Where is Great Lakes Hydro America - ME?

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 Great Lakes Hydro America - ME?

158 MW of nameplate capacity across 33 units, as of the EIA-860M release for 2026-07.

Who owns Great Lakes Hydro America - ME?

EIA-860M names Great Lakes Hydro America 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 Great Lakes Hydro America - ME LLC?

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

Is Great Lakes Hydro America - ME still running?

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

Great Lakes Hydro America - ME

Great Lakes Hydro America - ME is a 158 MW hydroelectric power plant in Penobscot County, Maine, operated by Great Lakes Hydro America LLC. EIA-860M lists 33 generating units here, inside ISO New England. Its units entered service between 1917 and 2020.

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: 158 MW; 153.1 MW net summer
Generating units: 33
In service: 1917–2020
EIA plant ID: 54134

Where it is

Loading map…

County: Penobscot County, Maine
Coordinates: 45.6472, -68.7044
Balancing authority: ISNE
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Great Lakes Hydro America LLC
Primary energy source: Hydro
Technologies: Batteries, Conventional Hydroelectric
Status: Operating (29) · Out of service and NOT expected to return to service in next calendar year (4)

This site runs on more than one energy source. EIA-860M capacity splits: Hydro 138 MW, Battery 20 MW. It is filed here under Hydro, the source with the most capacity.

Every plant Great Lakes Hydro America LLC reports to EIA →

Great Lakes Hydro America - ME: FAQ

Where is Great Lakes Hydro America - ME?: 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 Great Lakes Hydro America - ME?: 158 MW of nameplate capacity across 33 units, as of the EIA-860M release for 2026-07.
Who owns Great Lakes Hydro America - ME?: EIA-860M names Great Lakes Hydro America 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 Great Lakes Hydro America - ME LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Great Lakes Hydro America 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 "Great Lakes Hydro America - ME LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Great Lakes Hydro America - ME still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.