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Cooking fuel
| Classification | Code | Levels |
|---|---|---|
| Unprocessed biomass fuel | 1 | Agricultural crop, animal dung, other, straw/shrubs/grass |
| Charcoal/coal/kerosene | 2 | Kerosene, kerosene/paraffin, paraffin/kerosene, wood, charcoal, coal, lignite |
| Natural gas/lpg/biogas | 3 | Biogas, bottled gas, LPG, natural gas, LPG |
| Electricity | 4 | Electricity, electricity from generator, electricity from other source, solar energy, solar power |
| Clean | 5 | No food cooked in house |
