Battery storage projects in Hawaii
15 operating battery storage projects in Hawaii with 515 MW of battery capacity, largest first. From EIA-860M, August 2026.
Largest battery storage projects in Hawaii
| # | Plant | Battery MW | GWh, 2025 |
|---|---|---|---|
| 1 | Kapolei Energy StorageHonolulu County | 185 | −18.7 |
| 2 | AES Maui Kuihelani Solar HybridMaui County · Solar and battery storage | 60 | 107 |
| 3 | Ho'Ohana Solar 1Honolulu County · Solar and battery storage | 52 | 40.4* |
| 4 | Mililani South Solar FarmHonolulu County · Solar and battery storage | 39 | 62.6 |
| 5 | Waiawa Solar Power HybridHonolulu County · Solar and battery storage | 36 | 58.0 |
| 6 | Hale Kuawehi Solar HybridHawaii County · Solar and battery storage | 30 | 65.0* |
| 7 | AES Waikoloa Solar HybridHawaii County · Solar and battery storage | 30 | 61.0 |
| 8 | AES Lawai Solar HybridKauai County · Solar and battery storage | 20 | 40.2 |
| 9 | AES Kekaha Solar, LLC HybridKauai County · Solar and battery storage | 14 | 26.6 |
| 10 | KIUC Kapaia PV and BA Storage Project HyKauai County · Solar and battery storage | 13 | 21.1 |
| 11 | AES West Oahu Solar HybridHonolulu County · Solar and battery storage | 13 | 22.1 |
| 12 | Auwahi Wind Energy HybridMaui County · Wind and battery storage | 11 | 90.7 |
| 13 | Kaheawa Wind Power II LLCMaui County · Wind and battery storage | 10 | 47.9 |
| 14 | BYU - HawaiiHonolulu County · Solar and battery storage | 1.9 | 5.4 |
| 15 | Mauna Loa Macadamia NutHawaii County · Solar and battery storage | 0.5 | 1.4 |
* Fewer than 12 months of 2025 reported, so the total is partial.
Every project with battery storage, solar and wind hybrids included. MW is battery nameplate only; net generation covers the whole project. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources