| Value | Category | Cases | |
|---|---|---|---|
| 1 | Electricity from mains | 18653 |
93.5%
|
| 2 | Generator | 14 |
0.1%
|
| 3 | Gas | 39 |
0.2%
|
| 4 | Paraffin | 192 |
1%
|
| 7 | Candles | 724 |
3.6%
|
| 9 | Solar energy | 186 |
0.9%
|
| 10 | None | 32 |
0.2%
|
| 11 | Other | 100 |
0.5%
|