. > Due to the lower temperature of the output of ASHPs compared to traditional gas boilers, ASHPs work best in well insulated buildings and with underfloor heating. They can, however, also be installed with oversized radiators, albeit with a consequent reduction in performance. > Capital Cost: - ~ 2,000 per house. > Running Costs/Savings: - > Electricity more expensive than gas, thus fuel costs not reduced as much as energy is reduced. > Payback period of ~10 years per dwelling. > Land Use Issues and Space Required: - > No need for external ground works, only a heat pump unit for the air to pass through. > Minimal external visual evidence. > Operational Impacts/Issues: - > Work best in well insulated houses. > Unit must be sized correctly for each dwelling. > Vital that ASHP model selected has been proven to maintain performance at the low temperature and high humidity conditions of the British winter. 15

136 > May need immersion backup for hot water. > Highly reliable and require virtually no maintenance. > Noise from ASHPs must be below 42 db at a position one metre external to the centre point of any door or window in a habitable room. According to planning standards MCS020. > Embodied Energy: - Low. Carbon payback longer than for GSHPs as the CoP is lower. > Funding Opportunities: - Renewable Heat Incentive (RHI) provides incentive funds to developers of small or medium installations with a reasonable heat load that meet a minimum energy efficiency standard & meet the RHI eligibility criteria. > Reductions in Energy Achievable: - Large reductions in energy demand. Less so than GSHPs. > Reductions in CO 2 Achievable: - Provide smaller percentage reductions in CO 2 than energy. Less than GSHPs. > Advantages: - Large reductions in Energy. Currently receives benefit from SAP of an electrical fuel factor rather than a gas baseline. > Disadvantages: - > Small reduction in CO 2 CoP limited in SAP. Only small cost savings. > ASHPs are not entirely a renewable technology as they require electricity to drive their pumps or compressors. > Application: - Best suited for small to medium developments ~ WIND POWER > Wind energy installations can range from small domestic turbines (1kW) to large commercial turbines (140m tall, 2MW). There are also different designs and styles (horizontal or vertical axis; 1 blade to multiple blades) to suit the location. They generate clean electricity that can be provided for use on-site, or sold directly to the local electricity network > Performance and Calculation Methodology: - > Power generated is proportional to the cube of the wind speed. Therefore, wind speed is critical. > Horizontal axis turbines require >~6m/s to operate effectively and vertical axis turbines require >~4.5m/s. The rated power of a turbine is often for wind speeds double these figures. > Wind speeds for area from BERR s Wind Speed Database. > Electricity produced displaces grid electricity which has a carbon intensity of kg/kwh. 16

137 Energy Statement Appendix F > Capital Cost: - > ~ 1,000 per kw. Smaller models are more expensive per kw. > Vertical axis turbines more expensive than horizontal. > Running Costs/Savings: - > Reduce reliance on grid electricity and therefore reduce costs. > Payback period of ~15-20 years per dwelling. > Feed-in tariff and ROC payments required for maximum financial benefit. > Land Use Issues and Space Required: - > Smaller models (<6kW) can be roof mounted. > Must be higher than surrounding structures/trees. > Planning permission required. > Operational Impacts/Issues: - > Urban environments generally have low wind speeds and high turbulence which reduce the effectiveness of turbines. > Vertical axis turbines have a lower performance than horizontal axis turbines but work better in urban environments. > Annual services required. > Turbines rated in excess of 5kW may require the network to be strengthened and arrangements to be made with the local Distribution Network Operator and electricity supplier. > Noise. > Embodied Energy: - Carbon payback is ~1 year for most turbines. > Funding Opportunities: - Financier utilising Feed-in-Tariffs. > Reductions in Energy Achievable: - Significant reduction in reliance on grid electricity. > Reductions in CO 2 Achievable: - Good. Greater reduction in CO 2 than PV for same investment. > Advantages: - Virtually free fuel; reductions in CO 2. > Disadvantages: - > Expensive, although cheaper than PV for same return. > Lack of suitable sites. 17

