| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 469 |
40.1%
|
| 1 | Grid power | 13 |
1.1%
|
| 2 | Generator | 627 |
53.6%
|
| 3 | Solar power | 44 |
3.8%
|
| 98 | Other | 16 |
1.4%
|
| Sysmiss | 244 |