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Recognizing Success

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  1. Recognizing Success Energy Use & Greenhouse Gas Emissions in Canadian Homes 1990 – 2010 Canadian Renovators’ Council, October 2012

  2. Three Part Report: • CHBA’s Annual update on Residential Sector performance. • Closer examination of how new homes have changed based on CHBA/CanmetENERGY analysis. • Future potential for energy retrofitting.

  3. Residential Share of Canada’s GHGs 1990 2010 Source: NIR/EC 2012

  4. Sector Changes in GHG Emissions1990 - 2009 Source: CEUD 2012

  5. Trends in Stock and Energy Use1990 = 0 Source: CEUD 2012

  6. Energy Intensity Trends1990 = 0 Source: CEUD 2012

  7. Efficiency Trends by House Vintage

  8. How Have New Homes Changed?

  9. Comparing “Apples to Apples” • Total stock trends are useful, but they don’t tell us much about how new homes have changed over time. • Existing home energy performance is a ‘moving target’. • When comparing old and new homes, what do we learn if we base this on the ‘as built’, rather than ‘as found’ specifications?

  10. Our “Apple” • 2,100 sq. ft. two-storey home in Ottawa circa 1973 (Four-Square). • Initial “As Built” specifications from CMHC/HUDAC costing studies of that time. • Additional specifications generated by CanmentENERGY, OBC 2012, R-2000 (2012). • Only envelope and mechanical specifications altered to those ‘typical’ of new construction in each period. • ‘As Found’ specifications from initial (pre-grant) ERS evaluation. • All data generated using HOT2000 V. 10.51

  11. ‘As Built’ = ERS 41 • ‘As Found’ = ERS 63 = 28.7% improvement • ‘Post ecoENERGY Grant’ = ERS 72 = 44.5% improvement • Same home built to 2012 OBC would consume 66% less energy than mid-1970s spec.

  12. EnerGuide Ratings & Percentage Efficiency Gain

  13. Some ‘Low Hanging Fruit’ Remains

  14. Filling Out the Household Picture:a 69’ Chevy Impala in the driveway

  15. So How’s Detroit Doing? 1969 Chevy Impala 2012 Chevy Impala

  16. 15.8% Improvement in 43 Years

  17. . . . and the Impala’s a ‘success story’

  18. On “Apples to Apples” Basis: 15.8% Increase in ‘Combined’ Fuel Efficiency 66% decrease in total energy consumption (ERS 41 to ERS 79) 78.5% decrease in space heating energy consumption

  19. Questions/Discussion?