Power plants in Hawaii County, Hawaii
15 operating power plants in Hawaii County, Hawaii, with 489 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Plants
15
Nameplate capacity
489 MW
Net generation, 2025
1.09 TWh
14 of 15 plants reported
Largest power plants in Hawaii County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | KeaholeOil | 89 | 320 | 40.9% |
| 2 | Hale Kuawehi Solar HybridSolar and battery storage | 74 | 65.0* | – |
| 3 | Hamakua Energy PlantOil | 66 | 88.2 | 15.3% |
| 4 | AES Waikoloa Solar HybridSolar and battery storage | 60 | 61.0 | 24.1% |
| 5 | Puna Geothermal Venture IGeothermal | 48 | 208 | 46.5% |
| 6 | PunaOil | 39 | 58.1 | 16.9% |
| 7 | W H HillOil | 37 | 145 | 44.7% |
| 8 | KanoelehuaOil | 21 | 7.2 | 3.9% |
| 9 | Pakini Nui Wind FarmWind | 21 | 115 | 62.4% |
| 10 | Hawi Wind FarmWind | 11 | – | – |
| 11 | Wailuku River HydroelectricHydro | 10 | 14.1 | 15.5% |
| 12 | WaimeaOil | 7.5 | 6.2 | 9.5% |
| 13 | PuueoHydro | 3.1 | 1.0 | 3.8% |
| 14 | Mauna Loa Macadamia NutSolar and battery storage | 1.3 | 1.4 | 20.5% |
| 15 | Waiau HydroHydro | 1.0 | 0.0 | – |
* Fewer than 12 months of 2025 reported, so the total is partial.
MW is the nameplate capacity of operating generators and batteries. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources
More power plant lists for Hawaii
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