Energy Statement. Bickleigh Down, Eco Village, Land off Towerfield Drive, Plymouth. On behalf of ZeroC. Revision C Date: 16 th March 2017

Transcription

1 Energy Statement Bickleigh Down, Eco Village, Land off Towerfield Drive, Plymouth On behalf of ZeroC Revision C Date: 16 th March 2017

2 REVISION HISTORY Revision Issue Date Description Issued By Checked By A 15/02/2017 Original Document NS SJC B 13/03/2017 Revision B NS JP C 16/03/2017 Revision C NS SJC This report has been produced by Energist UK Ltd for the private use of the client and solely in relation to the named project. It should neither be reproduced in part nor in whole nor distributed to third parties, without the express written permission of both Energist UK LTD and the Client. Calculations contained within this report have been produced based on information supplied by the Client and the design team. Any alterations to the technical specification on which this report is based will invalidate its findings. Energist College Farm Tetbury Road Cirencester GL7 6PY Tel: info@energistuk.co.uk 1

3 CONTENTS 1. EXECUTIVE SUMMARY INTRODUCTION BASELINE ENERGY DEMAND FABRIC-FIRST APPROACH - REDUCED ENERGY DEMAND LOW-CARBON AND RENEWABLE ENERGY ACHIEVING ZERO CARBON ON THE ECO-VILLAGE SHOW HOME CONCLUSIONS APPENDICES APPENDIX 1: LIST OF ABBREVIATIONS APPENDIX 2: PLANNING POLICY AND DESIGN GUIDANCE APPENDIX 3: SAP DATA APPENDIX 4: PV ALLOCATION APPENDIX 5: ZERO CARBON REPORT SHOW HOME

4 1. EXECUTIVE SUMMARY 1.1 Purpose of the Statement This Energy Statement has been produced by Energist UK on behalf of ZeroC ( the Applicant ). It will set out the measures designed by the Applicant to achieve CO 2 reductions at the development site: Bickleigh Down Eco-Village, on Land off Towerfield Drive, Plymouth ( the Development ) and will demonstrate compliance with: i) National Planning Policy Framework. ii) Approved Document Part L of the Building Regulations iii) The energy standard for the development scheme written in the planning agreement (as amended) between the Applicant and Plymouth City Council for planning applications 14/00223/FUL and 12/01504/FUL and as follows: Clause 4.1(a) of the agreement shall be amended to read as follows Before commencement of development the Applicant shall provide evidence to the Council to demonstrate that all the dwelling houses will achieve a minimum of a 100% reduction in the dwelling emissions rate/target emissions rate(der/ter) when compared to the Building Regulations, and all of the houses will be Zero Carbon, for the regulated emissions. This reduction will be achieved in accordance with the proposals in the Zero C sustainability statement and the Zero C data sheets dated the. Clause 4.1(b) of the agreement shall be amended to read as follows The first show home will achieve a minimum of a 100% reduction in the DER/TER when compared to the Building Regulations, and will be Zero Carbon for the regulated and unregulated emissions. This reduction will be achieved in accordance with the proposals in the ZeroC sustainability statement, and the ZeroC data sheet dated the Upon completion of the first dwelling house the Applicant shall carry out a post construction assessment to verify this by a qualified assessor. The Applicant will send a copy of the assessment to the Council within 14 days of the Applicant receiving it. Upon receipt, the Council shall confirm in writing whether or not the first dwelling house meets the DER/TER for regulated and unregulated supply (such confirmation by the Council shall not be unreasonably withheld or delayed) For the avoidance of doubt the Applicant shall not be required to carry out any further assessments other than set out in Clause.. in relation to the standards of construction of the dwelling houses. A new clause numbered 4.1c shall be incorporated within the agreement and will read as follows Before commencement of the development the Applicant shall provide evidence to the Council to demonstrate that all the dwelling houses shall be designed so that they are capable of being future proofed, to upgrade to achieve a minimum of a 100% reduction in the DER/TER when compared to the Building Regulations, to be Zero Carbon for the unregulated, as well as the regulated emissions, through the use of additional solar photovoltaic panels or equivalent. 3

