Martinez Refining
Natural gas power plant · Contra Costa County, California
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Martinez Refining Co
- County
- Contra Costa County
- Generating units
- 3
- Share of state capacity
- 0.09%
- Rank among natural gas plants in California
- #77 of 309
- EIA plant code
- 54912
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GTG1 | Natural Gas Fired Combined Cycle | 40 MW | 40 MW | 1995 | Operating |
| GTG2 | Natural Gas Fired Combined Cycle | 40 MW | 40 MW | 1996 | Operating |
| STG1 | Other Gases | 20 MW | 20 MW | 1995 | 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
| Drew Solar LLC | Solar | 100 MW |
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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 100 MW solar plant and a 100 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