| Parameter | Value | Parameter | Value |
| Power plant capacity (MW) | 100 | Plant’s land area (m2) | 1059252.5 |
| Module efficiency | 14% | Labor rate ($/h) | 6 |
| Labor rate ($/yr) | 850 | Supervisory labor rate ($/h) | 12 |
| Labor hours/year per laborer | 1750 | Labor hours/day | 5.1 |
| Supervisory labor rate ($/yr) | 1700 | Water needed (L) | 423,701 |
| No. of laborers per supervisor | 20 | Cleaning time (h) | 235.39 |
| Electricity Price ($/kWh) | 0.054 |
|
|
| Cost of water ($/L) | 0.0024 |
|
|
| Cost of other materials ($/m) | 0.0054 |
|
|
| Manual |
| Automatic |
|
| Cleaning time per panel (min) | 0.5 | Initial investment ($) | 91,000 |
| Water usage (L/m2) | 0.4 | Water usage (L/m2) | 0.6 |
|
|
| O&M costs per hour ($) | 7 |
|
|
| Cleaning rate (m2/h) | 4500 |
|
|
| Lifetime (yr) | 10 |
|
|
| Operators per machine per shift | 1 |
| Cleaning cost calculations |
| Cleaning cost calculations |
|
| Total labor hours per cleaning cycle | 3000 | Total labor hours per cleaning cycle | 160 |
|
|
| Allocated expenses ($/h) | 3.2 |
| Total cost per cleaning cycle | Total cost per cleaning cycle | ||
| Labor ($) | 18000.00 | Labor ($) | 960.00 |
| Water ($) | 1016.88 | Water ($) | 1525.32 |
| Other material ($) | 3827.00 | Other material ($) | 1100.00 |
|
|
| Allocated capital cost ($) | 512.00 |
| Total ($) | 22843.88 | Total ($) | 4097.32 |
| Cost per cleaning cycle ($/MW) | 228.44 | Cost per cleaning cycle ($/MW) | 40.97 |