Power plants in Honolulu County, Hawaii
31 operating power plants in Honolulu County, Hawaii, with 2,382 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Plants
31
Nameplate capacity
2,382 MW
Net generation, 2025
6.56 TWh
30 of 31 plants reported
Largest power plants in Honolulu County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | KaheOil | 610 | 2,809 | 52.6% |
| 2 | WaiauOil | 375 | 975 | 29.7% |
| 3 | Kalaeloa Cogen PlantOil | 299 | 1,424 | 54.3% |
| 4 | Kapolei Energy StorageBattery storage | 185 | −18.7 | – |
| 5 | Ho'Ohana Solar 1Solar and battery storage | 117 | 40.4* | – |
| 6 | Campbell Industrial ParkOil | 113 | 93.6 | 9.5% |
| 7 | H PowerMunicipal solid waste | 100 | 318 | 36.3% |
| 8 | Mililani South Solar FarmSolar and battery storage | 78 | 62.6 | 20.7% |
| 9 | Waiawa Solar Power HybridSolar and battery storage | 72 | 58.0 | 20.1% |
| 10 | Kawailoa WindWind | 69 | 93.2 | 15.4% |
| 11 | Schofield Generating StationBiomass | 50 | 9.3 | 2.1% |
| 12 | Kawailoa SolarSolar | 49 | 73.9 | 17.2% |
| 13 | Waipio SolarSolar | 46 | 99.0 | 24.6% |
| 14 | Kahuku Wind Power LLCWind | 30 | 53.1 | 20.2% |
| 15 | EE Waianae Solar ProjectSolar | 28 | 59.4 | 24.0% |
| 16 | Na Pua Makani Wind ProjectWind | 28 | 96.1 | 39.7% |
| 17 | AES West Oahu Solar HybridSolar and battery storage | 25 | 22.1 | 20.5% |
| 18 | Tesoro HawaiiOil | 20 | 159 | 90.6% |
| 19 | West Loch Solar OneSolar | 20 | 39.9 | 22.8% |
| 20 | Lanikuhana Solar LLCSolar | 15 | 31.6 | 24.5% |
| 21 | Waipio PeninsulaSolar | 11 | 16.1 | 16.7% |
| 22 | HNL Emergency Power FacilityBiomass | 10 | 2.6 | 2.9% |
| 23 | Kalaeloa Solar TwoSolar | 5.0 | 7.9 | 18.1% |
| 24 | Kalaeloa Renewable Energy ParkSolar | 5.0 | – | – |
| 25 | Waihonu North SolarSolar | 5.0 | 7.5 | 17.2% |
| 26 | Aloha Solar Energy Fund 1 PK1Solar | 5.0 | 7.2 | 16.4% |
| 27 | BYU - HawaiiSolar and battery storage | 5.0 | 5.4 | – |
| 28 | Mauka FIT OneSolar | 3.5 | 4.5 | 14.8% |
| 29 | Waihonu South SolarSolar | 1.5 | 2.5 | 19.2% |
| 30 | Pearl City Peninsula Solar ParkSolar | 1.0 | 3.8 | 43.3% |
| 31 | Kapolei Solar Energy ParkSolar | 1.0 | 1.3 | 14.6% |
* 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
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