Glenarm
Natural gas power plant · Los Angeles County, California
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- City of Pasadena - (CA)
- County
- Los Angeles County
- Generating units
- 6
- Share of state capacity
- 0.25%
- Rank among natural gas plants in California
- #42 of 309
- EIA plant code
- 422
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GT5 | Natural Gas Fired Combined Cycle | 71 MW | 68 MW | 2016 | Operating |
| GT3 | Natural Gas Fired Combustion Turbine | 61 MW | 47 MW | 2004 | Operating |
| GT4 | Natural Gas Fired Combustion Turbine | 61 MW | 47 MW | 2004 | Operating |
| GT1 | Natural Gas Fired Combustion Turbine | 29 MW | 22 MW | 1976 | Operating |
| GT2 | Natural Gas Fired Combustion Turbine | 29 MW | 22 MW | 1976 | Operating |
| ST1 | Natural Gas Fired Combined Cycle | 16 MW | 16 MW | 2016 | 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
| RE Garland | Solar | 273 MW |
| White Rock/Slab Creek | Hydro | 269 MW |
| Ocotillo Express LLC | Wind | 265 MW |
| Chaparral Springs | Solar | 262 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 266 MW solar plant and a 266 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