86th largest plant in California · 1166th nationally
Glenarm is a natural gas power plant in California with a nameplate capacity of 266 MW. It generates roughly 40.9k MWh per year — enough to power about 3,896 average U.S. homes.
Its capacity factor of 2% reflects intermittent or peaking operation. At 1235 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.
| Plant Name | Glenarm |
|---|---|
| Operator | City Of Pasadena - (Ca) |
| City | Pasadena |
| County | Los Angeles County |
| State | California |
| ZIP | 91105 |
| Coordinates | 34.12600, -118.14940 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| GT5 | Natural Gas Fired Combined Cycle | Natural Gas | 71.0 MW | Operating | 2016 |
| GT3 | Natural Gas Fired Combustion Turbine | Natural Gas | 60.5 MW | Operating | 2004 |
| GT4 | Natural Gas Fired Combustion Turbine | Natural Gas | 60.5 MW | Operating | 2004 |
| GT1 | Natural Gas Fired Combustion Turbine | Natural Gas | 28.8 MW | Operating | 1976 |
| GT2 | Natural Gas Fired Combustion Turbine | Natural Gas | 28.8 MW | Operating | 1976 |
| ST1 | Natural Gas Fired Combined Cycle | Natural Gas | 16.0 MW | Operating | 2016 |
| CO₂ | 25.3k metric tons |
|---|---|
| NOₓ | 4 metric tons |
| CO₂ Rate | 1235 lb/MWh |
Annual totals and CO₂ rate reported by EPA eGRID for 2023. Reference averages are approximate U.S.-wide figures from the same dataset.
| NERC Region | WECC |
|---|---|
| Balancing Authority | California Independent System Operator |
Natural gas plants are the workhorse of the modern grid. Combined-cycle units achieve very high efficiency and can ramp up and down quickly to balance variable renewables. They emit roughly half the CO₂ per MWh of coal and far less of other pollutants, but they still release upstream methane during fuel extraction.