| Value | Category |
|---|---|
| -77 | Other (Specify) |
| 1 | Electricity |
| 2 | Paraffin Pressure lamp |
| 3 | Paraffin Lantern |
| 4 | Paraffin Tin lamp |
| 5 | Gas Lamp |
| 6 | Fuel wood |
| 7 | Solar |
| 8 | Torch/Spotlight-Solar Charged |
| 9 | Torch/Spot light-Dry cells |
| 10 | Candle |
| 11 | Battery(Car/Charged) |
| z | Not applicable |