Carbon Reduction and Renewable Energy in Public Sector Buildings

Transcription

1 Carbon Reduction and Renewable Energy in Public Sector Buildings Richard Griffin, Managing Director HEON-E Conference, March 25th 2009

2 LowC Services Overview Energy Services Optimising investment returns Construction Turnkey construction services Technologies Implementing energy solutions Consulting Making informed decisions

3 Fundamental Principles Integrate energy efficiency measures into the concept and design Balance energy demand with renewable energy supply wherever possible Minimise energy usage with control systems Maximise occupant comfort

4 Business as Usual? Traditional supplies are not secure over the medium term Cost of energy to the consumer Reduce exposure and dependence on specific fuels Renewable energy increasingly part of a robust long term supply strategy

5 Understanding the Drivers Common drivers for carbon reduction and renewable energy: For New Build: BREEAM/Code for Sustainable Homes Local Plan Targets for Renewable Energy Building Regulations Sector specific initiatives; eg BSF For All Buildings: Cost of Utilities Carbon Reduction Commitment (Cost of Carbon) LA Carbon reduction targets

6 Break Traditional Approach People, Prejudice and Processes Some examples of Roadblocks to Change... CHP in buildings CIBSE guidelines (type?) Benchmark data Part L Utility sizing Professional Indemnity Renewables integration Paper to operation CAPEX to lifecycle Measures of success - eg BREEAM

7 Carbon Footprint Operational data represents a paradigm shift in energy consumption Electricity now dominant, and increasing...

8 Onsite electricity Generation: Why? Trend towards proportionally greater electricity consumption

9 Understanding Load Profiles Plant Operation Over Selected 7 Days Demand th(kw) Boiler (kw) Thermal Store (kw) CHP th[kw]

10 Core Renewable Energy Supply Options Technology Bio CHP Comments Total Renewable Content: Up to 75%. Total Carbon Saving: In excess of60% Biomass Boiler Total Renewable Content: Up to 45% Total Carbon Saving: 24% Gas CHP Total renewable content: 0% Total Carbon Saving: 20% Ground Source Heating Total Renewable Content: 30% Total Carbon Saving:9% Wind Energy Total Renewable Content: 9% per turbine Total Carbon Saving: 12% per turbine

11 Comparison of low energy options CO2 saved (tonnes) CHP Ground cooling Absorption Wind Biomass Solar thermal Solar PV GSHP , , , , , , , ,000 Net Present Cost

12 Carbon Saving Investments

13 Carbon Saving Investments

14 Carbon Saving Investments

15 Case Study: Nottingham BSF Building Schools for the future programme Rebuild or refurbish every secondary school in the UK High carbon, renewable energy and sustainability aspirations Carbon Neutral Authority by 2016 Carbon Neutral City by 2100 Potential major differentiator DCSF funding stream available for low carbon schools through carbon calculator Schools now part of Carbon Reduction Commitment (CRC)

16 Example: BioCHP Installation: Nottingham

17 Economics of Installation - Example Energy costs for a typical 8000m 2 new build school: Energy source Costs Revenues Total %RE Bio CHP, +G & E 102,008 44,513 57,495 74%+ Biomass + G & E 88, ,613 Up to 40% Grid Supply G & E 83, ,526 0% Lifecycle cost reductions far outweigh differential in capex. ROCs in place to ROCs/kWh from April 2009 Above figures based on <3000 hours pa operation management /maintenance costs included (CHP).

18 Fuels and Fuel Sustainability Multi fuel solution is essential: Notts Pure Plant Oil (PPO) Recycled Vegetable Oils Biodiesel Mineral Diesel Fuel sustainability is critical Unlocking benefits of technology: BREEAM/SAP/SBEM: Fuel derived from non-food materials and waste OFGEM: No biofuel derived from mineral methanol

19 The Result First biochp units to be installed in Nottingham in May 2009 Schools open in September % on site renewable generation >60% carbon reduction over 2006 regs 231 tonnes CO 2 p.a. saved

20 Summary Carbon reduction is an increasingly important issue for public sector operations Buildings and associated operations form a key contributor to carbon emissions An approach which considers energy efficiency and renewable energy supply is essential The traditional market approach to these issues is not sufficient to guarantee successful carbon reductions A robust approach to these issues can deliver substantial carbon and financial benefits

21 Greenpeace Support for Technology Greenpeace, in common with many other environmental organisations, is concerned about the unsustainable use of biofuels, especially for road transport...however, we believe they have a role to play in the UK's electricity generation industry, where they offer the potential for substantial carbon savings. If biofuels are to be used, they should be used ideally in plants which capture heat and produce electricity, rather than as a transport fuel (From Independent on Sunday 1 st June 2008)

22 LowC Pure plant oil packaged CHP gp 30 30kWe, 40kW th

23 LowC Selected Clients