2000 | 2017 | 2018 | 2019 | ||
---|---|---|---|---|---|
Heating System Stock Share by System Type (%)a | |||||
Heating Oil – Normal Efficiency | 3.7 | 0.0 | 0.0 | 0.0 | |
Heating Oil – Medium Efficiency | 6.3 | 5.0 | 4.6 | 4.2 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 22.5 | 0.1 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 15.2 | 15.2 | 14.1 | 13.0 | |
Natural Gas – High Efficiency | 8.8 | 29.9 | 31.1 | 32.2 | |
Electric | 27.9 | 33.9 | 34.2 | 34.5 | |
Heat Pump | 3.4 | 5.0 | 5.1 | 5.2 | |
Other1 | 1.1 | 1.5 | 1.5 | 1.5 | |
Wood | 2.2 | 0.9 | 0.9 | 0.9 | |
Dual Systems | |||||
Wood/Electric | 4.9 | 4.5 | 4.5 | 4.5 | |
Wood/Heating Oil | 2.3 | 2.1 | 2.1 | 2.1 | |
Natural Gas/Electric | 0.4 | 0.5 | 0.5 | 0.5 | |
Heating Oil/Electric | 1.1 | 1.3 | 1.3 | 1.3 |
Footnotes:
1) “Other” includes coal and propane.
Source: