| Value | Category | Cases | |
|---|---|---|---|
| 1 | Electricity from mains | 992 |
99.4%
|
| 2 | Electricity from generator | 0 |
0%
|
| 3 | Gas | 1 |
0.1%
|
| 4 | Paraffin | 2 |
0.2%
|
| 7 | Candles | 3 |
0.3%
|
| 9 | Solar energy | 0 |
0%
|
| 10 | Other | 0 |
0%
|
| 11 | None | 0 |
0%
|
| 99 | Unspecified | 0 |
0%
|