2000 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | ||
---|---|---|---|---|---|---|---|---|---|---|
Heating System Stock Share by System Type (%)a | ||||||||||
Heating Oil – Normal Efficiency | 3.7 | 0.3 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.0 | |
Heating Oil – Medium Efficiency | 6.3 | 6.8 | 6.7 | 6.6 | 6.4 | 6.2 | 6.0 | 5.7 | 5.4 | |
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 | 22.5 | 6.0 | 4.6 | 3.3 | 2.2 | 1.2 | 0.7 | 0.3 | 0.2 | |
Natural Gas – Medium Efficiency | 15.2 | 21.0 | 20.6 | 20.1 | 19.7 | 19.1 | 18.3 | 17.4 | 16.4 | |
Natural Gas – High Efficiency | 8.8 | 19.9 | 21.4 | 22.8 | 24.1 | 25.4 | 26.6 | 27.8 | 28.9 | |
Electric | 27.9 | 30.2 | 30.7 | 31.2 | 31.7 | 32.2 | 32.6 | 33.0 | 33.4 | |
Heat Pump | 3.4 | 4.4 | 4.5 | 4.6 | 4.6 | 4.7 | 4.8 | 4.8 | 4.9 | |
Other1 | 1.1 | 1.1 | 1.1 | 1.2 | 1.2 | 1.2 | 1.3 | 1.3 | 1.4 | |
Wood | 2.2 | 1.6 | 1.5 | 1.4 | 1.3 | 1.2 | 1.1 | 1.1 | 1.0 | |
Dual Systems | ||||||||||
Wood/Electric | 4.9 | 4.7 | 4.7 | 4.7 | 4.6 | 4.6 | 4.6 | 4.5 | 4.5 | |
Wood/Heating Oil | 2.3 | 2.3 | 2.3 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | |
Natural Gas/Electric | 0.4 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | |
Heating Oil/Electric | 1.1 | 1.2 | 1.2 | 1.2 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 |
Footnotes:
1) “Other” includes coal and propane.
Source: