Great Lakes Hydro America - ME
Hydro project in Penobscot County, Maine. 148.1 MW of nameplate capacity across 29 generators, operated by Great Lakes Hydro America LLC.
Also known as Millinocket Mill Power Station · EIA plant 54134
This project groups Great Lakes Hydro America - ME (EIA 54134). EIA reports them as separate plants.
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 148.1 MWHydro 128.1 · Battery storage 20.0
- Generators
- 29 operatingEIA-860M, August 2026
- Operating since
- July 1917First generator online
- Operator
- Great Lakes Hydro America LLCEIA operator ID 7595
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 1 ISONE nodeResource nodes with prices
- Location
- Penobscot County, ME45.6472, −68.7044
- EIA plant ID
- 54134EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Great Lakes Hydro America - ME produces
Free · EIA-923Net generation, 2025
500 GWh
500,122 MWh, final
Capacity factor, 2025
41.5%
2024: 47.3%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
500.1–737.2
GWh a year. Low 2025, high 2023
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 914,048 | Not reported | 12 of 12 |
| 2001 | 1,028,591 | Not reported | 12 of 12 |
| 2002 | 497,948 | Not reported | 12 of 12 |
| 2003 | 418,032 | Not reported | 11 of 12 |
| 2004 | 692,395 | Not reported | 12 of 12 |
| 2005 | 826,204 | Not reported | 12 of 12 |
| 2006 | 842,017 | Not reported | 12 of 12 |
| 2007 | 788,664 | Not reported | 12 of 12 |
| 2008 | 853,462 | Not reported | 12 of 12 |
| 2009 | 872,352 | Not reported | 12 of 12 |
| 2010 | 780,694 | Not reported | 12 of 12 |
| 2011 | 760,744 | Not reported | 12 of 12 |
| 2012 | 727,625 | 60.0% | 12 of 12 |
| 2013 | 679,375 | 56.2% | 12 of 12 |
| 2014 | 696,797 | 57.6% | 12 of 12 |
| 2015 | 647,006 | 53.5% | 12 of 12 |
| 2016 | 630,122 | 52.0% | 12 of 12 |
| 2017 | 651,668 | 53.9% | 12 of 12 |
| 2018 | 654,480 | 54.1% | 12 of 12 |
| 2019 | 723,111 | 41.1% | 12 of 12 |
| 2020 | 65,870 | Not reported | 1 of 12 |
| 2021 | 546,371 | 45.2% | 12 of 12 |
| 2022 | 539,993 | 44.9% | 12 of 12 |
| 2023 | 737,235 | 61.2% | 12 of 12 |
| 2024 | 570,871 | 47.3% | 12 of 12 |
| 2025 | 500,122 | 41.5% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · ISONEEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| BES1 | Batteries | 10.0 | December 2020 |
| BES2 | Batteries | 10.0 | December 2020 |
| DOH5 | Conventional Hydroelectric | 5.3 | July 1988 |
| DOH6 | Conventional Hydroelectric | 4.1 | July 1975 |
| DOH7 | Conventional Hydroelectric | 4.1 | July 1975 |
| DOH8 | Conventional Hydroelectric | 3.0 | July 1930 |
| EMH1 | Conventional Hydroelectric | 1.6 | July 1948 |
| EMH2 | Conventional Hydroelectric | 1.6 | July 1948 |
| EMH3 | Conventional Hydroelectric | 1.6 | July 1948 |
| EMH4 | Conventional Hydroelectric | 1.6 | July 1948 |
| EMH5 | Conventional Hydroelectric | 1.6 | July 1948 |
| EMH6 | Conventional Hydroelectric | 1.6 | July 1948 |
| MCH1 | Conventional Hydroelectric | 12.2 | July 1953 |
| MCH2 | Conventional Hydroelectric | 12.2 | July 1953 |
| MCH3 | Conventional Hydroelectric | 13.2 | July 1967 |
| MIH3 | Conventional Hydroelectric | 5.5 | July 1917 |
| MIH4 | Conventional Hydroelectric | 5.1 | July 1917 |
| MIH5 | Conventional Hydroelectric | 5.1 | July 1921 |
| MIH6 | Conventional Hydroelectric | 5.1 | July 1921 |
| MIH7 | Conventional Hydroelectric | 4.0 | July 1921 |
| MIH8 | Conventional Hydroelectric | 5.4 | July 1987 |
| MIHI | Conventional Hydroelectric | 5.4 | July 1987 |
| NOH1 | Conventional Hydroelectric | 3.2 | July 1986 |
| NOH2 | Conventional Hydroelectric | 3.2 | July 1986 |
| NOH3 | Conventional Hydroelectric | 3.2 | July 1986 |
| WEH1 | Conventional Hydroelectric | 4.8 | July 1940 |
| WEH2 | Conventional Hydroelectric | 4.8 | July 1940 |
| WEH3 | Conventional Hydroelectric | 4.8 | July 1940 |
| WEH4 | Conventional Hydroelectric | 4.8 | July 1940 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Great Lakes Hydro America LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Great Lakes Hydro America - ME
More plants operated by Great Lakes Hydro America LLC
Questions about Great Lakes Hydro America - ME
How much power does Great Lakes Hydro America - ME produce?
Great Lakes Hydro America - ME reported 500,122 MWh (500 GWh) of net generation in 2025, a 41.5% capacity factor on 148.1 MW of nameplate capacity.
Where is Great Lakes Hydro America - ME?
Great Lakes Hydro America - ME is in Penobscot County, Maine, at 45.6472, −68.7044. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Great Lakes Hydro America - ME?
EIA-860M for August 2026 lists Great Lakes Hydro America LLC as the operator (EIA operator ID 7595). The operator is not always the owner.
When did Great Lakes Hydro America - ME start operating?
Its first generator began operating in July 1917, according to EIA-860M.
Does InfraMap have power prices for Great Lakes Hydro America - ME?
Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to Great Lakes Hydro America - ME, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- ISONE day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page