EESAP4 Hunt, Alex
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EESAP4 Hunt, Alex EESAP4 Hunt, Alex Presentation Transcript

  • EESAP 4 San Sebastian 2013 Alex Hunt Director alex@greenbuildingpartnership.co.uk
  • UK Context  UK 2008 Climate Change act set targets to reach of 80%reduction in CO2 by 2050 from 1990 baseline levels  Maintaining UK Energy Security  In 2010 we only produced 70% of of consumption  Increasing the use of Low – Carbon Technologies  2009 - 8,000MW  2012 - 15,479MW  A 20% increase
  • UK Housing Context  Approx. 35% of all carbon emissions from built environment  The average home emits over 5 ½ tons of CO2 into the atmosphere every year  1 kWh Gas = 0.185kgCO2  1 kWh Electricity = 0.95kgCO2  27 million homes in UK – 59,000 refurbishments a month to reach targets!
  • Who are we? The Green Building Partnership is a Co- operative of companies based in Brighton & Hove whose principle aim is to make Brighton and Hove an exemplar green building city by providing professional building refurbishment services to a wide range of clients, including but not restricted to community organisations, home owners, landlords and the public sector.
  • Structure Members Associates
  • Green Building Partnership  Architects  Domestic Energy Assessors  On Construction Domestic Energy Assessors  Code for Sustainable Homes Assessors  Passivhaus Designers  Architectural technologists  Chartered engineers  Thermographers  Contractors – builders, electricians etc..  Financial Modeling
  • Cooperative Principles  Voluntary and Open Membership  Democratic Member Control  Member Economic Participation  Autonomy and Independence  Education, Training & Information  Co-operation among Co-operatives  Concern for community
  • What we do Working in Brighton & Hove Energy Assessments Project Management Eco – renovation Monitoring & Evaluation Green Deal
  • "If you can not measure it, you can not improve it." Lord Kelvin – Father of Thermodynamics Energy Assessment
  • Standard Assessment Procedure for the Energy Efficiency of Dwellings SAP2010  Rating between 1-100 based on:  Thermal efficiency of main house structure  Type of ventilation and air permeability  Type of fuel used  Efficiency of heating & hot water system  Technologies such as solar or heat pumps
  • Adapted reports
  • The full service from initial survey, planning, building regs, site supervision Architectural Services Energy assessment, financial modelling, Cost Benefit Analysis Energy Assessment & Financial modelling Full on-site building services from start to finish Project Management A one-stop shop
  • Low Energy Assessment Fund 2012 - LEAF Funded by DECC Feb/Mar 2012 - £60k 150 Home Energy Assessments • Hanover • Portslade • Hollingdean • Working with B&H 10:10 and the Brighton Energy Cooperative
  • Areas
  • Areas
  • Hanover
  • Portslade
  • Hollingbury
  • This showed that on average the houses in each of the areas would be suitable for substantial improvements to their homes On average the homes could reduce their CO2 emissions by >40%. This is also equivalent to an annual fuel cost reduction of >40%. % reduction in CO2 CO2 emissions before and after 5205 4756 4247 2527 2609 2414 0 1000 2000 3000 4000 5000 6000 Hanover Hollingdean Portslade Average emissions - current (kg / yr) Average emissions - potential (kg / yr) 0,0% 10,0% 20,0% 30,0% 40,0% 50,0% 60,0% Average % savings (per property)
  • LEAF in Hanover The LEAF Project in Brighton & Hove
  • The Overall Hanover SAP results 0 5 10 15 20 25 30 A B C D E F G Current Future
  • Costs/Savings Costs Savings £50 £64 £117 £154 £264 £306 £320 £336 £363 Cheapest Measures (£'s) £257 £168 £99 £88 £57 £57 £54 £49 £41 £39 Measures with biggest savings (£'s)
  • Costs/Savings Costs Savings 2,7 3,6 4,4 4,6 4,9 6,7 9,5 9,6 12,0 17,0 Quickest payback (years) 1160 814 662 401 258 258 256 236 224 217 Biggest CO2 savings (kg/yr)
  • Actual savings in Hanover Aggregated data for total CO2 emissions savings Total savings (all properties) 133,888 kg / yr Average savings (per property) 2,678 kg / yr Average % savings (per property) 50.4% Aggregated data for CO2 emissions per house Average emissions - current 5,205 kg / yr Average emissions - potential 2,527 kg / yr Average savings 2,678 kg / yr
  • Green Deal Pioneer Places Project 2013 Funded by DECC Feb/Mar 2013 - £250k • 100 Green Deal Energy Assessments across Brighton & Hove • Up to £10,000 of energy efficiency improvements on 10 homes in B&H • Including EWI/IWI • Boiler changes • Heating controls • Loft insulation • LED lights
  • What is The Green Deal?  A government led framework to let owners and tenants pay for home improvements. The process:  Assessment  Recommendations  Quotes for work  Installation  Benefits  Golden Rule:  That the savings made in heating & electricity bills will be greater than any repayment
  • Green Deal
  • Green Deal Pioneer Places 2013 Management Executive Financial Controller Admin Manager Contracts Manager Architectural services Main Contractor subcontractors Customer Project Manager
  • Assessments
  • To watch the Video of The Green Deal Pioneer Places project please visit: http://youtu.be/nFQoLFigq20
  • Online Portal to keep real time data on the properties – Electricity & Gas 2 years Measuring the relative humidity, moisture build up in critical junctions 2 years AECB Measure My Energy On going Monitoring
  • Case Study – Internal wall Insulation Adding 75 mm of PIR insulation to an Internal wall recues the U value from 1.76 to 0.25 W/m2K Heat Loss reduced by > 700% This is for an element that loses 33% of overall heat loss.
  • Case Study – External wall Insulation Adding 50 mm of Cork insulation to an External wall reduced the U value from 0.52 to 0.28 W/m2K. A 185% improvement This is for an element that loses 33% of overall heat loss.
  • Case Study – Roof Insulation Adding 50 mm of PIR insulation between the rafters and 100mm over the top took the U value from 0.57 to 0.15 W/m2K. A 380% improvement This is for an element that loses 25% of overall heat loss.
  • Case Study – Floor Insulation Adding 50 mm of PIR insulation between the joists and 100mm of rockwool underneath took the U value from 0.71 to 0.18 W/m2K. A 394% improvement This is for an element that loses 15% of overall heat loss.
  • Case Study – Windows Converting single glazed window units to double or triple glazed alternatives is a possibility. U values from 4.5 to under 1.5W/m2K for argon filled d/g and <0.8W/m2k for t/g A 565% improvement This is for an element that loses 15% of overall heat loss.
  • Case Study – Other? Solar PV & Solar Thermal Grass Roofs Loft Conversion Wood burning stove
  • Thanks for listening Any questions: Alex Hunt Sustainable Building Consultant 01273 906572 alex@greenbuildingpartnership.co.uk