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NI Housing Executive Energy Efficiency of Housing

NI Housing Executive Energy Efficiency of Housing. Noel Rice 20th November 2013. Contents. Energy Conservation Strategic Context House Condition Survey 2011 NIHE Heating Policy Current Projects Cavity Wall Insulation Research Solid Wall Insulation Solar PV Panels

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NI Housing Executive Energy Efficiency of Housing

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  1. NI Housing Executive Energy Efficiency of Housing Noel Rice 20th November 2013

  2. Contents • Energy Conservation Strategic Context • House Condition Survey 2011 • NIHE Heating Policy • Current Projects • Cavity Wall Insulation Research • Solid Wall Insulation • Solar PV Panels • Renewable Pilot Projects • Economic Benefits of Energy Efficiency

  3. Energy Conservation Strategic Context NIHE is Home Energy Conservation Authority Energy efficiency of housing improved by 22.4% since 1996 – All tenures Energy rating up from 41 to 60 (46 to 55 in England over same period) Savings of 2.5m tonnes of CO2 pa However, fuel poverty has increased Fuel prices and income are factors

  4. Heating Systems- All tenures

  5. Wall Insulation 2011- All tenures

  6. Cavity Wall Insulation • Cavity wall insulation where appropriate • Costs £450 - £500 • Savings – Up to £140pa • Mineral Wool or Bonded Bead • Quality Issues – Sufficient fibre at right pressure/density – sufficient glue for beads • Cavity should be at least 50mm wide • Check external wall condition/exposure • Current investigative research project ongoing

  7. Loft Insulation 2011 – All tenures

  8. Loft Insulation • 270mm of loft insulation • Costs around £300 • Savings (0-270mm) Up to £180pa • Savings (100mm to 270mm) £25pa • Ventilation and wiring issues • Hot Water Tank – DIY Cost £15 – Savings £45pa • Pipes – DIY Cost £10 – Savings £15pa • Draught proofing with appropriate ventilation * All figures from EST for 3 bedroom gas heated semi

  9. Double Glazing 2011- All tenures

  10. NIHE Heating Policy • Natural Gas where available • Network may move West • Outside gas area • Oil Condensing Boiler or • Wood Pellet Boiler • Solid Fuel open fire (exceptional basis) • Secondary Sources • Solid Fuel Open Fire (no boiler) • Focal Point electric Fire • Evaluate range of innovative alternative

  11. Heating Costs – 3 bed semi Annual Cost £ House Coal 1318 Oil Non-Condensing 1573 Oil condensing 1287 Gas Condensing (PNG) 1093 Gas Non-Condensing 1327 Gas Condensing (Firmus) 1041 Wood Pellet Boiler 1055 Economy 7 1761 LPG Condensing 2020 LPG Non-Condensing 2463 Boiler upgrade from G to A can save £300 pa

  12. Gas Network • Initially Greater Belfast 1996-2007 • Firmus Network; Newry, W’point, Banbridge, Armagh, Craigavon, Antrim, Ballymena, Ballymoney, Coleraine, Limavady and Derry • Includes rural villages en route • Gas to the West • licence competition 2013/14 • NI Assembly committed £32.5m • Includes towns of Dungannon, Coalisland, Cookstown, Magherafelt, Omagh, Strabane, Enniskillen and Derrylin

  13. Cavity Wall Insulation (CWI) - Research • Is there a problem with existing CWI? • Possible problems maybe: • Fibre insulation – e.g. has it settled? • Bonded bead – e.g. sufficient glue? • Insulation board – e.g. properly fitted?

  14. CWI - Research NIHE – commissioned research on 300 dwellings across NI Research being undertaken by SERC Provide evidence base for remedial programme, if required Make recommendations & shape policy

  15. CWI - Upgrade

  16. Solid Wall Insulation 120,000 solid wall houses in NI 83,000 no insulation - mostly private Internal Wall Insulation £5.5k to £8.5k* Savings £445pa External Wall Insulation £9.5k - £13k* Savings £475pa * Estimates from Energy Saving Trust based on heating a gas fired semi-detached dwelling with 3 bedrooms

  17. Coleraine Project – Work in Progress

  18. Solar Photovoltaic (PV) Panels Generates electricity from daylight Use it or lose it Renewable Obligation Certificates Export Tariff Costs have reduced in recent years 3kWp system costs £6k- £7k Income generation £490pa plus bill Plus lower bills Rent a Roof Schemes available Maintenance

  19. Solar PV Panels

  20. Solar Thermal Panels Heat water using light from the sun Property should be south facing Flat plate and evacuated tube Installed in 2,032 NIHE Homes – EREF fund Saves around £60-£85 per year – depends on usage pattern DETI Grant OF £320 under Renewable Heat Premium Payment Average Cost £2.5 to £4k Maintenance – Anti-freeze, valves, hoses,… *Figures from EST

  21. Solar Thermal Panel

  22. Wood Pellet Boiler Average cost - £4K - £10K (Manually fed) Grants - Renewable Heat Premium Payment £2,500

  23. Renewable EnergyHeat Pumps Ground Source Heat Pump Average cost – £8k - £10K Grants – Renewable Heat Premium Payment £3,500 Air Source Heat Pump Average cost - £6K Grants – Renewable Heat Premium Payment £1,700 See www.detini.gov.uk

  24. Economic Benefits of Energy Efficiency Lower fuel bills – increased disposable income for spend on other things Less fuel debt and fuel poverty Reduced maintenance costs Increased value of home Greater warmth/comfort Less risk of ill health Energy programmes create jobs Minimises economic cost of damage to environment

  25. Challenges Affordability of all fuels Particular issue with budgeting for oil Insulation for solid wall dwellings Whole house approach Funding required programmes Income dimension of fuel poverty Infrastructure improvements

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