Table 2 Cost of the boiler in Route 1
| Items | Annual costs (USDa) | Notes |
|---|---|---|
| Boiler for hot water | 25,000 | 200,000 USD (8 depreciation yr)− 1 |
| Running cost | 12,000 | 1000 USD month− 1 |
| Maintenance cost | 9600 | 800 USD month−1 |
| Labor cost | 35,000 | One person |
| Total | 81,600 |