West Loch Solar One
Solar power plant · Honolulu County, Hawaii
Nameplate capacity
20 MW
Rank in Hawaii
#39
of 76 plants
In service since
2019
November 2019
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Hawaiian Electric Co Inc
- County
- Honolulu County
- Generating units
- 1
- Share of state capacity
- 0.54%
- Rank among solar plants in Hawaii
- #9 of 29
- EIA plant code
- 61987
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| WLS1 | Solar Photovoltaic | 20 MW | 20 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
| Pakini Nui Wind Farm | Wind | 21 MW |
| Tesoro Hawaii | Other | 20 MW |
| Palaau Power Hybrid | Other | 17 MW |
| Lanikuhana Solar LLC | Solar | 15 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 20 MW solar plant and a 20 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