Residential Sector
Ontario
Table 8: Space Heating Secondary Energy Use by System Type
  2000   2018 2019 2020 2021
Total Space Heating Energy Use (PJ) 344.7   371.6 353.5 314.3 298.7

Energy Use by System Type (PJ)
Heating Oil – Normal Efficiency 11.3   0.0 0.0 0.0 0.0
Heating Oil – Medium Efficiency 13.6   6.0 4.8 3.8 3.3
Heating Oil – High Efficiency 0.0   0.0 0.0 0.0 0.0
Natural Gas – Normal Efficiency 130.4   0.0 0.0 0.0 0.0
Natural Gas – Medium Efficiency 66.9   72.0 61.4 48.7 41.0
Natural Gas – High Efficiency 47.3   208.9 203.4 185.3 179.0
Electric 32.9   35.5 38.0 34.3 33.1
Heat Pump 6.3   9.7 10.6 9.8 9.6
Other1 4.8   7.8 7.9 7.9 8.9
Wood 3.2   2.0 1.6 1.4 1.3

Dual Systems
Wood/Electric 16.4   18.7 15.9 14.4 13.8
Wood/Heating Oil 8.9   7.4 6.5 5.8 5.8
Natural Gas/Electric 1.7   2.8 2.6 2.4 2.2
Heating Oil/Electric 0.9   0.8 0.8 0.7 0.7

Shares (%)
Heating Oil – Normal Efficiency 3.3   0.0 0.0 0.0 0.0
Heating Oil – Medium Efficiency 4.0   1.6 1.4 1.2 1.1
Heating Oil – High Efficiency 0.0   0.0 0.0 0.0 0.0
Natural Gas – Normal Efficiency 37.8   0.0 0.0 0.0 0.0
Natural Gas – Medium Efficiency 19.4   19.4 17.4 15.5 13.7
Natural Gas – High Efficiency 13.7   56.2 57.5 58.9 59.9
Electric 9.6   9.6 10.8 10.9 11.1
Heat Pump 1.8   2.6 3.0 3.1 3.2
Other1 1.4   2.1 2.2 2.5 3.0
Wood 0.9   0.5 0.5 0.4 0.4

Dual Systems
Wood/Electric 4.8   5.0 4.5 4.6 4.6
Wood/Heating Oil 2.6   2.0 1.8 1.8 1.9
Natural Gas/Electric 0.5   0.7 0.7 0.8 0.7
Heating Oil/Electric 0.3   0.2 0.2 0.2 0.2

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
Heat Gains (PJ) 32.4   31.3 32.8 29.9 28.9
Heating Degree-Day Index 0.94   0.92 0.96 0.84 0.79

Footnotes:

1) “Other” includes coal and propane.