5 A new clause numbered 4.1(d) shall be incorporated within the agreement and will read as follows the Applicant shall provide marketing information to all buyers of the dwelling houses that they are capable of achieving a minimum of a 100% reduction in the DER/TER when compared to the Building Regulations to be Zero Carbon for the unregulated, as well as regulated emissions and can be upgraded to this standard from day one, for an additional cost should the Purchaser opt for this. Prior to commencement of development the Applicant shall provide evidence to the Council of the marketing information. The Energy Statement reviews and updates the pre-approved design specification for the Development and confirms that the energy standard required by Plymouth City Council can be achieved on-site and across all Phases of the Scheme. 1.2 Impact of the Adopted Energy Strategy This report concludes that the following combination of measures, summarised below in Table 1, will be incorporated by the Application and will successfully demonstrate how the energy standard will be delivered at Bickleigh Down Eco-Village. Table 1: Measures incorporated to deliver the energy standard. Fabric first: Demand-reduction measures High standards of sustainable and energy-efficient building fabric and insulation to all heat loss floors, walls and roofs including timber-framed walls. High-efficiency triple-glazed windows throughout. Quality of build will be confirmed by achieving good air-tightness results throughout. Efficient-building services including high-efficiency gas boilers and ventilation systems (Mechanical Ventilation and Heat Recovery) Low-energy lighting throughout the building. Renewable and low-carbon energy technologies A total of 329 kwp of Solar PV across the site, based on either a southerly, south-westerly or south-easterly orientation at a 20-degree tilt. This is equivalent to a site-wide area of approximately 2,139 2,632 sqm of Solar PV. The impact of these design measures in terms of how the Applicant is predicted to deliver the energy standard is illustrated in Figure 1 overleaf. 4

6 Kg CO 2 per annum BICKLEIGH DOWN ECO-VILLAGE, LAND OFF TOWERFIELD DRIVE, PLYMOUTH Figure 1: How the Development meets the energy standard. 225, , , , ,000 75,000 25,000-25,000-4,645 Target Emission Rate Fabric-First Approach Low-Carbon & Renewable Energy The calculated reduction in regulated CO 2 emissions and the percentage reduction over ADL 2013 for all dwellings at Bickleigh Down Eco-Village is set out in Table 2. Table 2: Regulated CO 2 emissions and percentage reduction over ADL Regulated CO 2 emissions Kg/CO 2 per annum % reduction Target Emission Rate: Compliant with ADL ,343 - Fabric first: Demand-reduction measures 145, % Low-carbon and renewable energy -4, % Total savings 184, % It is concluded in this Energy Statement that the design approach now adopted by the Applicant achieves an enhanced standard when compared to the pre-approved approach set out in the ZeroC Sustainability Statement. 5

7 Kg CO 2 per annum BICKLEIGH DOWN ECO-VILLAGE, LAND OFF TOWERFIELD DRIVE, PLYMOUTH 1.3 Impact of the Pre-Approved Energy Strategy The original ZeroC specification incorporated a Nilan Air Source Heat Pump and Mechanical Ventilation and Heat Recovery System with Solar PV. For the purposes of comparison, the ZeroC design measures have been modelled as a reference for how the Applicant would have achieved the energy standard and via the pre-approved approach. The calculated reduction in regulated CO 2 emissions using the ZeroC specification is illustrated in Figure 2 below and in Table 3 overleaf. On review, it can be demonstrated that similar carbon reduction levels can be achieved through the use of gas-fired heating systems, in lieu of the Nilan system. On this basis, the Applicant wishes to proceed with a gas-fired heating system. This energy assessment now demonstrates how this approach is in full compliance with the requirements of the section 106 agreement. Figure 2: How the Development would have met the energy standard with the ZeroC specification. 25,000 20,000 20,795 20,737 15,000 10,000 5,000 0 Target Emission Rate Fabric-First Approach Low-Carbon & Renewable Energy 6

