Superhomes - Decarbonising Irish Homes with Deep Retrofit

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Paul Kenny CEO Tippeary Energy Agency's presentation entitled Decarbonising Irish Homes - SuperHomes Ireland at the 2017 Sustainability Summit

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Superhomes - Decarbonising Irish Homes with Deep Retrofit

  1. 1. Superhomes Decarbonising Irish Homes Paul Kenny, B.E. C. Eng. Chief Executive Tipperary Energy Agency 31st January 2017
  2. 2. • An Initiative/ project of the Tipperary Energy Agency – Non-Profit, Non-statutory Public Good Agency under Tipperary County Council – Established and works on the approach of reducing Irelands Carbon emission’s • Funded and supported by SEAI • Financially Managed/ Audited by • Supported & backed by: (EEOS) • Parallel Research: LIT, UL, IERC, UCD • Financial packages by AIB. Who is Superhomes?
  3. 3. DRIVERS FOR DEEP RETROFIT
  4. 4. 2006 House of Tomorrow Shallow Retrofit 80 homes (F to D) EU SERVE project 400 buildings E1 to B2 (HES Pilot) 2013-2015 ~1000 fuel poverty/ Shallow F to E Super-Homes D2 to A2/3 Deep Retrofit Why Superhomes? “We’re frustrated with lack of depth and continued use of fossil fuels. We need deeper, faster and renewable retrofit” 0 20 40 60 80 100 120 140 160 KWh/m2/Year Delivered Fuel Energy Vs DEAP [retrofitted houses] Theoretical Monitored Cold houses
  5. 5. What was wrong with traditional/ shallow retrofit? • Some houses were very leaky / poor air tightness. • Needed to tackle oil boilers as they are expensive to run & high environmental cost. • Many houses with damp/ mould/ condensation/ poor air quality. • Single measure grant “rules” rigid (to ensure value for money) don’t cover (cost) of challenging area’s: – Warm roof (dormers and flat roof’s) – Knee walls – Light tunnels • All houses are slightly different: – House holders need advice – House holders need education – 75% of homeowners who completed Superhomes retrofits stated “lack of trust in the advice they were receiving prevented them doing a deep retrofit before Superhomes” Drivers:Drivers for Superhomes
  6. 6. Domestic CO2 reduction options • Passive House Retrofit • At generational retrofit (30-50 years) – when large works being undertaken: – External insulation to foundation, and through soffit. – Remove ceilings, membrane installation, and replace floor. – New windows & doors, airtight to fabric. – Airtightness to 0.6-2 ACH; – HRV, External airsource stoves, heatpumps with underfloor heating. – 80k+ additional cost Vs standard deep renovation (re-wire/ plastering/ plumbing) – BER of 40-60 kWh/M2/annum. – €200-€400 to heat. – 85%+ Reduction in Energy – 1.8M houses @80k = 144Bn Euro. Superhomes: • At deep retrofit w/o long payback fabric upgrades but higher ongoing heat use using RES-E (via grid) – External insulation where required; – Achieve moderate Air tightness. – New front doors. – New windows where required; – Demand controlled extract ventilation. – Heatpumps designed to COP 3 – 20-40k cost. (28k in 2015) – BER of A3/B1 kWh/M2/annum. (67 in 2015) – €400- €600 to heat Vs €1800 – 1.8M houses @28k = 50Bn Euro. – €2Bn/ Annum Vs <€200M today
  7. 7. What was wrong with traditional/ shallow retrofit? • Minimum Insulation / AT standards. • Carefully designed ventilation system • Carefully designed room by room heat load analysis • Retrofit Heat Pump with large radiators/ UFCH • PV Optional (80% so far) • Night rate electricity • Control to do Hot Water @ night mainly • Control to maintain low flow temperatures matched with outside weather • Steady high air-quality, constant temperatures- high comfort. Drivers:What is Superhomes Technically?
  8. 8. Superhomes 2015/6 Drivers for Retrofit: Why people “want” to do deep retrofit? 0% 10% 20% 30% 40% 50% 60% 70% 80% 90%100% Improving the Comfort in my home Reducing fossil fuel use and improving the Environmental performance of my home. Cost of heating my home Improving the health of the occupants of my home Showing others the benefits of deep retrofit Its part of an overall retrofit, sensible to do it now. Drivers of retrofit
