Spaulding 1
Hydro power plant · Nevada County, California
Nameplate capacity
7.0 MW
Rank in California
#918
of 1,897 plants
In service since
1928
May 1928
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- Pacific Gas & Electric Co.
- County
- Nevada County
- Generating units
- 1
- Share of state capacity
- 0.01%
- Rank among hydro plants in California
- #141 of 244
- EIA plant code
- 281
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 7.0 MW | 7.0 MW | 1928 | 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
| SCDA Solar 1 | Solar | 7.0 MW |
| Saint Agnes Medical Center | Natural gas | 7.0 MW |
| Adelanto Solar Project | Solar | 6.8 MW |
| Coalinga 6C Cogen | Natural gas | 6.8 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 7.0 MW solar plant and a 7.0 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