Residential Sector
Ontario1
Table 7: Space Heating Secondary Energy Use and GHG Emissions by Vintage
  2000   2018 2019 2020 2021
Total Space Heating Energy Use (PJ) 344.7   371.6 353.5 314.3 298.7

Energy Use by Vintage (PJ)
Before 1946 98.6   81.4 76.5 66.9 62.5
1946–1960 39.7   37.9 35.7 31.2 29.2
1961–1977 76.4   67.8 64.0 56.2 52.8
1978–1983 39.1   35.3 32.7 28.8 27.0
1984–1995 74.9   66.6 62.6 55.1 51.8
1996–2000 16.1   16.5 15.6 13.7 12.9
2001–2005 0.0   23.9 22.5 19.8 18.7
2006–2010 0.0   17.7 16.7 14.7 13.8
2011–2015 0.0   14.2 13.4 11.8 11.1
2016_2020 0.0   10.3 13.9 16.2 15.3
2021_after 0.0   0.0 0.0 0.0 3.6

Shares (%)
Before 1946 28.6   21.9 21.6 21.3 20.9
1946–1960 11.5   10.2 10.1 9.9 9.8
1961–1977 22.2   18.2 18.1 17.9 17.7
1978–1983 11.3   9.5 9.3 9.2 9.0
1984–1995 21.7   17.9 17.7 17.5 17.3
1996–2000 4.7   4.4 4.4 4.4 4.3
2001–2005 0.0   6.4 6.4 6.3 6.3
2006–2010 0.0   4.8 4.7 4.7 4.6
2011–2015 0.0   3.8 3.8 3.7 3.7
2016_2020 0.0   2.8 3.9 5.2 5.1
2021_after 0.0   0.0 0.0 0.0 1.2

Activity
Total Floor Space (million m2) 597.3   824.0 841.5 860.4 880.2
Energy Intensity (GJ/m2) 0.58   0.45 0.42 0.37 0.34
Total Space Heating GHG Emissions Excluding Electricity (Mt of CO2e) 14.9   15.4 14.3 12.7 12.0

GHG Emissions by Vintage (Mt of CO2e)
Before 1946 4.3   3.4 3.1 2.7 2.5
1946–1960 1.7   1.6 1.4 1.3 1.2
1961–1977 3.3   2.8 2.6 2.3 2.1
1978–1983 1.7   1.5 1.3 1.2 1.1
1984–1995 3.2   2.8 2.5 2.2 2.1
1996–2000 0.7   0.7 0.6 0.6 0.5
2001–2005 0.0   1.0 0.9 0.8 0.8
2006–2010 0.0   0.7 0.7 0.6 0.6
2011–2015 0.0   0.6 0.5 0.5 0.4
2016_2020 0.0   0.4 0.6 0.7 0.6
2021_after 0.0   0.0 0.0 0.0 0.1
GHG Intensity (tonne/TJ) 43.2   41.3 40.6 40.4 40.2
Heating Degree-Day Index 0.94   0.92 0.96 0.84 0.79

Footnotes:

1) Data on GHG emissions are presented excluding GHG emissions related to electricity production only.