# Seneca Generation LLC

PJM Hydroelectric Pumped Storage, Conventional Hydroelectric · https://askthegrid.com/assets/facilities/seneca-generation-llc

Seneca Generation LLC is a battery energy storage facility with 437.9 MW of EIA-reported nameplate capacity in Warren County, Pennsylvania, registered as EIA Plant ID 8225. The EIA plant record ranks Seneca Generation LLC #54 in the United States and #2 in Pennsylvania by plant capacity. FERC identifies the associated Kinzua project as a hybrid facility with two reversible pump-turbines and one conventional hydroelectric unit.

## Key facts

- Technology: Hydroelectric Pumped Storage, Conventional Hydroelectric
- Power capacity: 437.90000000000003 MW
- Operating status: operating

## Grid and market context

- ISO/RTO: PJM
- Balancing authority: PJM
- Substation: Glade
- Point of interconnection: Glade
- Interconnection voltage: 230 kV

## Source-backed facts

- Owner logo domain: revrenewables.com — Current Facilities - REV | Renewables & Energy Storage · confidence: medium
- Identifiers: [{"value":"8225","system":"EIA plant code"},{"value":"5019","system":"EIA generator record"},{"value":"5020","system":"EIA generator record"},{"value":"5021","system":"EIA generator record"},{"value":"P-2280","system":"FERC project number"},{"value":"P-2280-018","system":"FERC project docket"},{"value":"PJM","system":"ISO/RTO"},{"value":"PENELEC","system":"PJM zone"},{"value":"SENECA 1","system":"PJM RPM market resource"},{"value":"SENECA 2","system":"PJM RPM market resource"},{"value":"SENECA 3","system":"PJM RPM market resource"}] — MBR | Index · confidence: medium
- Identifiers: [{"value":"8225","system":"EIA plant code"},{"value":"5019","system":"EIA generator record"},{"value":"5020","system":"EIA generator record"},{"value":"5021","system":"EIA generator record"},{"value":"P-2280","system":"FERC project number"},{"value":"P-2280-018","system":"FERC project docket"},{"value":"PJM","system":"ISO/RTO"},{"value":"PENELEC","system":"PJM zone"},{"value":"SENECA 1","system":"PJM RPM market resource"},{"value":"SENECA 2","system":"PJM RPM market resource"},{"value":"SENECA 3","system":"PJM RPM market resource"}] — Federal Register :: Seneca Generation, LLC; Notice of Application Accepted for Filing, Soliciting Motions To Intervene and Protests, Ready for Environmental Analysis, and Soliciting Comments, Recommendations, Preliminary Terms and Conditions, and Preliminary Fishway Prescriptions · confidence: medium
- Identifiers: [{"value":"8225","system":"EIA plant code"},{"value":"5019","system":"EIA generator record"},{"value":"5020","system":"EIA generator record"},{"value":"5021","system":"EIA generator record"},{"value":"P-2280","system":"FERC project number"},{"value":"P-2280-018","system":"FERC project docket"},{"value":"PJM","system":"ISO/RTO"},{"value":"PENELEC","system":"PJM zone"},{"value":"SENECA 1","system":"PJM RPM market resource"},{"value":"SENECA 2","system":"PJM RPM market resource"},{"value":"SENECA 3","system":"PJM RPM market resource"}] — Sheet1 · confidence: medium
- Owner name: REV Renewables — REV Renewables Launches with 2.4 GW Clean Energy Portfolio · confidence: medium
- Description: Seneca Generation LLC is an operational hydroelectric facility in Warren County, Pennsylvania, using pumped-storage and conventional hydroelectric generation. EIA plant 8225 has 437.9 MW of nameplate capacity, 463.4 MW of summer and winter capacity, and three operational generating units; its first unit came online in 1970. The project is identified by FERC as the Kinzua Pumped Storage Hydroelectric Project, located on the Allegheny River in Warren County. — Federal Register :: Seneca Generation, LLC; Notice of Application Accepted for Filing, Soliciting Motions To Intervene and Protests, Ready for Environmental Analysis, and Soliciting Comments, Recommendations, Preliminary Terms and Conditions, and Preliminary Fishway Prescriptions · confidence: medium
- Parties: [{"relationship":"Current owner","name":"REV Renewables","official_url":"https://www.revrenewables.com/"},{"relationship":"Parent company","name":"LS Power","official_url":"https://www.lspower.com/"},{"relationship":"Operator and FERC licensee","name":"Seneca Generation LLC","official_url":null}] — Current Facilities - REV | Renewables & Energy Storage · confidence: medium
