Foster Clean Power B
Solar power plant · Humboldt County, California
Nameplate capacity
5.2 MW
Rank in California
#981
of 1,897 plants
In service since
2025
September 2025
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Foster Clean Power B LLC
- County
- Humboldt County
- Generating units
- 2
- Share of state capacity
- 0.00%
- Rank among solar plants in California
- #321 of 937
- EIA plant code
- 67859
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| FOSTB | Solar Photovoltaic | 4.0 MW | 4.0 MW | 2025 | Operating |
| BESSB | Batteries | 1.2 MW | 1.2 MW | 2025 | 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
| Broadridge Cogen | Natural gas | 5.2 MW |
| EQX011 Duane Fuel Cell | Natural gas | 5.2 MW |
| Intel Folsom Phase 3 | Solar | 5.2 MW |
| Lerdo Detention Facility - Solar 2, 3 | Solar | 5.2 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 5.2 MW solar plant and a 5.2 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