Spring Gap
Hydro power plant · Tuolumne County, California
Nameplate capacity
6.0 MW
Rank in California
#953
of 1,897 plants
In service since
2021
September 2021
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- Pacific Gas & Electric Co.
- County
- Tuolumne County
- Generating units
- 1
- Share of state capacity
- 0.01%
- Rank among hydro plants in California
- #148 of 244
- EIA plant code
- 284
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 6.0 MW | 7.0 MW | 2021 | 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
| SRI International Cogen Project | Natural gas | 6.0 MW |
| San Jose Cogeneration | Natural gas | 6.0 MW |
| Wagner Wind LLC | Wind | 6.0 MW |
| Amazon Bakersfield 1 Solar Project | Solar | 5.9 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 6.0 MW solar plant and a 6.0 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