| Value | Category | Cases | |
|---|---|---|---|
| 1 | City power | 1199 | 
                                    
                                    26.6%
                                 | 
| 2 | Generator | 102 | 
                                    
                                    2.3%
                                 | 
| 3 | Kerosene | 1003 | 
                                    
                                    22.3%
                                 | 
| 4 | Candle | 24 | 
                                    
                                    0.5%
                                 | 
| 5 | Battery | 2105 | 
                                    
                                    46.8%
                                 | 
| 6 | Other | 67 | 
                                    
                                    1.5%
                                 |