Puna Geothermal Venture I
Other power plant · Hawaii County, Hawaii
Nameplate capacity
51 MW
Rank in Hawaii
#18
of 76 plants
In service since
1992
August 1992
Details
- Primary fuel
- Other
- Technology
- Geothermal
- Operator
- Puna Geothermal Venture
- County
- Hawaii County
- Generating units
- 12
- Share of state capacity
- 1.38%
- Rank among other plants in Hawaii
- #10 of 25
- EIA plant code
- 52028
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| OEC31 | Geothermal | 8.0 MW | 6.0 MW | 2012 | Operating |
| OEC32 | Geothermal | 8.0 MW | 6.0 MW | 2012 | Operating |
| OEC11 | Geothermal | 3.5 MW | 3.1 MW | 1992 | Operating |
| OEC12 | Geothermal | 3.5 MW | 3.1 MW | 1992 | Out of service and NOT expected to return to service in next calendar year |
| OEC13 | Geothermal | 3.5 MW | 3.1 MW | 1992 | Operating |
| OEC14 | Geothermal | 3.5 MW | 3.1 MW | 1992 | Operating |
| OEC15 | Geothermal | 3.5 MW | 3.1 MW | 1992 | Operating |
| OEC21 | Geothermal | 3.5 MW | 3.1 MW | 1992 | Operating |
| OEC22 | Geothermal | 3.5 MW | 3.1 MW | 1992 | Operating |
| OEC23 | Geothermal | 3.5 MW | 3.1 MW | 1992 | Operating |
| OEC24 | Geothermal | 3.5 MW | 3.1 MW | 1992 | Operating |
| OEC25 | Geothermal | 3.5 MW | 3.1 MW | 1992 | 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
| Hamakua Energy Plant | Other | 66 MW |
| AES Waikoloa Solar Hybrid | Battery storage | 60 MW |
| Schofield Generating Station | Other | 50 MW |
| Kawailoa Solar | Solar | 49 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 51 MW solar plant and a 51 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