Where is Geismar Cogen?

In Ascension County, Louisiana (LA). 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 Geismar Cogen?

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

Who owns Geismar Cogen?

EIA-860M names Air Liquide Large Industries U S LP 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 Geismar Cogen LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Air Liquide Large Industries U S LP 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 "Geismar Cogen LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Geismar Cogen still running?

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

Geismar Cogen

Geismar Cogen is a 84 MW natural gas power plant in Ascension County, Louisiana, operated by Air Liquide Large Industries U S LP. EIA-860M lists 1 generating unit here, inside MISO. Its unit entered service in 2000.

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: 83.9 MW; 72.5 MW net summer
Generating units: 1
In service: 2000
EIA plant ID: 56787

Where it is

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County: Ascension County, Louisiana
Coordinates: 30.209, -90.9921
Balancing authority: MISO
Sector: Industrial CHP

Units, technology and status

Operator of record: Air Liquide Large Industries U S LP
Primary energy source: Natural gas
Technologies: Natural Gas Fired Combustion Turbine
Status: Operating

Every plant Air Liquide Large Industries U S LP reports to EIA →

Geismar Cogen: FAQ

Where is Geismar Cogen?: In Ascension County, Louisiana (LA). 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 Geismar Cogen?: 84 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
Who owns Geismar Cogen?: EIA-860M names Air Liquide Large Industries U S LP 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 Geismar Cogen LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Air Liquide Large Industries U S LP 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 "Geismar Cogen LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Geismar Cogen still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.