| Value | Category | Cases | |
|---|---|---|---|
| 1 | Electricity | 111 |
0.6%
|
| 2 | Gas | 86 |
0.5%
|
| 3 | Kerosene | 2763 |
14.8%
|
| 4 | Wood | 15329 |
82.4%
|
| 5 | Coal | 322 |
1.7%
|
| . | 206 |