  9. 9. Drivers for Retrofit: Why people don’t do deep retrofit? 0% 20% 40% 60% 80% 100% The hassle of organising all the different works The understanding of what and how to improve my home specifically. Access to cheap finance Cost of the works Need support in selecting and supervising contractors Disruption to our home durning the works Barriers to Retrofit from Householders
  10. 10. Superhomes 2015 How do people finance deep retrofit? - Finance (loans) isn’t the only barrier – often over stated. - Several modes of finance required - None - savings. - 30-70% short term, unsecured, simple, shallower measures. - 70% plus secured, cheap, long term, more expensive measures. 0% 10% 20% 30% 40% 50% 60% No financing needed 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Level of financing required
  11. 11. Superhomes 2015/6 The real barrier to deep retrofit? - People want to see investments pay back in a reasonable time frame. - 80% of people would be happy with 5 to 7.5 years - 60% of people would be happy with 7.5 to 10 years. - Small likely market for retrofit over 10 years payback. - No loan will work for a non-economic project. 0% 20% 40% 60% 80% 100% Less than or equal to 5 5-7.5 7.5-10 10-12.5 12.5-15 15-20 >20 Cumulative Expected savings Superhomes 2015
  12. 12. Before & After: Theoretical 0 25 50 75 100 125 150 175 200 225 250 275 300 325 Change in BER level Series1 Series2 65% Reduction 65% reduction from 211 (C3) to 67kWh/m2 (A3)
  13. 13. Actual Savings: Energy 0 5000 10000 15000 20000 25000 30000 35000 1 2 3 4 5 6 AnnualEnergyUsageinkWh House Energy Utilisation Before Upgrade After Upgrade 80% saving in delivered energy use / 65% primary energy saving
  14. 14. Actual Savings: Cost 70% Saving in Delivered Energy Cost €- €500 €1,000 €1,500 €2,000 €2,500 €3,000 1 2 3 4 5 6 AnnualEnergyUsageinkWh House Energy Cost Before Upgrade After Upgrade
  15. 15. Actual Savings: Cost 64% Saving in CO2 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 1 2 3 4 5 6 AnnualEnergyUsageinkWh House CO2 Change before upgrade after upgrade
  16. 16. Satisfaction • All Homes reported much warmer homes • Most homes detailed high air quality • Most homes detailed substantial reduction in condensation, poor air quality, “stuffiness” • All homes detailed high satisfaction rating “Heat pumps ability to heat my home”. • Significant word of mouth 0 0.5 1 1.5 2 2.5 3 3.5 4 13 12 11 10 9 8 7 6 5 4 3 2 1 0 -1 COP External Temperature COP Per degree external Temperature Heating Hot water Average Winter Temperature
  17. 17. Summary • Convincing people to invest is challenging, and independent knowledge is critical. • Word of mouth works, but too few mouths can talk from experience yet. • The Superhomes process is not just a grant. • Correct technology, appropriate for house. • Advice, education, support, backup to the householder • Clarity, support, pre-sales pipeline, intermediary, knowledge for contractor. • Grant • Finance if needed. • Research, policy support, customer service feedback etc. • Testing innovation: • Electric Ireland Solar, • PV & HP Integration • Optimised Commissioning • Time of use tariffs • Connected home
  18. 18. Progress & Plans 0 20 40 60 80 100 120 140 160 2015 2016 2017 2018 Superhomes: Deep Retrofit with Renewables* Superhomes Full Poor Deep Retrofit * All subject to funding on annual basis
  19. 19. • Non profit, public good social enterprise • Partnership approach • Energy management • Renewable energy and energy efficiency • Procurement, project mgmt. • Cost effective, value driven • Paul Kenny • Chief Executive • T: 052 7443090 • F: 052 7443012 • E: paul@tippenergy.ie • W: www.Tippenergy.ie • W: www.superhomes.ie Tipperary Energy Agency

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