Residential Sector
Alberta
Table 24: Apartments Heating System Stock by Heating System Type
  1990   2012 2013 2014 2015
Total Apartments Heating System Stock (thousands) 220.5   321.3 340.3 353.8 370.2

Heating System Stock by Heating System Type (thousands)
Heating Oil – Normal Efficiency 3.4   0.4 0.3 0.2 0.2
Heating Oil – Medium Efficiency 0.1   0.9 1.1 1.2 1.3
Heating Oil – High Efficiency 0.0   0.0 0.0 0.0 0.0
Natural Gas – Normal Efficiency 192.4   11.4 7.6 4.2 1.5
Natural Gas – Medium Efficiency 13.0   95.2 92.9 89.7 85.6
Natural Gas – High Efficiency 0.0   45.6 59.7 71.2 86.3
Electric 3.6   160.6 171.1 179.3 187.0
Heat Pump 1.1   1.6 1.8 1.9 2.0
Other1 4.8   2.1 2.2 2.3 2.4
Wood 1.2   0.5 0.5 0.5 0.6

Dual Systems
Wood/Electric 0.0   0.0 0.0 0.0 0.0
Wood/Heating Oil 0.0   0.0 0.0 0.0 0.0
Natural Gas/Electric 0.8   3.0 3.1 3.2 3.2
Heating Oil/Electric 0.0   0.0 0.0 0.0 0.0

Shares (%)
Heating Oil – Normal Efficiency 1.5   0.1 0.1 0.1 0.0
Heating Oil – Medium Efficiency 0.1   0.3 0.3 0.3 0.4
Heating Oil – High Efficiency 0.0   0.0 0.0 0.0 0.0
Natural Gas – Normal Efficiency 87.3   3.5 2.2 1.2 0.4
Natural Gas – Medium Efficiency 5.9   29.6 27.3 25.4 23.1
Natural Gas – High Efficiency 0.0   14.2 17.5 20.1 23.3
Electric 1.7   50.0 50.3 50.7 50.5
Heat Pump 0.5   0.5 0.5 0.5 0.5
Other1 2.2   0.6 0.7 0.7 0.7
Wood 0.5   0.1 0.1 0.2 0.1

Dual Systems
Wood/Electric 0.0   0.0 0.0 0.0 0.0
Wood/Heating Oil 0.0   0.0 0.0 0.0 0.0
Natural Gas/Electric 0.4   0.9 0.9 0.9 0.9
Heating Oil/Electric 0.0   0.0 0.0 0.0 0.0

Footnotes:

1) “Other” includes coal and propane.