Nameplate capacity
1,127 MW
Rank in Arizona
#7
of 200 plants
In service since
2002
July 2002
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Arizona Public Service Co
- County
- Maricopa County
- Generating units
- 6
- Share of state capacity
- 2.64%
- Rank among natural gas plants in Arizona
- #4 of 33
- EIA plant code
- 55455
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| ST1 | Natural Gas Fired Combined Cycle | 204 MW | 157 MW | 2002 | Operating |
| ST2 | Natural Gas Fired Combined Cycle | 204 MW | 157 MW | 2002 | Operating |
| CT1A | Natural Gas Fired Combined Cycle | 188 MW | 178 MW | 2002 | Operating |
| CT2A | Natural Gas Fired Combined Cycle | 182 MW | 178 MW | 2002 | Operating |
| CT2B | Natural Gas Fired Combined Cycle | 182 MW | 178 MW | 2002 | Operating |
| CT1B | Natural Gas Fired Combined Cycle | 168 MW | 178 MW | 2002 | 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
| Harquahala Generating Project | Natural gas | 1,277 MW |
| West Phoenix | Natural gas | 1,207 MW |
| Hoover Dam (AZ) | Hydro | 1,039 MW |
| Coronado | Coal | 822 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 1,127 MW solar plant and a 1,127 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