Where is Maine Independence Station?

In Penobscot County, Maine (ME). 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 Maine Independence Station?

550 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.

Who owns Maine Independence Station?

EIA-860M names Casco Bay Energy Co LLC 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 Maine Independence Station LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Casco Bay Energy Co LLC 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 "Maine Independence Station LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Maine Independence Station still running?

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

Maine Independence Station

Maine Independence Station is a 550 MW natural gas power plant in Penobscot County, Maine, operated by Casco Bay Energy Co LLC. EIA-860M lists 3 generating units here, inside ISO New England. Its units 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: 550.2 MW; 497.6 MW net summer
Generating units: 3
In service: 2000
EIA plant ID: 55068

Where it is

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County: Penobscot County, Maine
Coordinates: 44.8242, -68.7094
Balancing authority: ISNE
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Casco Bay Energy Co LLC
Primary energy source: Natural gas
Technologies: Natural Gas Fired Combined Cycle
Status: Operating

Every plant Casco Bay Energy Co LLC reports to EIA →

Maine Independence Station: FAQ

Where is Maine Independence Station?: In Penobscot County, Maine (ME). 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 Maine Independence Station?: 550 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.
Who owns Maine Independence Station?: EIA-860M names Casco Bay Energy Co LLC 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 Maine Independence Station LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Casco Bay Energy Co LLC 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 "Maine Independence Station LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Maine Independence Station still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.