| Year | 2012 | 2020 | 2030 |
| Photovoltaic panels (yen/W) | 100 | 75 | 50 |
| BOS* (yen/W) | 150 | 100 | 70 |
| Photovoltaic systems (yen/W) | 250 | 175 | 120 |
| Efficiency (%) | 15 | 20 | 30 |