Residential Sector
Atlantic
Table 23: Single Attached Heating System Stock by Heating System Type
  1990   2010 2011 2012 2013 2014 2015
Total Single Attached Heating System Stock (thousands) 51.9   74.5 76.1 77.9 80.5 81.1 82.2

Heating System Stock by Heating System Type (thousands)
Heating Oil – Normal Efficiency 21.4   1.9 1.3 0.8 0.3 0.3 0.2
Heating Oil – Medium Efficiency 1.1   14.2 14.2 14.6 15.1 14.9 15.5
Heating Oil – High Efficiency 0.0   0.0 0.0 0.0 0.0 0.0 0.0
Natural Gas – Normal Efficiency 0.1   0.1 0.1 0.0 0.0 0.0 0.0
Natural Gas – Medium Efficiency 0.0   0.3 0.3 0.3 0.3 0.3 0.3
Natural Gas – High Efficiency 0.0   0.8 0.9 1.0 1.4 1.4 1.5
Electric 18.3   46.9 48.3 49.3 48.9 49.7 50.1
Heat Pump 0.4   2.3 2.4 2.6 2.8 2.9 3.0
Other1 0.7   0.6 0.6 0.7 1.0 1.0 1.0
Wood 7.9   5.1 5.5 6.0 8.1 8.1 8.1

Dual Systems
Wood/Electric 1.0   1.1 1.1 1.2 1.2 1.2 1.2
Wood/Heating Oil 0.7   0.7 0.7 0.7 0.7 0.7 0.7
Natural Gas/Electric 0.0   0.0 0.0 0.0 0.0 0.0 0.0
Heating Oil/Electric 0.2   0.6 0.6 0.6 0.6 0.6 0.7

Shares (%)
Heating Oil – Normal Efficiency 41.2   2.5 1.7 1.0 0.4 0.3 0.2
Heating Oil – Medium Efficiency 2.1   19.0 18.7 18.7 18.8 18.4 18.8
Heating Oil – High Efficiency 0.0   0.0 0.0 0.0 0.0 0.0 0.0
Natural Gas – Normal Efficiency 0.2   0.1 0.1 0.1 0.0 0.0 0.0
Natural Gas – Medium Efficiency 0.0   0.5 0.4 0.4 0.4 0.4 0.4
Natural Gas – High Efficiency 0.1   1.1 1.1 1.2 1.7 1.8 1.8
Electric 35.3   63.0 63.5 63.4 60.8 61.3 60.9
Heat Pump 0.7   3.1 3.2 3.3 3.5 3.6 3.7
Other1 1.4   0.8 0.8 0.9 1.2 1.2 1.2
Wood 15.2   6.8 7.2 7.8 10.0 9.9 9.9

Dual Systems
Wood/Electric 1.9   1.5 1.5 1.5 1.5 1.5 1.4
Wood/Heating Oil 1.3   1.0 0.9 0.9 0.9 0.9 0.9
Natural Gas/Electric 0.0   0.0 0.0 0.0 0.0 0.0 0.0
Heating Oil/Electric 0.5   0.8 0.8 0.8 0.8 0.8 0.8

Footnotes:

1) “Other” includes coal and propane.