203rd largest plant in California · 2103rd nationally
Gilroy Power Plant is a natural gas power plant in California with a nameplate capacity of 130 MW. It generates roughly 59.5k MWh per year — enough to power about 5,663 average U.S. homes.
Its capacity factor of 5% reflects intermittent or peaking operation. At 795 lb CO₂/MWh, its emission rate sits below the national grid average of roughly 800 lb/MWh.
Ghost bars are each month's theoretical maximum (130 MW nameplate × hours in the month). Filled bars are actual net generation reported to EIA Form 923. The gap between them is capacity factor made visible.
| Plant Name | Gilroy Power Plant |
|---|---|
| Operator | Calpine Gilroy Cogen Lp |
| City | Gilroy |
| County | Santa Clara County |
| State | California |
| ZIP | 95020 |
| Coordinates | 37.00010, -121.53670 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| GEN1 | Natural Gas Fired Combined Cycle | Natural Gas | 90.0 MW | Operating | 1987 |
| GEN2 | Natural Gas Fired Combined Cycle | Natural Gas | 40.0 MW | Operating | 1987 |
| CO₂ | 23.6k metric tons |
|---|---|
| NOₓ | 6 metric tons |
| CO₂ Rate | 795 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.