West Phoenix
West Phoenix is a 1 GW natural gas power plant in Maricopa County, Arizona, operated by Arizona Public Service Co. EIA-860M lists 10 generating units here. Its units entered service between 1972 and 2003.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 1,207.4 MW
- 929 MW net summer
- Generating units
- 10
- In service
- 1972–2003
- EIA plant ID
- 117
Where it is
Loading map…
- County
- Maricopa County, Arizona
- Coordinates
- 33.4417, -112.1583
- Balancing authority
- AZPS
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Arizona Public Service Co
- Primary energy source
- Natural gas
- Technologies
- Natural Gas Fired Combined Cycle, Natural Gas Fired Combustion Turbine
- Status
- Operating
West Phoenix: FAQ
- Where is West Phoenix?
- In Maricopa County, Arizona (AZ). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is West Phoenix?
- 1 GW of nameplate capacity across 10 units, as of the EIA-860M release for 2026-07.
- Who owns West Phoenix?
- EIA-860M names Arizona Public Service Co as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as West Phoenix LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Arizona Public Service Co here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "West Phoenix LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is West Phoenix still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.