Edward C Hyatt
Hydro power plant · Butte County, California
Nameplate capacity
644 MW
Rank in California
#29
of 1,897 plants
In service since
1968
March 1968
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- California Dept. of Water Resources
- County
- Butte County
- Generating units
- 6
- Share of state capacity
- 0.60%
- Rank among hydro plants in California
- #4 of 244
- EIA plant code
- 437
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | 117 MW | 135 MW | 1968 | Operating |
| 3 | Conventional Hydroelectric | 117 MW | 135 MW | 1968 | Operating |
| 5 | Conventional Hydroelectric | 117 MW | 135 MW | 1968 | Operating |
| 2 | Hydroelectric Pumped Storage | 98 MW | 112 MW | 1968 | Operating |
| 4 | Hydroelectric Pumped Storage | 98 MW | 112 MW | 1968 | Operating |
| 6 | Hydroelectric Pumped Storage | 98 MW | 112 MW | 1969 | 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
| Carlsbad Energy Center | Natural gas | 659 MW |
| Russell City Energy Center | Natural gas | 655 MW |
| Sutter Energy Center | Natural gas | 636 MW |
| Metcalf Energy Center | Natural gas | 635 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 644 MW solar plant and a 644 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