Seneca Generation LLC
Pumped storage power plant in Warren County, Pennsylvania. 437.9 MW of nameplate capacity across 3 generators, operated by Seneca Generation LLC.
Also known as Seneca Pumped Storage Generating Station · EIA plant 8225
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 437.9 MWPumped storage 411.8 · Hydro 26.1
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- June 1970First generator online
- Operator
- Seneca Generation LLCEIA operator ID 59524
- Grid
- PJMBalancing authority PJM
- Price nodes
- 3 PJM nodesResource nodes with prices
- Location
- Warren County, PA41.8389, −79.0056
- EIA plant ID
- 8225EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Seneca Generation produces
Free · EIA-923Net generation, 2025
−353 GWh
−353,313 MWh, final
Capacity factor, 2025
Not reported
2024: Not reported
January to July 2026
−198 GWh
Provisional
Range, 2015 to 2025
−374.0–−169.9
GWh a year. Low 2024, high 2021
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | −78,230 | Not reported | 12 of 12 |
| 2001 | −207,836 | Not reported | 12 of 12 |
| 2002 | −201,635 | Not reported | 12 of 12 |
| 2003 | −246,761 | Not reported | 12 of 12 |
| 2004 | −214,491 | Not reported | 12 of 12 |
| 2005 | −246,551 | Not reported | 12 of 12 |
| 2006 | −244,576 | Not reported | 12 of 12 |
| 2007 | −231,213 | Not reported | 12 of 12 |
| 2008 | −265,434 | Not reported | 12 of 12 |
| 2009 | −257,966 | Not reported | 12 of 12 |
| 2010 | −266,075 | Not reported | 12 of 12 |
| 2011 | −133,817 | Not reported | 12 of 12 |
| 2012 | −141,471 | Not reported | 12 of 12 |
| 2013 | −138,976 | Not reported | 12 of 12 |
| 2014 | −174,812 | Not reported | 12 of 12 |
| 2015 | −189,924 | Not reported | 12 of 12 |
| 2016 | −200,991 | Not reported | 12 of 12 |
| 2017 | −191,829 | Not reported | 12 of 12 |
| 2018 | −237,503 | Not reported | 12 of 12 |
| 2019 | −185,425 | Not reported | 12 of 12 |
| 2020 | −169,886 | Not reported | 12 of 12 |
| 2021 | −169,856 | Not reported | 12 of 12 |
| 2022 | −292,490 | Not reported | 12 of 12 |
| 2023 | −346,117 | Not reported | 12 of 12 |
| 2024 | −374,033 | Not reported | 12 of 12 |
| 2025 | −353,313 | Not reported | 12 of 12 |
| 2026 (provisional, partial year) | −197,773 | Not reported | 7 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 |
|---|---|---|---|
| 1 | Hydroelectric Pumped Storage | 205.9 | June 1970 |
| 2 | Hydroelectric Pumped Storage | 205.9 | June 1970 |
| 3 | Conventional Hydroelectric | 26.1 | June 1970 |
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 Seneca Generation 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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Questions about Seneca Generation
How much power does Seneca Generation LLC produce?
Seneca Generation LLC reported −353,313 MWh (−353 GWh) of net generation in 2025. From January to July 2026 it reported −198 GWh, which is provisional.
Where is Seneca Generation LLC?
Seneca Generation LLC is in Warren County, Pennsylvania, at 41.8389, −79.0056. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Seneca Generation LLC?
EIA-860M for August 2026 lists Seneca Generation LLC as the operator (EIA operator ID 59524). The operator is not always the owner.
When did Seneca Generation LLC start operating?
Its first generator began operating in June 1970, according to EIA-860M.
Does InfraMap have power prices for Seneca Generation LLC?
Yes. InfraMap has PJM day-ahead and real-time prices at 3 price nodes linked to Seneca Generation LLC, 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
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page