Photovoltaic system Energy costs Cost per kilowatt hour (US cents/kWh)

| _20_years | _2400_kWh_kW_p_y | _2200_kWh_kW_p_y | _2000_kWh_kW_p_y | _1800_kWh_kW_p_y | _1600_kWh_kW_p_y | _1400_kWh_kW_p_y | _1200_kWh_kW_p_y | _1000_kWh_kW_p_y | _800_kWh_kW_p_y |
|---|---|---|---|---|---|---|---|---|---|
| $200 /kW p | 0.8 | 0.9 | 1.0 | 1.1 | 1.3 | 1.4 | 1.7 | 2.0 | 2.5 |
| $600 /kW p | 2.5 | 2.7 | 3.0 | 3.3 | 3.8 | 4.3 | 5.0 | 6.0 | 7.5 |
| $1000 /kW p | 4.2 | 4.5 | 5.0 | 5.6 | 6.3 | 7.1 | 8.3 | 10.0 | 12.5 |
| $1400 /kW p | 5.8 | 6.4 | 7.0 | 7.8 | 8.8 | 10.0 | 11.7 | 14.0 | 17.5 |
| $1800 /kW p | 7.5 | 8.2 | 9.0 | 10.0 | 11.3 | 12.9 | 15.0 | 18.0 | 22.5 |
| $2200 /kW p | 9.2 | 10.0 | 11.0 | 12.2 | 13.8 | 15.7 | 18.3 | 22.0 | 27.5 |
| $2600 /kW p | 10.8 | 11.8 | 13.0 | 14.4 | 16.3 | 18.6 | 21.7 | 26.0 | 32.5 |
| $3000 /kW p | 12.5 | 13.6 | 15.0 | 16.7 | 18.8 | 21.4 | 25.0 | 30.0 | 37.5 |