- Parties: [{"relationship":"Current owner","name":"REV Renewables","official_url":"https://www.revrenewables.com/"},{"relationship":"Parent company","name":"LS Power","official_url":"https://www.lspower.com/"},{"relationship":"Operator and FERC licensee","name":"Seneca Generation LLC","official_url":null}] — REV Renewables Launches with 2.4 GW Clean Energy Portfolio · confidence: medium
- Identifiers.0: {"value":"8225","system":"EIA plant code"} — MBR | Index · confidence: high
- Identifiers.1: {"value":"5019","system":"EIA generator record"} — MBR | Index · confidence: high
- Identifiers.2: {"value":"5020","system":"EIA generator record"} — MBR | Index · confidence: high
- Identifiers.3: {"value":"5021","system":"EIA generator record"} — MBR | Index · confidence: high
- Identifiers.7: {"value":"PENELEC","system":"PJM zone"} — Sheet1 · confidence: high
- Identifiers.8: {"value":"SENECA 1","system":"PJM RPM market resource"} — Sheet1 · confidence: medium
- Identifiers.9: {"value":"SENECA 2","system":"PJM RPM market resource"} — Sheet1 · confidence: medium
- Identifiers.10: {"value":"SENECA 3","system":"PJM RPM market resource"} — Sheet1 · confidence: medium
- Parties.0: {"relationship":"Current owner","name":"REV Renewables","official_url":"https://www.revrenewables.com/"} — Current Facilities - REV | Renewables & Energy Storage · confidence: medium
- Parties.1: {"relationship":"Parent company","name":"LS Power","official_url":"https://www.lspower.com/"} — REV Renewables Launches with 2.4 GW Clean Energy Portfolio · confidence: high
- Interconnection: Glade substation, connected by a transmission line from the powerhouse. — Federal Register :: Seneca Generation, LLC; Notice of Application Accepted for Filing, Soliciting Motions To Intervene and Protests, Ready for Environmental Analysis, and Soliciting Comments, Recommendations, Preliminary Terms and Conditions, and Preliminary Fishway Prescriptions · confidence: medium
- Site acres: 226.7 — Federal Register :: Seneca Generation, LLC; Notice of Application Accepted for Filing, Soliciting Motions To Intervene and Protests, Ready for Environmental Analysis, and Soliciting Comments, Recommendations, Preliminary Terms and Conditions, and Preliminary Fishway Prescriptions · confidence: medium
- Unit configuration: Two reversible pumped-storage pump-turbines and one conventional hydroelectric unit. — Federal Register :: Seneca Generation, LLC; Notice of Application Accepted for Filing, Soliciting Motions To Intervene and Protests, Ready for Environmental Analysis, and Soliciting Comments, Recommendations, Preliminary Terms and Conditions, and Preliminary Fishway Prescriptions · confidence: high
- Construction scope: The Kinzua Pumped Storage Hydroelectric Project at Kinzua Dam on the Allegheny River in Warren County, Pennsylvania, includes a powerhouse with two reversible pump-turbines and one conventional hydro unit, with 451,800 kW of installed project capacity. The physical scope also includes the Allegheny Reservoir intake, an upper reservoir with 5,697 acre-feet of usable storage, water-conveyance tunnels and penstocks, a transmission line to the Glade substation, and appurtenant operating equipment. A technical plant presentation identifies the three units as Unit 1 at 218 MW, Unit 2 at 195 MW, and Unit 3 at 30 MW; current EIA-based records list three operational units and 437.9 MW of nameplate capacity. — Federal Register :: Seneca Generation, LLC; Notice of Application Accepted for Filing, Soliciting Motions To Intervene and Protests, Ready for Environmental Analysis, and Soliciting Comments, Recommendations, Preliminary Terms and Conditions, and Preliminary Fishway Prescriptions · confidence: medium
- Construction scope: The Kinzua Pumped Storage Hydroelectric Project at Kinzua Dam on the Allegheny River in Warren County, Pennsylvania, includes a powerhouse with two reversible pump-turbines and one conventional hydro unit, with 451,800 kW of installed project capacity. The physical scope also includes the Allegheny Reservoir intake, an upper reservoir with 5,697 acre-feet of usable storage, water-conveyance tunnels and penstocks, a transmission line to the Glade substation, and appurtenant operating equipment. A technical plant presentation identifies the three units as Unit 1 at 218 MW, Unit 2 at 195 MW, and Unit 3 at 30 MW; current EIA-based records list three operational units and 437.9 MW of nameplate capacity. — PPT - Seneca Overview & Generator Rewind PowerPoint Presentation, free download - ID:3262133 · confidence: medium
