2000 | 2018 | 2019 | 2020 | 2021 | ||
---|---|---|---|---|---|---|
Total Single Attached Heating System Stock (thousands) | 133.7 | 242.2 | 249.1 | 255.3 | 260.9 | |
Heating System Stock by Heating System Type (thousands) | ||||||
Heating Oil – Normal Efficiency | 0.9 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil – Medium Efficiency | 0.3 | 0.7 | 0.7 | 0.6 | 0.6 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 62.6 | 0.1 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 57.7 | 86.0 | 81.3 | 76.5 | 71.5 | |
Natural Gas – High Efficiency | 6.9 | 123.8 | 133.7 | 143.0 | 152.2 | |
Electric | 2.3 | 27.6 | 29.2 | 30.8 | 32.3 | |
Heat Pump | 0.5 | 1.6 | 1.7 | 1.8 | 1.8 | |
Other1 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | |
Wood | 0.4 | 0.3 | 0.3 | 0.3 | 0.3 | |
Dual Systems | ||||||
Wood/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Wood/Heating Oil | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas/Electric | 0.1 | 0.3 | 0.3 | 0.3 | 0.3 | |
Heating Oil/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Shares (%) | ||||||
Heating Oil – Normal Efficiency | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil – Medium Efficiency | 0.3 | 0.3 | 0.3 | 0.3 | 0.2 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 46.9 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 43.1 | 35.5 | 32.6 | 30.0 | 27.4 | |
Natural Gas – High Efficiency | 5.2 | 51.1 | 53.7 | 56.0 | 58.3 | |
Electric | 1.7 | 11.4 | 11.7 | 12.1 | 12.4 | |
Heat Pump | 0.4 | 0.7 | 0.7 | 0.7 | 0.7 | |
Other1 | 1.4 | 0.8 | 0.8 | 0.8 | 0.7 | |
Wood | 0.3 | 0.1 | 0.1 | 0.1 | 0.1 | |
Dual Systems | ||||||
Wood/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Wood/Heating Oil | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas/Electric | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
Heating Oil/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |