In Imperial County, California (CA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.

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

EIA-860M names Imperial Irrigation District 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 Rockwood LLC?

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

Is Rockwood still running?

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

Rockwood

Rockwood is a 50 MW natural gas power plant in Imperial County, California, operated by Imperial Irrigation District. EIA-860M lists 2 generating units here. Its units entered service between 1979 and 1980.

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: 49.8 MW; 42.3 MW net summer
Generating units: 2
In service: 1979–1980
EIA plant ID: 7824

Where it is

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County: Imperial County, California
Coordinates: 32.9553, -115.5364
Balancing authority: IID
Sector: Electric Utility

Units, technology and status

Operator of record: Imperial Irrigation District
Primary energy source: Natural gas
Technologies: Natural Gas Fired Combustion Turbine, Petroleum Liquids
Status: Operating

This site runs on more than one energy source. EIA-860M capacity splits: Natural gas 25 MW, Petroleum 25 MW. It is filed here under Natural gas, the source with the most capacity.

Every plant Imperial Irrigation District reports to EIA →

Rockwood: FAQ

Where is Rockwood?: In Imperial County, California (CA). 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 Rockwood?: 50 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
Who owns Rockwood?: EIA-860M names Imperial Irrigation District 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 Rockwood LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Imperial Irrigation District 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 "Rockwood LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Rockwood still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.