- Product url: https://hii.com/news/photo-release-newport-news-shipbuilding-celebrates-130th-anniversary — NEWPORT NEWS SHIPBUILDING CELEBRATES 130TH... · confidence: medium
- Manufacturer domain: hii.com — PPT - Seneca Overview & Generator Rewind PowerPoint Presentation, free download - ID:3262133 · confidence: medium
- Equipment models: [{"manufacturer_domain":"hii.com","product_url":"https://hii.com/news/photo-release-newport-news-shipbuilding-celebrates-130th-anniversary","count":1,"unit_mw":218,"name":"Unit 1 Newport News pump-turbine with Voith runner"},{"manufacturer_domain":"hii.com","product_url":"https://hii.com/news/photo-release-newport-news-shipbuilding-celebrates-130th-anniversary","count":1,"unit_mw":195,"name":"Unit 2 Newport News pump-turbine with Voith runner"},{"manufacturer_domain":null,"product_url":null,"count":1,"unit_mw":30,"name":"Unit 3 conventional hydro / black-start unit"},{"manufacturer_domain":"westinghouse.com","product_url":null,"count":3,"unit_mw":null,"name":"Westinghouse motor-generators"},{"manufacturer_domain":"andritz.com","product_url":"https://www.andritz.com/products-en/group/products/pumped-storage","count":null,"unit_mw":null,"name":"ANDRITZ Hydro turbines"},{"manufacturer_domain":"hii.com","product_url":null,"count":null,"unit_mw":null,"name":"Newport News Industrial turbines"}] — Federal Register :: Seneca Generation, LLC; Notice of Application Accepted for Filing, Soliciting Motions To Intervene and Protests, Ready for Environmental Analysis, and Soliciting Comments, Recommendations, Preliminary Terms and Conditions, and Preliminary Fishway Prescriptions · confidence: medium
- Product family: Pump-turbines with Voith runners — PPT - Seneca Overview & Generator Rewind PowerPoint Presentation, free download - ID:3262133 · confidence: medium
- Manufacturer name: Newport News Shipbuilding — Equipment Monitoring: Installing a Condition Monitoring System at a Pumped-Storage Plant · confidence: medium
- Manufacturer name: Newport News Shipbuilding — PPT - Seneca Overview & Generator Rewind PowerPoint Presentation, free download - ID:3262133 · confidence: medium
- Equipment models.2: {"manufacturer_domain":null,"product_url":null,"count":1,"unit_mw":30,"name":"Unit 3 conventional hydro / black-start unit"} — Federal Register :: Seneca Generation, LLC; Notice of Application Accepted for Filing, Soliciting Motions To Intervene and Protests, Ready for Environmental Analysis, and Soliciting Comments, Recommendations, Preliminary Terms and Conditions, and Preliminary Fishway Prescriptions · confidence: medium
- Equipment models.2: {"manufacturer_domain":null,"product_url":null,"count":1,"unit_mw":30,"name":"Unit 3 conventional hydro / black-start unit"} — PPT - Seneca Overview & Generator Rewind PowerPoint Presentation, free download - ID:3262133 · confidence: medium
- Equipment models.3: {"manufacturer_domain":"westinghouse.com","product_url":null,"count":3,"unit_mw":null,"name":"Westinghouse motor-generators"} — PPT - Seneca Overview & Generator Rewind PowerPoint Presentation, free download - ID:3262133 · confidence: medium
- Significance: The EIA plant record ranks Seneca Generation LLC #54 in the United States and #2 in Pennsylvania by plant capacity. FERC identifies the associated Kinzua project as a hybrid facility with two reversible pump-turbines and one conventional hydroelectric unit. — Source · confidence: medium
- Quality notes: ["Capacity figures vary by source and reporting scope: EIA lists 437.9 MW of nameplate capacity, the FERC project filing lists 451.8 MW of installed capacity, and REV Renewables and LS Power materials list 508 MW.","The approximately $395 million consideration disclosed for the February 2014 transaction applied to the 11-project FirstEnergy hydroelectric portfolio, not to Seneca alone.","A $400 million financing disclosed in April 2016 was a refinancing of the Seneca station through 10-year senior secured notes. — Source · confidence: medium
