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.

40 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.

EIA-860M names Central Arizona Water Conservation Dist 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 Waddell LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Central Arizona Water Conservation Dist 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 "Waddell LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Waddell still running?

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

Waddell

Waddell is a 40 MW pumped storage hydro plant in Maricopa County, Arizona, operated by Central Arizona Water Conservation Dist. EIA-860M lists 4 generating units here. Its units entered service in 1993.

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: 40 MW; 40 MW net summer
Generating units: 4
In service: 1993
EIA plant ID: 7164

Where it is

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County: Maricopa County, Arizona
Coordinates: 33.8447, -112.2714
Balancing authority: WALC
Sector: Electric Utility

Units, technology and status

Operator of record: Central Arizona Water Conservation Dist
Primary energy source: Pumped storage
Technologies: Hydroelectric Pumped Storage
Status: Operating

Every plant Central Arizona Water Conservation Dist reports to EIA →

Waddell: FAQ

Where is Waddell?: 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 Waddell?: 40 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.
Who owns Waddell?: EIA-860M names Central Arizona Water Conservation Dist 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 Waddell LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Central Arizona Water Conservation Dist 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 "Waddell LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Waddell still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.