| Value | Category | Cases | |
|---|---|---|---|
| 1 | Electricity | 93 |
0.5%
|
| 2 | Gas | 108 |
0.6%
|
| 3 | Kerosene | 3085 |
16.8%
|
| 4 | Wood | 14804 |
80.7%
|
| 5 | Coal | 265 |
1.4%
|