In Los Angeles 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.

57 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.

EIA-860M names THUMS Long Beach Company 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 THUMS LLC?

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

Is THUMS still running?

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

THUMS

THUMS is a 57 MW natural gas power plant in Los Angeles County, California, operated by THUMS Long Beach Company. EIA-860M lists 1 generating unit here, inside CAISO. Its unit entered service in 2003.

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: 57.4 MW; 45 MW net summer
Generating units: 1
In service: 2003
EIA plant ID: 56051

Where it is

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County: Los Angeles County, California
Coordinates: 33.7684, -118.2141
Balancing authority: CISO
Sector: Industrial Non-CHP

Units, technology and status

Operator of record: THUMS Long Beach Company
Primary energy source: Natural gas
Technologies: Natural Gas Fired Combustion Turbine
Status: Operating

Every plant THUMS Long Beach Company reports to EIA →

THUMS: FAQ

Where is THUMS?: In Los Angeles 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 THUMS?: 57 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
Who owns THUMS?: EIA-860M names THUMS Long Beach Company 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 THUMS LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — THUMS Long Beach Company 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 "THUMS LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is THUMS still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.