| Calculation variant | Gross electricity generation efficiency, [%] | Drop in efficiency compared to variant 1, percentage points |
| 1 | 59.54 | - |
| (MAX) 2 | 53.84 | 5.7 |
| (REF) 3 | 52.61 | 6.93 |
| (MIN) 4 | 49.18 | 10.36 |