West Phoenix
Natural gas power plant · Maricopa County, Arizona
Nameplate capacity
1,207 MW
Rank in Arizona
#6
of 200 plants
In service since
1972
May 1972
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Arizona Public Service Co
- County
- Maricopa County
- Generating units
- 10
- Share of state capacity
- 2.83%
- Rank among natural gas plants in Arizona
- #3 of 33
- EIA plant code
- 117
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| C5-3 | Natural Gas Fired Combined Cycle | 201 MW | 146 MW | 2003 | Operating |
| C5-1 | Natural Gas Fired Combined Cycle | 185 MW | 163 MW | 2003 | Operating |
| C5-2 | Natural Gas Fired Combined Cycle | 185 MW | 163 MW | 2003 | Operating |
| 1B | Natural Gas Fired Combined Cycle | 132 MW | 85 MW | 1976 | Operating |
| 2B | Natural Gas Fired Combined Cycle | 132 MW | 85 MW | 1976 | Operating |
| 3B | Natural Gas Fired Combined Cycle | 132 MW | 85 MW | 1976 | Operating |
| C4-1 | Natural Gas Fired Combined Cycle | 91 MW | 68 MW | 2001 | Operating |
| GT1 | Natural Gas Fired Combustion Turbine | 53 MW | 50 MW | 1972 | Operating |
| GT2 | Natural Gas Fired Combustion Turbine | 53 MW | 50 MW | 1973 | Operating |
| C4-2 | Natural Gas Fired Combined Cycle | 45 MW | 34 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
| Glen Canyon Dam | Hydro | 1,312 MW |
| Harquahala Generating Project | Natural gas | 1,277 MW |
| Red Hawk | Natural gas | 1,127 MW |
| Hoover Dam (AZ) | Hydro | 1,039 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 1,207 MW solar plant and a 1,207 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