2000 | 2018 | 2019 | 2020 | 2021 | ||
---|---|---|---|---|---|---|
Total Apartments Heating System Stock (thousands) | 5.8 | 9.5 | 9.7 | 9.9 | 10.1 | |
Heating System Stock by Heating System Type (thousands) | ||||||
Heating Oil – Normal Efficiency | 2.0 | 0.3 | 0.4 | 0.4 | 0.3 | |
Heating Oil – Medium Efficiency | 1.8 | 5.9 | 5.9 | 6.1 | 6.3 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Medium Efficiency | 0.4 | 0.6 | 0.6 | 0.5 | 0.5 | |
Natural Gas – High Efficiency | 0.2 | 1.1 | 1.2 | 1.3 | 1.4 | |
Electric | 0.2 | 0.3 | 0.3 | 0.3 | 0.3 | |
Heat Pump | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Other1 | 0.6 | 0.9 | 0.9 | 0.9 | 0.9 | |
Wood | 0.3 | 0.5 | 0.5 | 0.5 | 0.5 | |
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 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Shares (%) | ||||||
Heating Oil – Normal Efficiency | 34.3 | 3.0 | 4.2 | 3.6 | 2.8 | |
Heating Oil – Medium Efficiency | 30.8 | 62.0 | 60.8 | 61.3 | 61.7 | |
Heating Oil – High Efficiency | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Natural Gas – Normal Efficiency | 5.7 | 0.2 | 0.1 | 0.1 | 0.1 | |
Natural Gas – Medium Efficiency | 6.9 | 6.1 | 5.7 | 5.2 | 4.8 | |
Natural Gas – High Efficiency | 4.2 | 11.6 | 12.2 | 12.8 | 13.8 | |
Electric | 3.3 | 2.6 | 2.6 | 2.6 | 2.6 | |
Heat Pump | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Other1 | 9.6 | 9.1 | 9.1 | 9.1 | 9.1 | |
Wood | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | |
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 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Heating Oil/Electric | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |