Residential Sector
Ontario
Table 24: Apartments Heating System Stock by Heating System Type
  1990   2011 2012 2013 2014 2015
Total Apartments Heating System Stock (thousands) 1,135.5   1,534.1 1,553.7 1,603.9 1,623.9 1,656.2

Heating System Stock by Heating System Type (thousands)
Heating Oil – Normal Efficiency 173.0   13.1 10.7 8.7 6.1 3.3
Heating Oil – Medium Efficiency 2.3   82.8 88.8 93.9 97.8 102.6
Heating Oil – High Efficiency 0.0   0.0 0.0 0.0 0.0 0.0
Natural Gas – Normal Efficiency 599.1   113.1 88.3 67.3 46.3 29.2
Natural Gas – Medium Efficiency 26.7   376.2 370.5 362.3 350.7 335.5
Natural Gas – High Efficiency 55.5   613.5 652.2 717.0 763.6 818.8
Electric 234.1   256.1 262.5 270.8 273.9 279.2
Heat Pump 6.9   18.3 19.0 20.0 20.8 21.7
Other1 7.0   17.4 17.6 18.1 18.3 18.7
Wood 26.5   34.7 35.1 36.3 36.7 37.4

Dual Systems
Wood/Electric 0.7   1.0 1.0 1.0 1.1 1.1
Wood/Heating Oil 0.8   1.2 1.2 1.2 1.2 1.3
Natural Gas/Electric 0.7   3.8 3.9 4.0 4.2 4.3
Heating Oil/Electric 2.1   3.0 3.0 3.1 3.2 3.2

Shares (%)
Heating Oil – Normal Efficiency 15.2   0.9 0.7 0.5 0.4 0.2
Heating Oil – Medium Efficiency 0.2   5.4 5.7 5.9 6.0 6.2
Heating Oil – High Efficiency 0.0   0.0 0.0 0.0 0.0 0.0
Natural Gas – Normal Efficiency 52.8   7.4 5.7 4.2 2.9 1.8
Natural Gas – Medium Efficiency 2.4   24.5 23.8 22.6 21.6 20.3
Natural Gas – High Efficiency 4.9   40.0 42.0 44.7 47.0 49.4
Electric 20.6   16.7 16.9 16.9 16.9 16.9
Heat Pump 0.6   1.2 1.2 1.3 1.3 1.3
Other1 0.6   1.1 1.1 1.1 1.1 1.1
Wood 2.3   2.3 2.3 2.3 2.3 2.3

Dual Systems
Wood/Electric 0.1   0.1 0.1 0.1 0.1 0.1
Wood/Heating Oil 0.1   0.1 0.1 0.1 0.1 0.1
Natural Gas/Electric 0.1   0.2 0.3 0.3 0.3 0.3
Heating Oil/Electric 0.2   0.2 0.2 0.2 0.2 0.2

Footnotes:

1) “Other” includes coal and propane.