City of Hayward WWTP
Solar power plant · Alameda County, California
Nameplate capacity
2.7 MW
Rank in California
#1281
of 1,897 plants
In service since
2010
November 2010
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- City of Hayward
- County
- Alameda County
- Generating units
- 2
- Share of state capacity
- 0.00%
- Rank among solar plants in California
- #507 of 937
- EIA plant code
- 58525
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Solar Photovoltaic | 1.6 MW | 1.6 MW | 2010 | Operating |
| COGEN | Other Waste Biomass | 1.1 MW | 1.1 MW | 2014 | 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
| Woodward Power Plant | Hydro | 2.8 MW |
| Chambers 4 - Sacramento SMF1 | Solar | 2.7 MW |
| Dept of General Services -FTB | Solar | 2.7 MW |
| Niagara Bottling Ontario PHI | Solar | 2.7 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 2.7 MW solar plant and a 2.7 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