Agua Fria
Natural gas power plant · Maricopa County, Arizona
Nameplate capacity
738 MW
Rank in Arizona
#14
of 200 plants
In service since
1957
April 1957
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Steam Turbine
- Operator
- Salt River Project
- County
- Maricopa County
- Generating units
- 10
- Share of state capacity
- 1.73%
- Rank among natural gas plants in Arizona
- #8 of 33
- EIA plant code
- 141
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| AF3 | Natural Gas Steam Turbine | 163 MW | 181 MW | 1961 | Operating |
| AF1 | Natural Gas Steam Turbine | 114 MW | 113 MW | 1958 | Operating |
| AF2 | Natural Gas Steam Turbine | 114 MW | 113 MW | 1957 | Operating |
| AF4 | Natural Gas Fired Combustion Turbine | 81 MW | 73 MW | 1975 | Operating |
| AF5 | Natural Gas Fired Combustion Turbine | 71 MW | 73 MW | 1974 | Operating |
| AF6 | Natural Gas Fired Combustion Turbine | 71 MW | 73 MW | 1974 | Operating |
| AF7 | Natural Gas Fired Combustion Turbine | 50 MW | 45 MW | 2022 | Operating |
| AF8 | Natural Gas Fired Combustion Turbine | 50 MW | 45 MW | 2022 | Operating |
| AFSB1 | Batteries | 25 MW | 25 MW | 2021 | Operating |
| PV-3 | Solar Photovoltaic | 0.2 MW | 0.2 MW | 2001 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Arizona
| Sonoran Solar Energy | Solar | 750 MW |
| Desert Basin | Natural gas | 745 MW |
| Coolidge Generation Station | Natural gas | 726 MW |
| Arlington Valley Energy Facility | Natural gas | 713 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 738 MW solar plant and a 738 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Arizona power plants · What Arizona actually generates