Upper Barker
Hydro power plant in Androscoggin County, Maine. 1 MW of nameplate capacity across 1 generator, operated by KEI (Maine) Power Management (III) LLC.
Also known as EIA plant 52171
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 1 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- May 1987First generator online
- Operator
- KEI (Maine) Power Management (III) LLCEIA operator ID 56838
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- None linkedNo verified ISO node
- Location
- Androscoggin County, ME44.0869, −70.2293
- EIA plant ID
- 52171EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Upper Barker produces
Free · EIA-923Net generation, 2025
3.96 GWh
3,958 MWh, final
Capacity factor, 2025
45.2%
2024: 53.0%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
3.7–6.6
GWh a year. Low 2015, high 2023
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 3,071 | Not reported | 12 of 12 |
| 2002 | 4,019 | Not reported | 12 of 12 |
| 2003 | 4,900 | Not reported | 12 of 12 |
| 2004 | 4,877 | Not reported | 12 of 12 |
| 2005 | 6,974 | Not reported | 12 of 12 |
| 2006 | 7,539 | Not reported | 12 of 12 |
| 2007 | 4,906 | Not reported | 12 of 12 |
| 2008 | 7,950 | Not reported | 12 of 12 |
| 2009 | 7,442 | Not reported | 12 of 12 |
| 2010 | 3,975 | Not reported | 12 of 12 |
| 2011 | 6,562 | 74.9% | 12 of 12 |
| 2012 | 6,118 | 69.6% | 12 of 12 |
| 2013 | 6,937 | 79.2% | 12 of 12 |
| 2014 | 5,228 | 59.7% | 12 of 12 |
| 2015 | 3,654 | 41.7% | 12 of 12 |
| 2016 | 4,106 | 46.7% | 12 of 12 |
| 2017 | 4,967 | 56.7% | 12 of 12 |
| 2018 | 4,299 | 49.1% | 12 of 12 |
| 2019 | 4,216 | 48.1% | 12 of 12 |
| 2020 | 4,765 | 54.2% | 12 of 12 |
| 2021 | 3,937 | 44.9% | 12 of 12 |
| 2022 | 4,640 | 53.0% | 12 of 12 |
| 2023 | 6,618 | 75.5% | 12 of 12 |
| 2024 | 4,653 | 53.0% | 12 of 12 |
| 2025 | 3,958 | 45.2% | 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 accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
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 |
|---|---|---|---|
| GEN1 | Conventional Hydroelectric | 1.0 | May 1987 |
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 KEI (Maine) Power Management (III) 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 Upper Barker
More plants operated by KEI (Maine) Power Management (III) LLC
Questions about Upper Barker
How much power does Upper Barker produce?
Upper Barker reported 3,958 MWh (3.96 GWh) of net generation in 2025, a 45.2% capacity factor on 1 MW of nameplate capacity.
Where is Upper Barker?
Upper Barker is in Androscoggin County, Maine, at 44.0869, −70.2293. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Upper Barker?
EIA-860M for August 2026 lists KEI (Maine) Power Management (III) LLC as the operator (EIA operator ID 56838). The operator is not always the owner.
When did Upper Barker start operating?
Its first generator began operating in May 1987, according to EIA-860M.
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)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page