Coolidge Generation Station
Coolidge Generation Station is a 1 GW natural gas power plant in Pinal County, Arizona, operated by Salt River Project. EIA-860M lists 18 generating units here. Its units entered service between 2011 and 2026.
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
- 1,023 MW
- 772.8 MW net summer
- Generating units
- 18
- In service
- 2011–2026
- EIA plant ID
- 56948
Where it is
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- County
- Pinal County, Arizona
- Coordinates
- 32.9174, -111.5033
- Balancing authority
- SRP
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Salt River Project
- Primary energy source
- Natural gas
- Technologies
- Natural Gas Fired Combustion Turbine
- Status
- Operating
Coolidge Generation Station: FAQ
- Where is Coolidge Generation Station?
- In Pinal 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 Coolidge Generation Station?
- 1 GW of nameplate capacity across 18 units, as of the EIA-860M release for 2026-07.
- Who owns Coolidge Generation Station?
- EIA-860M names Salt River Project 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 Coolidge Generation Station LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Salt River Project 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 "Coolidge Generation Station LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Coolidge Generation Station still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.