Residential Sector
Territories
Table 24: Apartments Heating System Stock by Heating System Type
  1990   2015 2016
Total Apartments Heating System Stock (thousands) 5.0   8.4 8.7

Heating System Stock by Heating System Type (thousands)
Heating Oil – Normal Efficiency 3.5   0.6 0.4
Heating Oil – Medium Efficiency 0.2   4.9 5.3
Heating Oil – High Efficiency 0.0   0.0 0.0
Natural Gas – Normal Efficiency 0.3   0.1 0.0
Natural Gas – Medium Efficiency 0.0   0.6 0.6
Natural Gas – High Efficiency 0.1   0.9 0.9
Electric 0.2   0.2 0.2
Heat Pump 0.0   0.0 0.0
Other1 0.4   0.8 0.8
Wood 0.2   0.4 0.5

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

Shares (%)
Heating Oil – Normal Efficiency 69.1   6.9 4.2
Heating Oil – Medium Efficiency 4.7   57.7 60.7
Heating Oil – High Efficiency 0.0   0.0 0.0
Natural Gas – Normal Efficiency 6.9   0.7 0.5
Natural Gas – Medium Efficiency 0.9   7.6 7.1
Natural Gas – High Efficiency 1.9   10.3 10.7
Electric 3.3   2.6 2.6
Heat Pump 0.0   0.0 0.0
Other1 8.3   9.0 9.1
Wood 4.9   5.2 5.2

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

Footnotes:

1) “Other” includes coal and propane.