| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 0 |
0%
|
| 1 | Central heating | 2 |
0%
|
| 2 | Electricity | 767 |
14.8%
|
| 3 | Natural gas | 2063 |
39.8%
|
| 4 | Liquefied gas | 5 |
0.1%
|
| 5 | Oil and diesel | 1 |
0%
|
| 6 | Wood | 1941 |
37.4%
|
| 9 | Other | 405 |
7.8%
|