2000 | 2018 | 2019 | 2020 | 2021 | ||
---|---|---|---|---|---|---|
Total Apartments Heating System Stock (thousands) | 82.8 | 105.2 | 107.0 | 108.7 | 110.6 | |
Heating System Stock by Heating System Type (thousands) | ||||||
Heating Oil – Normal Efficiency | 25.4 | 0.6 | 0.0 | 0.0 | 0.0 | |
Heating Oil – Medium Efficiency | 22.6 | 34.9 | 35.4 | 34.8 | 35.0 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 0.4 | 0.4 | 0.4 | 0.3 | 0.3 | |
Natural Gas – High Efficiency | 0.5 | 2.5 | 2.8 | 3.0 | 3.2 | |
Electric | 20.4 | 53.1 | 54.8 | 56.7 | 58.1 | |
Heat Pump | 0.7 | 1.7 | 1.8 | 1.9 | 1.9 | |
Other1 | 1.7 | 2.4 | 2.5 | 2.6 | 2.8 | |
Wood | 10.2 | 8.6 | 8.5 | 8.5 | 8.4 | |
Dual Systems | ||||||
Wood/Electric | 0.4 | 0.6 | 0.6 | 0.6 | 0.6 | |
Wood/Heating Oil | 0.2 | 0.3 | 0.3 | 0.3 | 0.3 | |
Natural Gas/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil/Electric | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | |
Shares (%) | ||||||
Heating Oil – Normal Efficiency | 30.7 | 0.6 | 0.0 | 0.0 | 0.0 | |
Heating Oil – Medium Efficiency | 27.3 | 33.2 | 33.1 | 32.0 | 31.7 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 0.5 | 0.4 | 0.3 | 0.3 | 0.2 | |
Natural Gas – High Efficiency | 0.6 | 2.4 | 2.6 | 2.8 | 2.9 | |
Electric | 24.7 | 50.5 | 51.2 | 52.1 | 52.5 | |
Heat Pump | 0.9 | 1.6 | 1.7 | 1.7 | 1.7 | |
Other1 | 2.0 | 2.3 | 2.4 | 2.4 | 2.5 | |
Wood | 12.3 | 8.2 | 8.0 | 7.8 | 7.6 | |
Dual Systems | ||||||
Wood/Electric | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | |
Wood/Heating Oil | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | |
Natural Gas/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil/Electric | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 |