8 Table 3: Regulated CO 2 emissions and percentage reduction over ADL Regulated CO 2 emissions Kg/CO 2 per annum % reduction Target Emission Rate: Compliant with ADL ,795 - Fabric first: Demand-reduction measures 20, % Low-carbon and renewable energy -1, % Total savings 21, % 7

9 2. INTRODUCTION 2.1 Site Description This Energy Statement has been prepared in support of the Bickleigh Eco-Village on Land Off Towerfield Drive, Plymouth. This falls under the jurisdiction of Plymouth City Council. This Energy Statement relates to the following, approved development proposals: 12/01504/FUL: Full planning permission for a maximum 91 residential Code 6 dwellings with an overall gross internal floor area of 12,520 m2 (Class C3); a 672 m2 assembly area with covered arcade (Class B1) to be used for flexible Class A3/A4/B1/D1 use on completion of development ((Blocks A & B); 117 m2 of flexible Class A3/A4/B1/D1 use (Block C); 368 m2 of Class B1/live-work accommodation fronting Tavistock Road together with associated carparking, community green open space and landscaping, village square and new vehicular access off Woolwell Crescent and Towerfield Drive. 14/00223/FUL: Erection of 11 houses on the western part of the larger site granted planning permission including up to 91 dwellings and the erection of employment live-work units, parking and access under references 12/01504/FUL and 14/00135/FUL. The proposal replaces 7 approved houses but will not increase the total of the larger site. Map 1: Site layout for Bickleigh Down, Plymouth. Source: ZedFactory 15/06/2016 8

10 2.2 Purpose of the Energy Statement This Statement sets out how the Applicant intends to meet: i) National Planning Policy Framework. ii) Approved Document Part L of the Building Regulations iii) The energy standard for the development scheme written in the planning agreement (as amended) between the Applicant and Plymouth City Council for planning applications 14/00223/FUL and 12/01504/FUL. For an overview of the planning policy requirements specific to this development, refer to Appendix 2. The way in which the Applicant meets the energy standard at Bickleigh Down Eco- Village, Plymouth, will be set out in this Statement as follows: Baseline energy demand: The Development s Target Emission Rate (TER) will be calculated to establish the minimum on-site standard for compliance with ADL Fabric first reduced energy demand: The Development s Dwelling Emission Rate (DER) will be calculated to explain how the Applicant s design specification will lead to a reduced energy demand and an improved fabric energy efficiency. The better the design of the building fabric in terms of, for example, insulation, air tightness and orientation to maximise solar gain, the less energy required to heat the dwelling and so the better the fabric energy efficiency. Low-carbon and renewable energy: Low-carbon and renewable energy technologies are described for the development with the resulting savings in regulated CO 2 emissions. 2.3 Methods Energist UK has used SAP 2012 methodology to calculate energy demand for 93 of the 100 new dwellings within the Bickleigh Down Eco-Village. Until plans for Block C are available for assessing, data from seven Block D apartments has been extrapolated to provide a more accurate set of results. This data provides the Applicant with the regulated CO 2 emission rates and energy demand for all dwellings included in the development proposals. 9

11 3. BASELINE ENERGY DEMAND 3.1 Introduction In order to measure the effectiveness of demand-reduction measures, it is first necessary to calculate the baseline energy demand and this has been done using SAP 2012 methodology. This can also be referred to as the Target Emission Rate (TER.) The resulting ADL 2013 TER for Bickleigh Down Eco-Village, Plymouth, has been calculated using Part L model designs which have been applied to the Applicant s Development details. The TER, or baseline energy demand, represents the maximum regulated CO 2 emissions that are permitted for the Development in order to comply with ADL The Development Baseline The resulting TER, representing the total maximum CO 2 emissions permitted for the Development, has been calculated as 180,343 Kg/CO 2 per annum. To ensure compliance with ADL 2013, regulated CO 2 emissions should not exceed this figure. The baseline design specification is referred to in Table 4. 10

