27th largest plant in Arizona · 652nd nationally
Kyrene is a natural gas power plant in Arizona with a nameplate capacity of 574 MW. It generates roughly 1.3M MWh per year — enough to power about 119,858 average U.S. homes.
Its capacity factor of 25% reflects intermittent or peaking operation. At 842 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.
Ghost bars are each month's theoretical maximum (574 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 | Kyrene |
|---|---|
| Operator | Salt River Project |
| City | Tempe |
| County | Maricopa County |
| State | Arizona |
| ZIP | 85283 |
| Coordinates | 33.35560, -111.93530 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| KY7 | Natural Gas Fired Combined Cycle | Natural Gas | 170 MW | Operating | 2002 |
| KY7A | Natural Gas Fired Combined Cycle | Natural Gas | 122 MW | Operating | 2002 |
| KY2 | Natural Gas Steam Turbine | Natural Gas | 73.5 MW | Out of Service | 1954 |
| KY5 | Natural Gas Fired Combustion Turbine | Natural Gas | 60.3 MW | Operating | 1973 |
| KY6 | Natural Gas Fired Combustion Turbine | Natural Gas | 60.3 MW | Operating | 1973 |
| KY4 | Natural Gas Fired Combustion Turbine | Natural Gas | 53.1 MW | Operating | 1971 |
| KY1 | Natural Gas Steam Turbine | Natural Gas | 34.5 MW | Out of Service | 1952 |
| CO₂ | 530.1k metric tons |
|---|---|
| SO₂ | 3 metric tons |
| NOₓ | 43 metric tons |
| CO₂ Rate | 842 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 | 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.