Ormesa III
Other power plant · Imperial County, California
Nameplate capacity
46 MW
Rank in California
#483
of 1,897 plants
In service since
1989
May 1989
Details
- Primary fuel
- Other
- Technology
- Geothermal
- Operator
- Ormat Nevada Inc
- County
- Imperial County
- Generating units
- 3
- Share of state capacity
- 0.04%
- Rank among other plants in California
- #24 of 152
- EIA plant code
- 10763
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GEN1 | Geothermal | 22 MW | 14 MW | 1989 | Out of service and NOT expected to return to service in next calendar year |
| OE301 | Geothermal | 16 MW | 11 MW | 2020 | Operating |
| GBU | Geothermal | 8.0 MW | 5.3 MW | 2007 | 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 California
| McKittrick Limited | Natural gas | 46 MW |
| San Francisquito 2 | Hydro | 46 MW |
| CE Leathers | Other | 46 MW |
| Del Ranch Company | Other | 46 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 46 MW solar plant and a 46 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 California power plants · What California actually generates