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| Period | Net capability (MW) | Peak demand (MW) | Reserve margin (%) | Net generated and purchased (GWh) |
|---|---|---|---|---|
| 2025 Oahu | 1,471.6 | 1,058 | 39 | 6,712.9 |
| 2025 Hawaii Island | 247.9 | 183.9 | 34.8 | 1,118.8 |
| 2025 Maui | 236 | 193.4 | 22.1 | 1,080.2 |
| 2025 Lanai | 9.4 | 6 | 56.7 | 35.7 |
| 2025 Molokai | 12 | 5.8 | 107.1 | 31.7 |
| 2025 all islands (noncoincident) | 1,976.9 | 1,447.1 | 36.6 | 8,979.3 |