12 Table 4. Baseline design specification. Element Baseline Design Specification Ground Floor U-Value (W/m 2.K) 0.13 External Wall U-Value (W/m 2.K) 0.18 Party Wall U-Value (W/m 2.K) 0 (fully filled and sealed) Roof insulated at ceiling U-Value (W/m 2.K) 0.13 Roof insulated at slope U-Value (W/m 2.K) 0.13 Roof flat, U-Value (W/m 2.K) 0.13 Glazing U-Value, including frame (W/m 2.K) 1.4 Door U-Value (W/m 2.K) 1.2 Design Air Permeability 5 Space Heating Mains Gas Heating Controls Heating System Controls Domestic Hot Water Mains Gas Ventilation Natural ventilation with intermittent extract fans Low Energy Lighting 100% Thermal Bridging Appendix R values 11

13 4. FABRIC-FIRST APPROACH - REDUCED ENERGY DEMAND 4.1 Introduction Many Local Planning Authorities are now recognising the benefits of a fabric-first approach, where the lifetime energy consumption of a building takes precedence over the use of bolt-on renewable energy technologies. It is clear that the fabric-first approach can create buildings with a very comfortable living and working environment. The internal temperature is consistent and fuel bills are kept to a minimum. One key advantage of a fabric-first approach is that it does not require changes to the behavioural patterns of the occupants and, as such, a building designed using a fabric-first approach will often perform more effectively once completed than a building that incorporates a low-carbon or renewable-energy technology that requires behavioural change (e.g. solar thermal). This becomes an increasingly important consideration as energy costs rise and the issue of fuel poverty becomes commonplace. Energist UK has considered a fabric-first approach as the priority solution for this Development. 4.2 The Development - Reduced Energy Demand The Applicant will integrate the following sustainable design measures to reduce energy demand: High standards of sustainable and energy-efficient building fabric and insulation to all heat loss floors, walls and roofs including timber-framed walls. High-efficiency triple-glazed windows throughout. Quality of build will be confirmed by achieving good air-tightness results throughout. Efficient-building services including high-efficiency heating and ventilation systems (Mechanical Ventilation and Heat Recovery) Low-energy lighting throughout the building. The Applicant s design specification and intended demand-reduction measures for the Development have been modelled using the same SAP 2012 methodology as before. This allows us to assess the effectiveness of demand-reduction measures as a percentage reduction in CO 2 emissions over the Baseline. The regulated CO 2 emissions all new dwellings within the Bickleigh Down Eco- Village, Plymouth, is 145,505 Kg/CO 2 per annum, which is a reduction of 19.32% or 34,838 Kg/CO 2 per annum over the Baseline. Refer to Appendix 3 for the SAP Data and Table 5 for the fabric-first design specification. 12

14 Table 5. The fabric-first design specification at Bickleigh Down Eco-Village, Plymouth. Element Fabric-First Design Specification Ground Floor U-Value (W/m 2.K) 0.15 (Suspended concrete floor, carpeted) External Wall U-Value (W/m 2.K) 0.14 (Timber-framed wall with single plasterboard) Party Wall U-Value (W/m 2.K) 0 (fully filled and sealed) Roof, Insulated at Pitch, U-Value (W/m 2.K) 0.15 Glazing U-Value including Frame (W/m 2.K) 1.4 (triple-glazed) Rooflights U-Value including Frame (W/m 2.K) 1.4 (triple-glazed) Door U-Value (W/m 2.K) 1.2 Design Air Permeability 3.0 Space Heating Heating Controls Mains Gas Boilers: Vaillant ecotec plus 624 H System A (89.4% efficiency) Time and temperature zone controls Domestic Hot Water Mains Gas Heating System Ventilation System 4: Mechanical Ventilation and Heat Recovery (Vent Axia Ltd) Low Energy Lighting 100% Thermal Bridging ACDs 13