138 > Maintenance costs. > Often not building integrated. > Application: Best suited for small to large developments in rural open areas 10. HYDRO POWER > Hydro power harnesses the energy of falling water, converting the potential or kinetic energy of water into electricity through use of a hydro turbine. Micro hydro schemes (<100kW) tend to be run-of-river developments, taking the flow of the river that is available at any given time and not relying on a reservoir of stored water. They generate clean electricity that can be provided for use on-site, or sold directly to the local electricity network. > Performance and Calculation Methodology: - > Flow rates at particular sites from National River Flow Archive held by Centre for Ecology and Hydrology. > Electricity produced displaces grid electricity which has a carbon intensity of kg/kwh. > Capital Cost: - > 3,000-5,000 per kw. > Particularly cost effective on sites of old water mills where much of the infrastructure is in place. > Running Costs/Savings: - > Reduce reliance on grid electricity and therefore reduce costs. > Payback period of ~10-15 years per dwelling > Feed-in tariff and ROC payments required for maximum financial benefit. > Land Use Issues and Space Required: - > Require suitable water resource. > Visual intrusion of scheme. > Special requirements where river populated by migrating species of fish. > Planning permission will require various consents and licences including an Environmental Statement and Abstraction Licence. > Operational Impacts/Issues: - > Routine inspections and annual service required. > Automatic cleaners should be installed to prevent intake of rubbish. > Embodied Energy: - Carbon payback for small schemes of ~1 year. 18

139 Energy Statement Appendix F > Funding Opportunities: - Financier utilising Feed-in-Tariffs. > Reductions in Energy Achievable: - significant reduction in reliance on grid electricity. > Reductions in CO 2 Achievable: - High. > Advantages: - Virtually free fuel, reductions in CO 2. > Disadvantages: - > Expensive, but good payback period. > Lack of suitable sites. > Planning obstructions. > Application: - Best suited to medium to larger developments in rural places ~ 100+ units 19

140 Appendix G Low Carbon & Renewable Energy Technology Feasibility Table

141 Appendix G - Low Carbon and Renewable Energy Technology Feasibility Study Feasibility Study Table Sufficient Technology Energy Generated? Payback Land Use Issues Local Planning Requirements Noise Carbon Payback Available Grants Feasible? Reason not Feasible or Selected Combined Heat & Power (CHP) Yes Medium Air quality in residential area Emphasis on district heating In Plant Room Yes Tax Relief - ECA, RHI Yes CHP network already in operation Biomass Yes None Air quality in residential area Encouraged for large scale developments In Plant Room Yes RHI; Bio-energy Capital Grants Scheme No Same reason as CHP Solar Thermal Yes High Solar Photovoltaic (PV) Yes Very High Sufficient roof space required Sufficient roof space required Encouraged None ~2 years RHI No Conflicts with CHP Encouraged None 2-5 years FiT Yes Policy requirements already met Ground Source Heat Pumps (GSHPs) Yes High Requires large area for coils or borehole Encouraged None Low RHI No High cost associated with ground excavations Air Source Heat Pumps (ASHPs) Yes Very High Visual intrusion of external units None Low Low RHI Yes In use in New Build commercial units Wind Power No Low Hydro Power No Medium Urban Area - low and turbulent wind; Visual impact Requires suitable water resource; Visual impact Encouraged for large scale developments Yes ~1 year FiT No Wind speeds in area insufficient None Low ~1 year FiT No No River RHI - Renewable Heat Incentive FiT - Feed in Tariff

142 Appendix H Overheating Assessment

143 Dynamic Overheating Assessment Berkeley Homes (East Thames) Ltd Buildings 10, 11 & Royal Carriage Square Final Author: Olga Tsagkalidou Dip Arch, MSc, ARB Date: July

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145 RAR Buildings 10, 11 & Royal Carriage Square Berkeley Homes (East Thames) Ltd Dynamic Overheating Assessment Date: July 2016 DOCUMENT CONTROL RECORD REPORT STATUS: FINAL Version Date Reason for issue Author Project Manager Checked by v Draft O Tsagkalidou D Sinclair D Sinclair v Final Draft O Tsagkalidou D Sinclair D Sinclair v Final O Tsagkalidou D Sinclair ABOUT HODKINSON CONSULTANCY Our team of technical specialists offer advanced levels of expertise and experience to our clients. We have a wide experience of the construction and development industry and tailor teams to suit each individual project. We are able to advise at all stages of projects from planning applications to handover. Our emphasis is to provide innovative and cost effective solutions that respond to increasing demands for quality and construction efficiency. This report has been prepared by Hodkinson Consultancy using all reasonable skill, care and diligence and using evidence supplied by the design team, client and where relevant through desktop research. Hodkinson Consultancy can accept no responsibility for misinformation or inaccurate information supplied by any third party as part of this assessment. This report may not be copied or reproduced in whole or in part for any purpose, without the agreed permission of Hodkinson Consultancy of Harrow, London. 1

