In Yuma 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.

422 MW of nameplate capacity across 8 units, as of the EIA-860M release for 2026-07.

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 Yucca 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 "Yucca LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Yucca still running?

EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.

Yucca

Yucca is a 422 MW natural gas power plant in Yuma County, Arizona, operated by Arizona Public Service Co. EIA-860M lists 8 generating units here. Its units entered service between 1959 and 2008.

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: 422.4 MW; 317.4 MW net summer
Generating units: 8
In service: 1959–2008
EIA plant ID: 120

Where it is

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County: Yuma County, Arizona
Coordinates: 32.7214, -114.7106
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 Combustion Turbine, Natural Gas Steam Turbine, Petroleum Liquids
Status: Operating

This site runs on more than one energy source. EIA-860M capacity splits: Natural gas 325 MW, Petroleum 98 MW. It is filed here under Natural gas, the source with the most capacity.

Every plant Arizona Public Service Co reports to EIA →

Yucca: FAQ

Where is Yucca?: In Yuma 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 Yucca?: 422 MW of nameplate capacity across 8 units, as of the EIA-860M release for 2026-07.
Who owns Yucca?: 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 Yucca 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 "Yucca LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Yucca still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.