Where is Plaquemine Cogeneration Plant?

In Iberville 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 Plaquemine Cogeneration Plant?

1 GW of nameplate capacity across 7 units, as of the EIA-860M release for 2026-07.

Who owns Plaquemine Cogeneration Plant?

EIA-860M names Dow Chemical Co 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 Plaquemine Cogeneration Plant LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Dow Chemical Co 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 "Plaquemine Cogeneration Plant LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Plaquemine Cogeneration Plant still running?

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

Plaquemine Cogeneration Plant

Plaquemine Cogeneration Plant is a 1 GW natural gas power plant in Iberville County, Louisiana, operated by Dow Chemical Co. EIA-860M lists 7 generating units here, inside MISO. Its units entered service between 2004 and 2024.

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: 1,084.8 MW; 890.8 MW net summer
Generating units: 7
In service: 2004–2024
EIA plant ID: 55419

Where it is

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County: Iberville County, Louisiana
Coordinates: 30.3217, -91.2347
Balancing authority: MISO
Sector: Industrial CHP

Units, technology and status

Operator of record: Dow Chemical Co
Primary energy source: Natural gas
Technologies: Natural Gas Fired Combined Cycle
Status: Operating

Every plant Dow Chemical Co reports to EIA →

Plaquemine Cogeneration Plant: FAQ

Where is Plaquemine Cogeneration Plant?: In Iberville 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 Plaquemine Cogeneration Plant?: 1 GW of nameplate capacity across 7 units, as of the EIA-860M release for 2026-07.
Who owns Plaquemine Cogeneration Plant?: EIA-860M names Dow Chemical Co 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 Plaquemine Cogeneration Plant LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Dow Chemical Co 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 "Plaquemine Cogeneration Plant LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Plaquemine Cogeneration Plant still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.