Cooper Lake
Hydro power plant in Kenai Peninsula, Alaska. 19.4 MW of nameplate capacity across 2 generators, operated by Chugach Electric Assn Inc.
Also known as Cooper Lake Powerhouse · EIA plant 6291
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 19.4 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- May 1961First generator online
- Operator
- Chugach Electric Assn IncEIA operator ID 3522
- Grid
- Not reported
- Price nodes
- None linkedNo verified ISO node
- Location
- Kenai Peninsula, AK60.3923, −149.6656
- EIA plant ID
- 6291EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Cooper Lake produces
Free · EIA-923Net generation, 2025
52.5 GWh
52,521 MWh, final
Capacity factor, 2025
30.9%
2024: 22.4%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
16.4–86.7
GWh a year. Low 2015, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 14,263 | Not reported | 12 of 12 |
| 2001 | 59,447 | Not reported | 12 of 12 |
| 2002 | 65,555 | Not reported | 12 of 12 |
| 2003 | 47,662 | Not reported | 12 of 12 |
| 2004 | 48,351 | Not reported | 12 of 12 |
| 2005 | 34,043 | Not reported | 12 of 12 |
| 2006 | 30,089 | Not reported | 12 of 12 |
| 2007 | 24,303 | Not reported | 12 of 12 |
| 2008 | 6,663 | Not reported | 12 of 12 |
| 2009 | 33,262 | Not reported | 12 of 12 |
| 2010 | 45,390 | 26.7% | 12 of 12 |
| 2011 | 28,759 | 16.9% | 12 of 12 |
| 2012 | 77,589 | 45.5% | 12 of 12 |
| 2013 | 35,928 | 21.1% | 12 of 12 |
| 2014 | 32,050 | 18.9% | 12 of 12 |
| 2015 | 16,425 | 9.7% | 12 of 12 |
| 2016 | 86,666 | 50.9% | 12 of 12 |
| 2017 | 25,713 | 15.1% | 12 of 12 |
| 2018 | 59,832 | 35.2% | 12 of 12 |
| 2019 | 46,102 | 27.1% | 12 of 12 |
| 2020 | 60,854 | 35.7% | 12 of 12 |
| 2021 | 36,381 | 21.4% | 12 of 12 |
| 2022 | 34,055 | 20.0% | 12 of 12 |
| 2023 | 46,389 | 27.3% | 12 of 12 |
| 2024 | 38,101 | 22.4% | 12 of 12 |
| 2025 | 52,521 | 30.9% | 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 |
|---|---|---|---|
| 1 | Conventional Hydroelectric | 9.7 | May 1961 |
| 2 | Conventional Hydroelectric | 9.7 | May 1961 |
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 Chugach Electric Assn Inc 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 Cooper Lake
More plants operated by Chugach Electric Assn Inc
Questions about Cooper Lake
How much power does Cooper Lake produce?
Cooper Lake reported 52,521 MWh (52.5 GWh) of net generation in 2025, a 30.9% capacity factor on 19.4 MW of nameplate capacity.
Where is Cooper Lake?
Cooper Lake is in Kenai Peninsula, Alaska, at 60.3923, −149.6656.
Who operates Cooper Lake?
EIA-860M for August 2026 lists Chugach Electric Assn Inc as the operator (EIA operator ID 3522). The operator is not always the owner.
When did Cooper Lake start operating?
Its first generator began operating in May 1961, 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)
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page