Ellsworth Hydro Station
Hydro power plant in Hancock County, Maine. 8.9 MW of nameplate capacity across 4 generators, operated by Brookfield Black Bear Hydro, LLC.
Also known as Ellsworth Power House · EIA plant 1469
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 8.9 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- July 1924First generator online
- Operator
- Brookfield Black Bear Hydro, LLCEIA operator ID 59178
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 1 ISONE nodeResource nodes with prices
- Location
- Hancock County, ME44.5442, −68.4306
- EIA plant ID
- 1469EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Ellsworth Hydro Station produces
Free · EIA-923Net generation, 2025
18.3 GWh
18,252 MWh, final
Capacity factor, 2025
23.4%
2024: 28.0%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
18.3–37.0
GWh a year. Low 2025, high 2019
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 13,372 | Not reported | 12 of 12 |
| 2002 | 35,587 | Not reported | 12 of 12 |
| 2003 | 35,536 | Not reported | 12 of 12 |
| 2004 | 22,251 | Not reported | 12 of 12 |
| 2005 | 41,011 | Not reported | 12 of 12 |
| 2006 | 29,946 | Not reported | 12 of 12 |
| 2007 | 28,088 | Not reported | 12 of 12 |
| 2008 | 43,356 | Not reported | 12 of 12 |
| 2009 | 36,676 | Not reported | 12 of 12 |
| 2010 | 30,418 | 39.0% | 12 of 12 |
| 2011 | 31,475 | 40.4% | 12 of 12 |
| 2012 | 29,628 | 37.9% | 12 of 12 |
| 2013 | 29,720 | 38.1% | 12 of 12 |
| 2014 | 35,708 | 45.8% | 12 of 12 |
| 2015 | 26,572 | 34.1% | 12 of 12 |
| 2016 | 23,067 | 29.5% | 12 of 12 |
| 2017 | 22,281 | 28.6% | 12 of 12 |
| 2018 | 25,926 | 33.3% | 12 of 12 |
| 2019 | 36,951 | 47.4% | 12 of 12 |
| 2020 | 21,948 | 28.1% | 12 of 12 |
| 2021 | 26,324 | 33.8% | 12 of 12 |
| 2022 | 28,317 | 36.3% | 12 of 12 |
| 2023 | 35,047 | 45.0% | 12 of 12 |
| 2024 | 21,890 | 28.0% | 12 of 12 |
| 2025 | 18,252 | 23.4% | 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 |
|---|---|---|---|
| EL01 | Conventional Hydroelectric | 2.5 | July 1924 |
| EL02 | Conventional Hydroelectric | 2.0 | July 1938 |
| EL03 | Conventional Hydroelectric | 2.0 | July 1938 |
| EL04 | Conventional Hydroelectric | 2.4 | July 1924 |
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 Brookfield Black Bear Hydro, 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 Ellsworth Hydro Station
More plants operated by Brookfield Black Bear Hydro, LLC
Questions about Ellsworth Hydro Station
How much power does Ellsworth Hydro Station produce?
Ellsworth Hydro Station reported 18,252 MWh (18.3 GWh) of net generation in 2025, a 23.4% capacity factor on 8.9 MW of nameplate capacity.
Where is Ellsworth Hydro Station?
Ellsworth Hydro Station is in Hancock County, Maine, at 44.5442, −68.4306. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Ellsworth Hydro Station?
EIA-860M for August 2026 lists Brookfield Black Bear Hydro, LLC as the operator (EIA operator ID 59178). The operator is not always the owner.
When did Ellsworth Hydro Station start operating?
Its first generator began operating in July 1924, according to EIA-860M.
Does InfraMap have power prices for Ellsworth Hydro Station?
Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to Ellsworth Hydro Station, 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