Willow Island Hydroelectric Plant
Hydro power plant in Pleasants County, West Virginia. 44 MW of nameplate capacity across 2 generators, operated by American Mun Power-Ohio, Inc.
Also known as EIA plant 57401
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 44 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- January 2016First generator online
- Operator
- American Mun Power-Ohio, IncEIA operator ID 40577
- Grid
- PJMBalancing authority PJM
- Price nodes
- 2 PJM nodesResource nodes with prices
- Location
- Pleasants County, WV39.3578, −81.3179
- EIA plant ID
- 57401EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Willow Island Hydroelectric Plant produces
Free · EIA-923Net generation, 2025
198 GWh
198,309 MWh, final
Capacity factor, 2025
51.5%
2024: 47.2%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2016 to 2025
182.5–265.6
GWh a year. Low 2024, high 2021
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | 0 | Not reported | 1 of 12 |
| 2016 | 231,883 | Not reported | 12 of 12 |
| 2017 | 230,462 | 59.8% | 12 of 12 |
| 2018 | 207,697 | 53.9% | 12 of 12 |
| 2019 | 243,590 | 63.2% | 12 of 12 |
| 2020 | 207,450 | 53.7% | 12 of 12 |
| 2021 | 265,570 | 68.9% | 12 of 12 |
| 2022 | 212,814 | 55.2% | 12 of 12 |
| 2023 | 220,355 | 57.2% | 12 of 12 |
| 2024 | 182,479 | 47.2% | 12 of 12 |
| 2025 | 198,309 | 51.5% | 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 · PJMEmissions
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 |
|---|---|---|---|
| WIG1 | Conventional Hydroelectric | 22.0 | January 2016 |
| WIG2 | Conventional Hydroelectric | 22.0 | February 2016 |
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 American Mun Power-Ohio, 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 Willow Island Hydroelectric Plant
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Questions about Willow Island Hydroelectric Plant
How much power does Willow Island Hydroelectric Plant produce?
Willow Island Hydroelectric Plant reported 198,309 MWh (198 GWh) of net generation in 2025, a 51.5% capacity factor on 44 MW of nameplate capacity.
Where is Willow Island Hydroelectric Plant?
Willow Island Hydroelectric Plant is in Pleasants County, West Virginia, at 39.3578, −81.3180. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Willow Island Hydroelectric Plant?
EIA-860M for August 2026 lists American Mun Power-Ohio, Inc as the operator (EIA operator ID 40577). The operator is not always the owner.
When did Willow Island Hydroelectric Plant start operating?
Its first generator began operating in January 2016, according to EIA-860M.
Does InfraMap have power prices for Willow Island Hydroelectric Plant?
Yes. InfraMap has PJM day-ahead and real-time prices at 2 price nodes linked to Willow Island Hydroelectric Plant, 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)
- PJM day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page