| Value | Category | Cases | |
|---|---|---|---|
| 1 | electricity | 264 |
14.8%
|
| 2 | wood | 980 |
55.1%
|
| 3 | gas | 477 |
26.8%
|
| 4 | oil, petrol | 8 |
0.4%
|
| 5 | coal | 2 |
0.1%
|
| 6 | none / no heating | 45 |
2.5%
|
| 7 | other | 4 |
0.2%
|
| Sysmiss | 2 |