Nameplate capacity
822 MW
Rank in Arizona
#9
of 200 plants
In service since
1979
December 1979
Details
- Primary fuel
- Coal
- Technology
- Conventional Steam Coal
- Operator
- Salt River Project
- County
- Apache County
- Generating units
- 2
- Share of state capacity
- 1.92%
- Rank among coal plants in Arizona
- #2 of 2
- EIA plant code
- 6177
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| CO1 | Conventional Steam Coal | 411 MW | 380 MW | 1979 | Operating |
| CO2 | Conventional Steam Coal | 411 MW | 382 MW | 1980 | 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
| Red Hawk | Natural gas | 1,127 MW |
| Hoover Dam (AZ) | Hydro | 1,039 MW |
| Ocotillo | Natural gas | 806 MW |
| Apache Station | Natural gas | 782 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 822 MW solar plant and a 822 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