146 Executive Summary This report details the methodology and findings of a study into the overheating risk of four dwellings in the proposed Heritage Buildings 10/Royal Carriage Factory and 11/Officers House at Royal Arsenal site, located in Woolwich in the Royal Borough of Greenwich. The analysis undertaken has used dynamic thermal modelling. Four units, two in Building 10/Royal Carriage Factory and two in Building 11/Officers House, have been selected based on the below design characteristics, and are deemed representative of the design scheme as a whole: /Officers House > Dwellings with large glazed areas; > Single aspect dwellings lacking cross ventilation; > Dwellings with east and west facing windows lacking external shading; > Dwellings located in both buildings at different floor levels. The analysis undertaken has investigated the potential of overheating risk within the dwellings under current and future climate change scenarios. Assessment Criteria The performance of the units has been assessed under the following overheating criteria: With windows open (naturally ventilated dwelling): CIBSE TM52 adaptive comfort model used. Weather Data & Climate Change Representative units have been modelled against a range of weather data to assess performance in both current and predicted future climates. CIBSE TM49 weather data for London Heathrow Airport (representative of lower density urban and suburban areas outside the Central Activity Zone) has been used for all scenarios assessed Overheating modelling has been conducted using three design weather years and one future weather scenario: 1976 design weather year: a year with a prolonged period of sustained warmth; 1989 design weather year: a moderately warm summer (current design year for London); 2

147 RAR Buildings 10, 11 & Royal Carriage Square Berkeley Homes (East Thames) Ltd Dynamic Overheating Assessment Date: July design weather year: a year with a very intense single warm spell; Future weather data: 2050 s high emissions scenario. As the UKCP09 predictions are probabilistic, data for the 50% percentile change likelihood (encompassing 50% of the projected changes to climate) has been used to represent the middle or best guess range of possible changes to weather conditions. Local Shading and Cross-ventilation The scheme has been designed by the architects to incorporate effective passive overheating mitigation measures, which are outlined below: Results > Dual aspects units in both buildings represent the majority of the unit-mix and enhance the possibility of good passive cross-ventilation; > The external metal grid of balconies on the south elevation of Building 10 represents an effective way of providing shading and reducing the solar radiation received by the apartments during summer months; > Balconies are also introduced on the front elevation of the new Building 11 providing external shading. Building 10 / Royal Carriage Factory Units demonstrate an acceptable level of overheating against the TM52 criteria for all three baseline current weather data scenarios. This is based on some key design features: > Openable windows to provide natural ventilation during occupied hours; > Continuous mechanical ventilation to achieve Part F flow rates; > Solar control glazing with a g-value of 0.42 for the top-floor apartments. A g-value of 0.60 is sufficient for the mid-floor apartments. Building 11 / Officers House Units demonstrate an acceptable level of overheating against the TM52 criteria for all three baseline current weather data scenarios. This is based on some key design features: > Openable windows to provide natural ventilation during occupied hours; > Continuous mechanical ventilation to achieve Part F flow rates; 3

148 > Solar control glazing with a g-value of 0.50 for the new building s apartment. A g-value of 0.42 for the top-floor roof apartments of the listed building. For the future 2050 s high emissions scenario TM52 criterion 1 and 2 are not met in some key habitable rooms. As two of the three criteria are not met for this scenario, an overheating risk is deemed present. In order to demonstrate compliance with the CIBSE criteria, further mitigation measures could be incorporated at a future date should it be required: Building 10 / Royal Carriage Factory > Replacement of current glazing. A g-value of 0.28 should be applied on the top-floor units and a g-value of 0.50 should be used for the mid-floor ones. Building 11 / Officers House > Replacement of current glazing. A g-value of 0.28 should be applied on the top-floor roof units of the listed building and a g-value of 0.35 should be used for the new building; > Internal blinds should be applied in all habitable rooms on the front elevations of the new building and the front elevation on the top-floor of the listed building. 4

149 RAR Buildings 10, 11 & Royal Carriage Square Berkeley Homes (East Thames) Ltd Dynamic Overheating Assessment Date: July 2016 CONTENTS Executive Summary 2 1. INTRODUCTION 6 2. REQUIRED STANDARDS 7 3. MODELLING APPROACH SUMMARY OF RESULTS DISCUSSION FUTURE CLIMATE SCENARIO CONCLUSION 27 5

