18th largest plant in Arizona · 513th nationally
Mesquite Generating Station Block 1 is a natural gas power plant in Arizona with a nameplate capacity of 692 MW.
Ghost bars are each month's theoretical maximum (692 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 | Mesquite Generating Station Block 1 |
|---|---|
| Operator | Salt River Project |
| City | Arlington |
| County | Maricopa County |
| State | Arizona |
| ZIP | 85322 |
| Coordinates | 33.34500, -112.86417 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| ST1 | Natural Gas Fired Combined Cycle | Natural Gas | 321 MW | Operating | 2003 |
| GT1 | Natural Gas Fired Combined Cycle | Natural Gas | 185 MW | Operating | 2003 |
| GT2 | Natural Gas Fired Combined Cycle | Natural Gas | 185 MW | Operating | 2003 |
| NERC Region | WECC |
|---|---|
| Balancing Authority | Salt River Project |
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.