HNL Emergency Power Facility
Other power plant · Honolulu County, Hawaii
Nameplate capacity
10 MW
Rank in Hawaii
#50
of 76 plants
In service since
2017
June 2017
Details
- Primary fuel
- Other
- Technology
- Other Waste Biomass
- Operator
- Hawaiian Electric Co Inc
- County
- Honolulu County
- Generating units
- 4
- Share of state capacity
- 0.27%
- Rank among other plants in Hawaii
- #22 of 25
- EIA plant code
- 58469
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| AP1 | Other Waste Biomass | 2.5 MW | 2.5 MW | 2017 | Operating |
| AP2 | Other Waste Biomass | 2.5 MW | 2.5 MW | 2017 | Operating |
| AP3 | Other Waste Biomass | 2.5 MW | 2.5 MW | 2017 | Operating |
| AP4 | Other Waste Biomass | 2.5 MW | 2.5 MW | 2017 | 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
| Wailuku River Hydroelectric | Hydro | 10 MW |
| Biomass to Energy Facility, Kauai | Other | 10 MW |
| Gay Robinson | Hydro | 8.7 MW |
| Waimea | Other | 7.5 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 10 MW solar plant and a 10 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