15 Kg CO 2 per anum BICKLEIGH DOWN ECO-VILLAGE, LAND OFF TOWERFIELD DRIVE, PLYMOUTH 4.3 Conclusion By incorporating high standards of sustainable design and demand reduction measures at Bickleigh Down Eco-Village, the Applicant reduces regulated CO 2 emissions by 19.32% over the Baseline for ADL This is illustrated in Table 6 and in Figure 3 below. Table 6: The Regulated CO 2-emissions baseline and fabric-first, demand-reduction measures. Regulated CO 2 emissions Kg/CO 2 per annum % reduction Target Emission Rate: Compliant with ADL ,343 - Fabric first: Demand-reduction measures 145, % Figure 3: Baseline and fabric-first regulated CO 2-emissions summary. 200, , , , , , ,000 80,000 60,000 40,000 20, ,505 0 Target Emission Rate Fabric-First Approach 14

16 5. LOW-CARBON AND RENEWABLE ENERGY 5.1 Introduction The Applicant adopts a fabric-first approach as the priority solution for this Development and steps have been taken to reduce energy demand through high-quality sustainable design. The planned integration of efficient building fabric and building services has been modelled and is predicted to lead to a considerable enhancement over Part L of the Building Regulations The Applicant s preferred approach is to then incorporate renewable energy to ensure a sustainable, energy supply to the site. Solar PV has been selected at Bickleigh Down Eco-Village and will successfully implement the full requirement for a 100% reduction in regulated CO 2 emissions over AD L Solar PV The ability to generate energy (electricity) through harnessing natural solar energy. This includes the use of solar photovoltaic (PV) panels. PV panels, similarly to turbines, can be considered both on and offsite. Solar Photovoltaics convert solar radiation into electricity which can be used on site or exported to the national grid. Installation considerations Operate most efficiently on a south-facing sloping roof (between 30 and 45-degree pitch.) Shading must be minimal (one shaded panel can impact the output of the rest of the array.) Panels must not be laid horizontally on a flat roof as they will not self-clean. Panels will therefore need to be installed at an angle and with appropriate space between them, to avoid over-shading. Large arrays may require upgrades to substations if exporting electricity to the grid. Local planning requirements may restrict installation of panels on certain elevations. Installation must take into account pitch and fall of the roof, along with any additional plant on the roof to ensure there is sufficient room. The average domestic solar PV system is 4kWp and costs 5,000-8,000 (including VAT at 5 per cent) - (taken from the Energy Saving Trust, TBC by supplier.) 15

17 Advantages Relatively straightforward installation, connection to landlord s supply and metering. Linear improvement in performance as more panels are installed. Maintenance free. Installation costs are continually reducing. Can benefit from the Feed in Tariff to improve financial payback. Disadvantages Not appropriate for high-rise developments, due to lack of roof space in relation to total floor area, though this is not an issue at Bickleigh Down. Development feasibility The suitability of Solar PV has been considered for this Development and is concluded as a technically-viable option. There are areas of roof space suitable for the positioning of unshaded Solar PV arrays. The Development is not on land which is protected or listed, so it is considered that Solar panels would not have a negative impact on the local historical environment or the aesthetics of the area. The occupants may be entitled to claim the Feed-In- Tariff for any energy which is generated. The commercial viability of Solar PV has been considered by the Applicant and is concluded a beneficial, economical investment. A total of 329 kwp of Solar PV is to be installed on unshaded and well-orientated roofs across the site, based on either a southerly, south-westerly or southeasterly orientation at a 20-degree tilt. This is equivalent to a site-wide area of approximately 2,139 2,632 sqm of Solar PV. For a plot-by-plot PV allocation, refer to the PV allocation in Appendix 4. 16

