| Value | Category | Cases | |
|---|---|---|---|
| 1 | Electrical grid | 33 |
36.3%
|
| 2 | Generator | 0 |
0%
|
| 3 | Car battery | 0 |
0%
|
| 4 | Petrol | 0 |
0%
|
| 5 | Gas | 54 |
59.3%
|
| 6 | Solar panel | 3 |
3.3%
|
| 9 | Other | 1 |
1.1%
|
| Sysmiss | 165 |