22nd largest plant in Arizona · 592nd nationally
Gila River Power Block 3 is a natural gas power plant in Arizona with a nameplate capacity of 619 MW.
Ghost bars are each month's theoretical maximum (619 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 | Gila River Power Block 3 |
|---|---|
| Operator | Salt River Project |
| City | Gila Bend |
| County | Maricopa County |
| State | Arizona |
| ZIP | 85337 |
| Coordinates | 32.97500, -112.69440 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| ST11 | Natural Gas Fired Combined Cycle | Natural Gas | 271 MW | Operating | 2003 |
| CTG5 | Natural Gas Fired Combined Cycle | Natural Gas | 174 MW | Operating | 2003 |
| CTG6 | Natural Gas Fired Combined Cycle | Natural Gas | 174 MW | Operating | 2003 |
| Owner | Location | Share |
|---|---|---|
| Tucson Electric Power Co | Tucson, AZ | 7500.0% |
| Uns Electric, Inc | Tucson, AZ | 2500.0% |
Ownership reported to EIA Form 860. Percentages reflect reported generator-level ownership share, averaged when a plant has multiple generators.
| NERC Region | WECC |
|---|---|
| Balancing Authority | Tucson Electric Power Company |
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.