| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 161947 | 
                                    
                                    31.2%
                                 | 
| 2 | Gaz | 89436 | 
                                    
                                    17.2%
                                 | 
| 3 | Gazoline | 61285 | 
                                    
                                    11.8%
                                 | 
| 4 | Electrictiy | 40968 | 
                                    
                                    7.9%
                                 | 
| 5 | Wood | 155995 | 
                                    
                                    30%
                                 | 
| 6 | Solar | 6913 | 
                                    
                                    1.3%
                                 | 
| 7 | Others | 1266 | 
                                    
                                    0.2%
                                 | 
| 9 | Not Stated | 1584 | 
                                    
                                    0.3%
                                 |