25th largest plant in Arizona · 608th nationally
Sundance is a natural gas power plant in Arizona with a nameplate capacity of 605 MW. It generates roughly 522.7k MWh per year — enough to power about 49,778 average U.S. homes.
Its capacity factor of 10% reflects intermittent or peaking operation. At 1213 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.
| Plant Name | Sundance |
|---|---|
| Operator | Arizona Public Service Co |
| City | Casa Grande |
| County | Pinal County |
| State | Arizona |
| ZIP | 85228 |
| Coordinates | 32.92850, -111.58990 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| CT1 | Natural Gas Fired Combustion Turbine | Natural Gas | 60.5 MW | Operating | 2002 |
| CT10 | Natural Gas Fired Combustion Turbine | Natural Gas | 60.5 MW | Operating | 2002 |
| CT2 | Natural Gas Fired Combustion Turbine | Natural Gas | 60.5 MW | Operating | 2002 |
| CT3 | Natural Gas Fired Combustion Turbine | Natural Gas | 60.5 MW | Operating | 2002 |
| CT4 | Natural Gas Fired Combustion Turbine | Natural Gas | 60.5 MW | Operating | 2002 |
| CT5 | Natural Gas Fired Combustion Turbine | Natural Gas | 60.5 MW | Operating | 2002 |
| CT6 | Natural Gas Fired Combustion Turbine | Natural Gas | 60.5 MW | Operating | 2002 |
| CT7 | Natural Gas Fired Combustion Turbine | Natural Gas | 60.5 MW | Operating | 2002 |
| CT8 | Natural Gas Fired Combustion Turbine | Natural Gas | 60.5 MW | Operating | 2002 |
| CT9 | Natural Gas Fired Combustion Turbine | Natural Gas | 60.5 MW | Operating | 2002 |
| CT11 | Natural Gas Fired Combustion Turbine | Natural Gas | 45.0 MW | Under Construction | — |
| CT12 | Natural Gas Fired Combustion Turbine | Natural Gas | 45.0 MW | Under Construction | — |
| CO₂ | 317.1k metric tons |
|---|---|
| SO₂ | 2 metric tons |
| NOₓ | 35 metric tons |
| CO₂ Rate | 1213 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 | Western Area Power Administration - Desert Southwest Region |
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.