| 2000 | 2018 | 2019 | 2020 | 2021 | ||
|---|---|---|---|---|---|---|
| Total Apartments Water Heater Stock (thousands) | 74.2 | 96.1 | 97.4 | 98.2 | 99.3 | |
Water Heater Stock by Energy Source (thousands) | ||||||
| Electricity | 14.8 | 15.9 | 16.3 | 16.5 | 16.7 | |
| Natural Gas | 58.0 | 78.7 | 79.7 | 80.2 | 81.0 | |
| Heating Oil | 0.8 | 0.4 | 0.4 | 0.4 | 0.4 | |
| Steam | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
| Other1 | 0.3 | 1.0 | 1.1 | 1.1 | 1.2 | |
| Wood | 0.3 | 0.1 | 0.1 | 0.1 | 0.0 | |
Shares (%) | ||||||
| Electricity | 20.0 | 16.6 | 16.7 | 16.8 | 16.9 | |
| Natural Gas | 78.2 | 81.9 | 81.7 | 81.6 | 81.5 | |
| Heating Oil | 1.0 | 0.4 | 0.4 | 0.4 | 0.4 | |
| Steam | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
| Other1 | 0.5 | 1.0 | 1.1 | 1.1 | 1.2 | |
| Wood | 0.4 | 0.1 | 0.1 | 0.1 | 0.0 | |
| Total Mobile Homes Water Heater Stock (thousands) | 11.6 | 13.2 | 13.3 | 13.3 | 13.4 | |
Water Heater Stock by Energy Source (thousands) | ||||||
| Electricity | 2.3 | 2.2 | 2.2 | 2.2 | 2.3 | |
| Natural Gas | 9.1 | 10.8 | 10.9 | 10.9 | 10.9 | |
| Heating Oil | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
| Steam | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
| Other1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | |
| Wood | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
Shares (%) | ||||||
| Electricity | 20.0 | 16.6 | 16.7 | 16.8 | 16.9 | |
| Natural Gas | 78.2 | 81.9 | 81.7 | 81.6 | 81.5 | |
| Heating Oil | 1.0 | 0.4 | 0.4 | 0.4 | 0.4 | |
| Steam | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |
| Other1 | 0.5 | 1.0 | 1.1 | 1.1 | 1.2 | |
| Wood | 0.4 | 0.1 | 0.1 | 0.1 | 0.0 | |