18 6. ACHIEVING ZERO CARBON ON THE ECO-VILLAGE SHOW HOME 6.1 Introduction Plymouth City Council require the Applicant to confirm their Energy Strategy demonstrating compliance with: The first show home will achieve a minimum of a 100% reduction in the DER/TER when compared to the Building Regulations, and will be Zero Carbon for the regulated and unregulated emissions. 6.2 Measures for Compliance The Applicant will achieve further reductions over the baseline for the Eco-Village Show Home by increasing the Solar PV specification. By incorporating 9.75 kwp of Solar PV, in a southerly orientation and at a 20-degree pitch, the Show Home will achieve a 100% reduction in both regulated and unregulated CO 2 emissions over AD L 2013 and will successfully implement the full LPA requirement. Refer to Appendix 5 for a report confirming a 100% reduction in DER/TER in both regulated and unregulated energy for the Show Home. If there is a market requirement from home buyers requesting an equivalent-standard property to the Eco-Village Show Home, then there is the potential to increase the Solar PV specification and further reduce on-site CO 2 emissions. The viability of progressing onto a standard of 100% reduction in both regulated and unregulated CO 2 emissions over AD L 2013 has been assessed for each plot at Bickleigh Down Eco-Village and a Solar PV specification calculated accordingly and as part of the energy assessment. Refer to Appendix 4 for reference to the PV allocation by plot, uplifting the on-site energy standard from a 100% reduction in regulated CO 2 emissions to a 100% reduction in both regulated and unregulated CO 2 emissions over AD L

19 7. CONCLUSIONS The Applicant demonstrates commitment to delivering the energy standard at Bickleigh Down Eco-Village, Plymouth, as follows: The Development will generate a total reduction in regulated CO 2 emissions of % over the TER ADL 2013 which meets the requirement: Before commencement of development the Applicant shall provide evidence to the Council to demonstrate that all the dwelling houses will achieve a minimum of a 100% reduction in the dwelling emissions rate/target emissions rate (DER/TER) when compared to the Building Regulations. This energy standard is delivered through high standards of sustainable design, through passive and active design measures. Renewable energy is also incorporated to provide a sustainable, energy supply across the Scheme. The Applicant provides confirmation that they will achieve an energy standard in the Eco-Village Show Home that is equivalent to a 100% reduction in both regulated and unregulated CO 2 emissions over the TER ADL Furthermore, it can be concluded that there is further potential to uplift the current Solar PV specification in new dwellings across the Scheme and if potential home-buyers were to request this option. A combination of demand-reduction measures, energy-efficiency measures and renewable energy will deliver the Applicant s target for on-site reduction in regulated CO 2 emissions. Design measures, summarised overleaf in Table 7, are incorporated in the Development. 18

20 Kg CO 2 per annum BICKLEIGH DOWN ECO-VILLAGE, LAND OFF TOWERFIELD DRIVE, PLYMOUTH Table 7. Measures incorporated to deliver the energy standard. Fabric first: Demand-reduction measures High standards of sustainable and energy-efficient building fabric and insulation to all heat loss floors, walls and roofs including timber-framed walls. High-efficiency triple-glazed windows throughout. Quality of build will be confirmed by achieving good air-tightness results throughout. Efficient-building services including high-efficiency gas boilers and ventilation systems (Mechanical Ventilation and Heat Recovery) Low-energy lighting throughout the building. Renewable and low-carbon energy technologies A total of 329 kwp of Solar PV across the site, based on either a southerly, south-westerly or south-easterly orientation at a 20-degree tilt. This is equivalent to a site-wide area of approximately 2,139 2,632 sqm of Solar PV. The way in which these design measures deliver the Applicant s commitment to the energy standard is illustrated in Figure 4 below and Table 8 overleaf. Figure 4: How the Development delivers the energy standard. 225, , , , ,000 75,000 25,000-25,000-4,645 Target Emission Rate Fabric-First Approach Low-Carbon & Renewable Energy 19

21 Table 8: How the Development reduces regulated CO 2 emissions. Regulated CO 2 emissions Kg/CO 2 per annum % reduction Target Emission Rate: Compliant with ADL ,343 - Fabric first: Demand-reduction measures 145, % Low-carbon and renewable energy -4, % Total savings 184, % 20

