| Value | Category | Cases | |
|---|---|---|---|
| 1 | electricity | 237 |
13.2%
|
| 2 | wood | 950 |
52.9%
|
| 3 | gas | 544 |
30.3%
|
| 4 | oil, petrol | 4 |
0.2%
|
| 5 | coal | 0 |
0%
|
| 6 | none /no heating | 58 |
3.2%
|
| 7 | central heating | 2 |
0.1%
|
| 8 | other | 2 |
0.1%
|