Where is Pfizer Groton Plant?

In New London County, Connecticut (CT). 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 Pfizer Groton Plant?

38 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.

Who owns Pfizer Groton Plant?

EIA-860M names Pfizer Inc 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 Pfizer Groton Plant LLC?

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

Is Pfizer Groton Plant still running?

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

Pfizer Groton Plant

Pfizer Groton Plant is a 38 MW natural gas power plant in New London County, Connecticut, operated by Pfizer Inc. EIA-860M lists 4 generating units here, inside ISO New England. Its units entered service between 1952 and 2009.

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: 37.5 MW; 32 MW net summer
Generating units: 4
In service: 1952–2009
EIA plant ID: 54236

Where it is

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County: New London County, Connecticut
Coordinates: 41.3315, -72.0786
Balancing authority: ISNE
Sector: Industrial CHP

Units, technology and status

Operator of record: Pfizer Inc
Primary energy source: Natural gas
Technologies: Natural Gas Fired Combustion Turbine, Natural Gas Steam Turbine
Status: Operating

Every plant Pfizer Inc reports to EIA →

Pfizer Groton Plant: FAQ

Where is Pfizer Groton Plant?: In New London County, Connecticut (CT). 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 Pfizer Groton Plant?: 38 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.
Who owns Pfizer Groton Plant?: EIA-860M names Pfizer Inc 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 Pfizer Groton Plant LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Pfizer Inc 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 "Pfizer Groton Plant LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Pfizer Groton Plant still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.