Topaz Solar Farm
Solar power plant · San Luis Obispo County, California
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Topaz Solar Farms LLC
- County
- San Luis Obispo County
- Generating units
- 5
- Share of state capacity
- 0.54%
- Rank among solar plants in California
- #2 of 937
- EIA plant code
- 57695
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| TPZ2 | Solar Photovoltaic | 151 MW | 151 MW | 2013 | Operating |
| TPZ1 | Solar Photovoltaic | 130 MW | 130 MW | 2013 | Operating |
| TPZ5 | Solar Photovoltaic | 113 MW | 113 MW | 2014 | Operating |
| TPZ3 | Solar Photovoltaic | 102 MW | 102 MW | 2014 | Operating |
| TPZ4 | Solar Photovoltaic | 90 MW | 90 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
| Gateway Generating Station | Natural gas | 620 MW |
| Blythe Energy Inc | Natural gas | 591 MW |
| Palomar Energy | Natural gas | 559 MW |
| Cosumnes Power Plant | Natural gas | 557 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 586 MW solar plant and a 586 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