| Value | Category |
|---|---|
| 1 | Alcohol/ethnanol |
| 2 | Gassoline/diesel |
| 3 | Parafine/petroleum |
| 4 | Charcoal |
| 5 | Wood |
| 6 | Straw/shrubs/grass |
| 7 | Agricultural crop |
| 8 | Animal dung |
| 9 | Processed biomass fuels |
| 10 | Pellets or wood chips |
| 11 | Garbage/plastic |
| 12 | Sawdust |
| 95 | No food cooked in house |
| 96 | Other |