| Value | Category | 
|---|---|
| 1 | Electricity | 
| 2 | Solar energy | 
| 3 | Liquefied petroleum gas (LPG)/cooking gas | 
| 4 | Piped natural gas | 
| 5 | Biogas | 
| 9 | Coal/lignite | 
| 10 | Charcoal | 
| 11 | Wood | 
| 12 | Straw/shrubs/grass | 
| 13 | Agricultural crop | 
| 14 | Animal dung/waste | 
| 95 | No food cooked in house | 
| 96 | Other | 
| 97 | Not a dejure resident |