150 1. INTRODUCTION Site & Context 1.1 This dynamic overheating assessment has been completed by Hodkinson Consultancy, a specialist energy and environmental consultancy, for the mixed-use residential led Heritage Building 10/Royal Carriage Factory and Building 11/Officers House development proposal on the Royal Arsenal site, located in Woolwich within The Royal Borough of Greenwich. 1.2 The two buildings are part of the Royal Arsenal Masterplan developed to deliver a new urban quarter, known as Royal Arsenal Riverside, with nearly 5,000 homes and supporting facilities such as museums, cafes, bars, restaurants, offices, shops, urban plazas etc. (Figure 1). This application is a new full application outside the remit of the masterplan consent. 1.3 Listed Building 11/Officers House and Building 10/Royal Carriage Factory sit adjacent to each other within the centre of the Royal Arsenal. The site is well served by public transport connections with bus and rail links. This application put forward a Full Planning Permission and Listed Building Consent for the change of use and redevelopment of two Grade II Listed Buildings to provide a residential led mixed-use development comprising 146 residential units with refuse/recycling and cycle parking, 2,150sqm commercial uses and a public square. Figure 1: Site Location (Source: Google Maps) 6

151 RAR Buildings 10, 11 & Royal Carriage Square Berkeley Homes (East Thames) Ltd Dynamic Overheating Assessment Date: July 2016 Overheating & Thermal Comfort 1.1 Maintaining thermal comfort conditions in the face of increased temperatures is one of the biggest challenges now facing designers of buildings in the UK. A particular concern will be to achieve thermal comfort without recourse to conventional air-conditioning systems, where typical technologies involve the emission of greenhouse gases. 1.2 A dynamic assessment has been undertaken to determine if dwellings within the development are at risk of overheating under current and future climate conditions spanning the anticipated lifetime of the building. 1.3 Dynamic thermal simulations (using Design Builder Software, DBS) have been carried out for four dwelling types that are considered to have higher risks of overheating. These have been modelled to assess their potential for overheating and to determine appropriate mitigation measures to minimise this risk. 2. REQUIRED STANDARDS Regional Policy: London Plan 2.1 The London Plan (2015) sets out an integrated framework for the development of London over the next years. On 10 March 2015, the Mayor adopted the Further Alterations to the London Plan (FALP). From this date, the FALP are operative as formal alterations to the London Plan and form part of the development plan for Greater London. 2.2 Policy 5.9 Overheating And Cooling in the London Plan outlines key policies relevant to the Proposed Development and this Overheating Assessment: Strategic A) The Mayor seeks to reduce the impact of the urban heat island effect in London and encourages the design of places and spaces to avoid overheating and excessive heat generation, and to reduce overheating due to the impacts of climate change and the urban heat island effect on an area wide basis. Planning decisions B) Major development proposals should reduce potential overheating and reliance on air conditioning systems and demonstrate this in accordance with the following cooling hierarchy: 1. Minimise internal heat generation through energy efficient design; 7

152 2. Reduce the amount of heat entering a building in summer through orientation, shading, albedo, fenestration, insulation and green roofs and walls; 3. Manage the heat within the building through exposed internal thermal mass and high ceilings; 4. Passive ventilation; 5. Mechanical ventilation; 6. Active cooling systems (ensuring they are the lowest carbon options). C) Major development proposals should demonstrate how the design, materials, construction and operation of the development would minimise overheating and also meet its cooling needs. New development in London should also be designed to avoid the need for energy intensive air conditioning systems as much as possible. Further details and guidance regarding overheating and cooling are outlined in the London Climate Change Adaptation Strategy. LDF preparation D) Within LDFs boroughs should develop more detailed policies and proposals to support the avoidance of overheating and to support the cooling hierarchy. 2.3 Further guidance on overheating modelling is given in the Greater London Authority (GLA) s guidance on preparing energy assessments (March 2016). 2.4 It is expected that dynamic thermal modelling of the overheating risk will be undertaken to support the energy assessment, unless the applicant can demonstrate exceptional circumstances where opportunities for reducing cooling demands via passive measures are constrained. 2.5 The dynamic thermal modelling should be in addition to any assessment of overheating risk obtained from the Part L Building Regulation compliance tools SAP and SBEM. Evidence of how the development performs against the overheating criteria should be presented along with an outline of the assumptions made (e.g. around internal gains). 2.6 Where dynamic modelling is carried out, it should be undertaken in accordance with the guidance and data sets in TM49. As it is impossible to prejudge the impact of warm weather conditions on a building in a general sense, overheating modelling should be conducted using three design weather years: > 1976: a year with a prolonged period of sustained warmth; > 1989: a moderately warm summer (current design year for London); > 2003: a year with a very intense single warm spell. 8