22 8. APPENDICES APPENDIX 1: LIST OF ABBREVIATIONS ADL 2013 Approved Document Part L of Buildings Regulations 2013 ASHP CHP DER DHN DHW ESCO GSHP LPA PV SAP TER Air Source Heat Pump Combined Heat & Power Dwelling Emission Rate District Heat Network Domestic Hot Water Energy Services Company Ground Source Heat Pump Local Planning Authority Photovoltaics Standard Assessment Procedure Target Emission Rate 21

23 APPENDIX 2: PLANNING POLICY AND DESIGN GUIDANCE The Climate Change Act (2008) Passed in November 2008, the Climate Change Act mandated that the UK would reduce emissions of six key greenhouse gases, including Carbon Dioxide, by 80% by As a consequence, the reduction of carbon dioxide emissions is at the forefront of National, Regional and Local Planning Policy, along with continuing step changes in performance introduced by the Building Regulations Approved Document L (2013). Approved Document L (2013) This development is subject to the requirements of Approved Document L (2013). ADL 2013 represented an approximate reduction of 6% in the Target Emission Rate (Kg/CO 2/sqm per annum) over the requirements of Approved Document L (2010) for residential development and an aggregate 9% reduction for non-residential development. ADL (2013) also sees the introduction of a Fabric Energy Efficiency Target, a measure of heating demand (kw hrs/sqm per annum) to ensure new-build dwellings with low-carbon heating systems still meet satisfactory energy-efficiency standards. National Policy The National Planning Policy Framework encourages Local Planning Authorities to Have a positive strategy to promote energy from renewable and low-carbon sources (NPPF paragraph 97), whilst Ensuring that the adverse impacts are addressed satisfactorily, including cumulative landscape and visual impacts. This suggests that although LPAs should encourage renewable technology, the merits of such should be assessed on a siteby-site basis. The NPPF also requires that policy-making and planning obligations do not threaten the viability of a development, by maintaining competitive returns for developers and landowners alike. In this respect flexibility is encouraged by LPAs to ensure sustainability standards can be met without incurring unreasonable development costs. The Housing Standards Review and implications on Local Planning Policy On March 25th 2015 the Government confirmed its policy to limit energy-efficiency targets that can be imposed on a development as a result of the Housing Standards Review. New developments should not be conditioned to achieve a reduction in Carbon Emissions 22

24 exceeding a 19% improvement over the requirements of Approved Document L (2013) the equivalent energy performance of a Code for Sustainable Homes Level 4 dwelling. In addition the Government confirmed that the Code for Sustainable Homes is no longer an applicable standard for planning permissions granted on or after March 26th If a Local Planning Authority has an existing policy requirement for the CSH it may still condition the Ene 1 and Wat 1 requirements for CSH Level 4, but cannot require assessment against the remaining categories and full CSH Certification. Sites with planning permission granted prior to March 25th 2015 can still be assessed and certified against the Code for Sustainable Homes, where there is a requirement to do so (known as legacy sites). A CSH requirement can also apply where a previously approved Outline Planning Permission has been granted prior to March 25th

25 APPENDIX 3: SAP DATA. Dwelling Type No. Of HT on site Floor Area Target Emissions (TER) Fabric-First Approach (DER) Low-Carbon & Renewable Energy (DER) Total Target Emissions Fabric-First Approach Low-Carbon & Renewable Energy Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , ,

26 Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Plot , , Total Plots 100 Total Site Wide CO2 180, ,505-4,645 Reductions 19.32% % 19.32% 83.26% 25

27 APPENDIX 4: PV ALLOCATION. Dwelling Type No. Of HT on site Floor Area PV by plot to achieve 100% reduction in regulated CO 2 emissions PV by plot to achieve 100% reduction in regulated & unregulated CO 2 emissions PV uplift required Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot

28 Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot Plot

29 APPENDIX 5: ZERO CARBON REPORT SHOW HOME 28