AES Kekaha Solar, LLC Hybrid
Battery storage power plant · Kauai County, Hawaii
Nameplate capacity
28 MW
Rank in Hawaii
#32
of 76 plants
In service since
2019
December 2019
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- AES Distributed Energy
- County
- Kauai County
- Generating units
- 2
- Share of state capacity
- 0.76%
- Rank among battery storage plants in Hawaii
- #5 of 6
- EIA plant code
- 63280
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| BESS | Batteries | 14 MW | 14 MW | 2021 | Operating |
| KEKAH | Solar Photovoltaic | 14 MW | 14 MW | 2019 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Hawaii
| Kahuku Wind Power LLC | Wind | 30 MW |
| EE Waianae Solar Project | Solar | 28 MW |
| KIUC Kapaia PV and BA Storage Project Hy | Solar | 28 MW |
| Na Pua Makani Wind Project | Wind | 28 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 28 MW solar plant and a 28 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Hawaii power plants · What Hawaii actually generates