| Value | Category | Cases | |
|---|---|---|---|
| 1 | Gas | 467 |
5.7%
|
| 2 | Electricity | 2318 |
28.1%
|
| 3 | Wood | 1359 |
16.5%
|
| 4 | Jift (recycled olive remnants after oil pressing) | 27 |
0.3%
|
| 5 | Other (coal, animal waste) | 82 |
1%
|
| 6 | None | 3984 |
48.3%
|
| Sysmiss | 7 |