153 RAR Buildings 10, 11 & Royal Carriage Square Berkeley Homes (East Thames) Ltd Dynamic Overheating Assessment Date: July To enable the urban heat island effect in the locality of the development to be taken into account, weather year data for three different locations are provided. The most representative weather data set for the project location should be used: > The Greater London Authority Central Activity Zone (CAZ) and other high density urban areas (e.g. Canary Wharf): London Weather Centre data; > Lower density urban and suburban areas: London Heathrow airport data; > Rural and peri-urban areas around the edge of London: Gatwick Airport data. 2.8 CIBSE guide TM52 contains additional guidance on the limits of thermal comfort. Entitled The Limits of Thermal Comfort: Avoiding Overheating in European Buildings, the TM provides guidance on predicting overheating in buildings. It is intended to inform designers, developers and others responsible for defining the indoor environment in buildings and it is recommended that this is considered when carrying out modelling. Technical Guidance CIBSE Guidance TM52: The Limits of Thermal Comfort 2.9 CIBSE Guidance TM52: The Limits of Thermal Comfort has been used to assess naturally ventilated dwellings, assuming windows can be openable Criteria for the assessment of overheating risk have been specified by the Chartered Institute of Building Services Engineers (CIBSE) in CIBSE TM 52: The Limits of Thermal Comfort This document recommends 3 criteria are assessed, as follows: Criterion 1: Hours of exceedance: The number of hours (He) during which T is greater than or equal to one degree (K) during the period May to September inclusive shall not be more than 3 per cent of occupied hours. Criterion 2: Daily Weighted Exceedance: The weighted exceedance (We ) shall be less than or equal to 6 in any one day where: W e = ( h c) x WF = (h e0 x 0) + (h e1 x 1) + (h e2 x 2) + (h e3 x 3) Where the weighting factor WF = 0 if T 0, otherwise WF = T, and h ey is the time (h) when WF = y. Criterion 3: Upper limit temperature: To set an absolute maximum value for the indoor operative temperature the value of T shall not exceed 4K. 9

154 2.12 For all three criteria, the definition of T is the difference between the operative temperature and the limiting maximum acceptable temperature The limiting maximum acceptable temperature (T MAX) is calculated from the running mean of the outdoor temperature (T rm) using the formula: T MAX = 0.33 T rm In order to demonstrate compliance, at least two of the three criteria must be passed. 3. MODELLING APPROACH Methodology 3.1 The dynamic thermal modelling software Design Builder has been used to set up the model and run dynamic simulations for overheating risk. 3.2 The performance of the units has been assessed under the following CIBSE overheating criteria: > With windows open (naturally ventilated dwelling): CIBSE TM52 adaptive comfort model used. 3.3 The four units that were chosen are a mid-floor of Building 10/Royal Carriage Factory and three top floor units in Buildings 10/Royal Carriage Factory and 11/Officers House. Due to design features and orientation are considered the ones most likely to suffer from overheating. Although crossventilation is provided in most of the apartments, there are rooms from top-floors facing east and west (Building 11) which do not have balcony shading and therefore are particularly susceptible to summertime solar gains in late afternoon/evening or in the morning when the solar angle is low. 3.4 Four units, two in Building 10/Royal Carriage Factory and two in Building 11/Officers House (including a duplex), have been selected based on the below design characteristics, and are deemed representative of the design scheme as a whole: > Dwellings with large glazed areas; > Single aspect dwellings lacking cross ventilation; > Dwellings with east and west facing windows lacking external shading; > Dwellings located in both buildings at different floor levels. 10

155 RAR Buildings 10, 11 & Royal Carriage Square Berkeley Homes (East Thames) Ltd Dynamic Overheating Assessment Date: July No units were selected from the refurbished part of the listed Building 11/Officers House. Refurbishments achieve higher air tightness values, which are considered to be more leaky, and usually consist of high thermal mass fabric compared to new constructions. They are therefore considered to have a lower risk of summer overheating. 3.6 The four units selected for dynamic simulation are shown in Figures 2-5. Level 08: 1-Bedroom Unit Figure 2: Building 10/Royal Carriage Factory Mid-floor L08 single aspect unit 11

