Residential Sector
Alberta
Table 24: Apartments Heating System Stock by Heating System Type
  1990   1991 1992 1993 1994 1995 1996 1997 1998
Total Apartments Heating System Stock (thousands) 219.9   222.3 223.1 227.7 228.8 233.1 233.7 233.5 234.4

Heating System Stock by Heating System Type (thousands)
Heating Oil – Normal Efficiency 3.4   3.4 3.2 3.1 2.9 2.7 2.4 2.2 1.9
Heating Oil – Medium Efficiency 0.1   0.2 0.2 0.2 0.3 0.3 0.3 0.3 0.3
Heating Oil – High Efficiency 0.0   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Natural Gas – Normal Efficiency 191.8   190.2 184.3 176.5 169.5 162.2 157.4 148.6 140.9
Natural Gas – Medium Efficiency 13.0   16.5 24.4 35.2 43.3 53.7 61.1 67.5 74.4
Natural Gas – High Efficiency 0.0   0.0 0.2 0.8 1.4 2.6 3.6 4.8 6.2
Electric 3.6   3.3 3.3 3.3 3.2 3.0 2.8 3.0 3.3
Heat Pump 1.1   1.8 0.6 0.8 0.5 0.5 0.5 0.6 0.9
Other1 4.7   4.8 4.8 4.8 4.7 4.5 4.3 4.1 3.9
Wood 1.2   1.1 1.0 1.0 1.0 0.9 0.8 0.8 0.8

Dual Systems
Wood/Electric 0.0   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Wood/Heating Oil 0.0   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Natural Gas/Electric 0.8   0.8 0.9 2.0 2.0 2.7 0.4 1.7 1.8
Heating Oil/Electric 0.0   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Shares (%)
Heating Oil – Normal Efficiency 1.5   1.5 1.5 1.3 1.3 1.2 1.0 0.9 0.8
Heating Oil – Medium Efficiency 0.1   0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Heating Oil – High Efficiency 0.0   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Natural Gas – Normal Efficiency 87.2   85.6 82.6 77.5 74.1 69.6 67.4 63.6 60.1
Natural Gas – Medium Efficiency 5.9   7.4 10.9 15.5 18.9 23.0 26.1 28.9 31.7
Natural Gas – High Efficiency 0.0   0.0 0.1 0.3 0.6 1.1 1.6 2.0 2.7
Electric 1.7   1.5 1.5 1.5 1.4 1.3 1.2 1.3 1.4
Heat Pump 0.5   0.8 0.3 0.3 0.2 0.2 0.2 0.2 0.4
Other1 2.2   2.2 2.2 2.1 2.1 1.9 1.8 1.7 1.6
Wood 0.5   0.5 0.5 0.5 0.4 0.4 0.4 0.3 0.3

Dual Systems
Wood/Electric 0.0   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Wood/Heating Oil 0.0   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Natural Gas/Electric 0.4   0.4 0.4 0.9 0.9 1.2 0.1 0.7 0.8
Heating Oil/Electric 0.0   0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Footnotes:

1) “Other” includes coal and propane.