Where is Wilmot Energy Center II?

In Pima 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 Wilmot Energy Center II?

200 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.

Who owns Wilmot Energy Center II?

EIA-860M names Wilmot Energy Center II, LLC 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 Wilmot Energy Center II LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Wilmot Energy Center II, LLC 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 "Wilmot Energy Center II LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Wilmot Energy Center II still running?

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

Wilmot Energy Center II

Wilmot Energy Center II is a 200 MW battery storage project in Pima County, Arizona, operated by Wilmot Energy Center II, LLC. EIA-860M lists 2 generating units here. Its units entered service in 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: 200 MW; 200 MW net summer
Generating units: 2
In service: 2026
EIA plant ID: 69254

Where it is

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County: Pima County, Arizona
Coordinates: 31.5925, -110.5014
Balancing authority: TEPC
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Wilmot Energy Center II, LLC
Primary energy source: Battery
Technologies: Batteries, Solar Photovoltaic
Status: Operating

This site runs on more than one energy source. EIA-860M capacity splits: Battery 100 MW, Solar 100 MW. It is filed here under Battery, the source with the most capacity.

Every plant Wilmot Energy Center II, LLC reports to EIA →

Wilmot Energy Center II: FAQ

Where is Wilmot Energy Center II?: In Pima 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 Wilmot Energy Center II?: 200 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
Who owns Wilmot Energy Center II?: EIA-860M names Wilmot Energy Center II, LLC 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 Wilmot Energy Center II LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Wilmot Energy Center II, LLC 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 "Wilmot Energy Center II LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Wilmot Energy Center II still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.