156 Level 10: 3-Bedroom Unit Figure 3: Building 10/Royal Carriage Factory Top-floor unit 12

157 RAR Buildings 10, 11 & Royal Carriage Square Berkeley Homes (East Thames) Ltd Dynamic Overheating Assessment Date: July 2016 Level L03 listed building: 1-Bedroom Unit Level L03 new building: 3- Bedroom Unit (lower floor) Figure 4: Building 11/Officers Building Top-floor roof unit (duplex lower floor) of the listed building and Topfloor L03 unit of new building 13

158 Level L04 new building: 3- Bedroom Unit (upper floor) Figure 5: Building 11/Officers Building - Top-floor L04 unit (duplex upper floor) of new building Site External Weather Conditions 3.7 External temperatures and incidental solar gains are greatest during summer months, coinciding with periods of lower wind speeds. However, solar altitude is highest during summer months, increasing the effects of facade shading from balcony overhangs and window reveals. Such considerations should be accounted for when designing for overheating risk. 3.8 The effects of external conditions are vital in an overheating assessment as, in particular, they influence: Solar heat gains (a function of incident direct & diffuse solar radiation and solar altitude); 14

159 RAR Buildings 10, 11 & Royal Carriage Square Berkeley Homes (East Thames) Ltd Dynamic Overheating Assessment Date: July 2016 Calculated natural ventilation rates (a function of external temperature, wind directions and speeds). 3.9 CIBSE TM49 weather data for the London Heathrow Airport (representative of lower density urban or suburban areas outside the Central Activity Zone) has been used for all scenarios assessed Overheating modelling has been conducted using three design weather years: 1976: a year with a prolonged period of sustained warmth; 1989: a moderately warm summer (current design year for London); 2003: a year with a very intense single warm spell TM49 provides data on anticipated weather conditions under climate change scenarios. These are based on low, medium and high carbon emissions paths. For each emissions scenario, three sets of weather data have been produced covering different time periods based on the UK Climate Predictions 2009 (UKCP09): 2020s ( ); 2050s ( ); 2080s ( ) For the purposes of this report, weather data based on the following has been selected to demonstrate that the proposed development does not carry an unacceptable level of overheating risk in future: A 2050s scenario (representative of ); A high emissions scenario is used as recent reports show global emissions to follow this trajectory; A moderate 50% probability level is used throughout since the occupancy demographic is not assumed to be particularly vulnerable, e.g. elderly or sick. Data for the 50% percentile change likelihood (encompassing 50% of the projected changes to climate) have been used to represent the middle or best guess range of possible changes to weather conditions; Weather data morphed from the 1976 weather data set, a year with a prolonged period of sustained warmth. 15

160 Local Shading and Cross-ventilation 3.13 Shading forms an integral part of overheating mitigation strategies. External Shading has already been included in the architectural design of certain apartment units Horizontal shading devices such as balconies/overhangs are more efficient when applied in south oriented façades and during midday when the solar angle is high. Their role in reducing solar gains in the summer period is considered to be paramount Figure 6 illustrates the integration of an external grid of shading in the form of balconies applied on Building 10/Royal Carriage Factory, which provide an effective passive measure of mitigating summer overheating. Balconies have been also introduced on the front elevation of new Building 11/Officers House (Figure 7). Figure 6: External shading in the form of balconies Building 10/Royal Carriage Factory (west and south façades) 16

161 RAR Buildings 10, 11 & Royal Carriage Square Berkeley Homes (East Thames) Ltd Dynamic Overheating Assessment Date: July 2016 Figure 7: External shading in the form of balconies new Building 11/Officers House (east façade) 3.16 In addition, the internal layouts of both buildings have been designed in such a way to provide dual aspects units in order to enhance the potential of cross-ventilation and passive cooling strategies during summer months. Design Modelling Inputs 3.17 The following design modelling inputs (Table 1) have been set up in the baseline dynamic thermal simulations in line with the SAP calculation inputs. Table 1: Design modelling inputs for baseline scenarios Data Input Building Fabric External Walls Building 10: 0.18 W/m 2 K Construction Details Building 11 new: 0.18 W/m 2 K Building 11 listed: 0.20 W/m 2 K Discussion In line with Energy Statement SAP calculations. External Roof Pitched Roof Building 10: 0.12 W/m 2 K Building 11 new: 0.12 W/m 2 K Building 11 listed: 0.18 W/m 2 K Building 10: n/a In line with Energy Statement SAP calculations. In line with Energy Statement SAP 17