Monticello Dam
Hydro power plant · Solano County, California
Nameplate capacity
12 MW
Rank in California
#811
of 1,897 plants
In service since
1983
June 1983
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- Solano Irrigation District
- County
- Solano County
- Generating units
- 3
- Share of state capacity
- 0.01%
- Rank among hydro plants in California
- #112 of 244
- EIA plant code
- 7646
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 5.0 MW | 5.0 MW | 1983 | Operating |
| 2 | Conventional Hydroelectric | 5.0 MW | 5.0 MW | 1983 | Operating |
| 3 | Conventional Hydroelectric | 1.5 MW | 1.5 MW | 1983 | 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
| CE Turbo LLC | Other | 12 MW |
| Kern Canyon | Hydro | 12 MW |
| Ameresco Ox Mountain | Other | 11 MW |
| Berry NMW Cogens | Natural gas | 11 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 12 MW solar plant and a 12 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