Nameplate capacity
10 MW
Rank in California
#841
of 1,897 plants
In service since
1988
December 1988
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- EIF Haypress LLC
- County
- Sierra County
- Generating units
- 2
- Share of state capacity
- 0.01%
- Rank among hydro plants in California
- #122 of 244
- EIA plant code
- 10253
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| LGEN | Conventional Hydroelectric | 5.0 MW | 5.0 MW | 1989 | Operating |
| UGEN | Conventional Hydroelectric | 5.0 MW | 5.0 MW | 1988 | 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
| Hat Creek 1 | Hydro | 10 MW |
| Hat Creek 2 | Hydro | 10 MW |
| Hecate Energy Desert Storage 1 LLC | Battery storage | 10 MW |
| Henrietta D Energy Storage LLC | Battery storage | 10 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 California power plants · What California actually generates