- Quality notes: ["Capacity figures vary by source and reporting scope: EIA lists 437.9 MW of nameplate capacity, the FERC project filing lists 451.8 MW of installed capacity, and REV Renewables and LS Power materials list 508 MW.","The approximately $395 million consideration disclosed for the February 2014 transaction applied to the 11-project FirstEnergy hydroelectric portfolio, not to Seneca alone.","A $400 million financing disclosed in April 2016 was a refinancing of the Seneca station through 10-year senior secured notes. — Current Facilities - REV | Renewables & Energy Storage · confidence: medium
- Quality notes: ["Capacity figures vary by source and reporting scope: EIA lists 437.9 MW of nameplate capacity, the FERC project filing lists 451.8 MW of installed capacity, and REV Renewables and LS Power materials list 508 MW.","The approximately $395 million consideration disclosed for the February 2014 transaction applied to the 11-project FirstEnergy hydroelectric portfolio, not to Seneca alone.","A $400 million financing disclosed in April 2016 was a refinancing of the Seneca station through 10-year senior secured notes. — LS Power Completes a Refinancing of the Seneca Pumped Storage Hydro Generating Station - LS Power · confidence: medium
- Quality notes: ["Capacity figures vary by source and reporting scope: EIA lists 437.9 MW of nameplate capacity, the FERC project filing lists 451.8 MW of installed capacity, and REV Renewables and LS Power materials list 508 MW.","The approximately $395 million consideration disclosed for the February 2014 transaction applied to the 11-project FirstEnergy hydroelectric portfolio, not to Seneca alone.","A $400 million financing disclosed in April 2016 was a refinancing of the Seneca station through 10-year senior secured notes. — FE-12.31.2013-10K · confidence: medium
- Financing summary: In April 2016, LS Power Equity Advisors, through a private fund it managed, completed a refinancing of the Seneca Pumped Storage Generating Station. The refinancing issued $400 million of 10-year senior secured notes through a private offering to institutional investors. Separately, FirstEnergy's February 2014 sale of 11 hydroelectric stations to Harbor Hydro Holdings LLC was reported at approximately $395 million; that amount was portfolio sale consideration, not Seneca-specific project financing. — LS Power Completes a Refinancing of the Seneca Pumped Storage Hydro Generating Station - LS Power · confidence: high
- Financing summary: In April 2016, LS Power Equity Advisors, through a private fund it managed, completed a refinancing of the Seneca Pumped Storage Generating Station. The refinancing issued $400 million of 10-year senior secured notes through a private offering to institutional investors. Separately, FirstEnergy's February 2014 sale of 11 hydroelectric stations to Harbor Hydro Holdings LLC was reported at approximately $395 million; that amount was portfolio sale consideration, not Seneca-specific project financing. — FE-12.31.2013-10K · confidence: high
- Commercial parties.0: {"relationship":"Current owner","name":"REV Renewables","detail":"REV's current-facilities listing identifies Seneca in Warren, Pennsylvania, in PJM, with 100% ownership.","official_url":"https://www.revrenewables.com/"} — Current Facilities - REV | Renewables & Energy Storage · confidence: medium
- Commercial parties.1: {"relationship":"Parent company","name":"LS Power","detail":"REV Renewables is an LS Power company and was formed to bring together LS Power's renewable and energy-storage assets.","official_url":"https://www.lspower.com/"} — REV Renewables Launches as a National Leader in Clean Energy and Storage - REV | Renewables & Energy Storage · confidence: high
- Quality notes.0: Capacity figures vary by source and reporting scope: EIA lists 437.9 MW of nameplate capacity, the FERC project filing lists 451.8 MW of installed capacity, and REV Renewables and LS Power materials list 508 MW. — Source · confidence: medium
- Quality notes.1: The approximately $395 million consideration disclosed for the February 2014 transaction applied to the 11-project FirstEnergy hydroelectric portfolio, not to Seneca alone. — FE-12.31.2013-10K · confidence: high
- Quality notes.2: A $400 million financing disclosed in April 2016 was a refinancing of the Seneca station through 10-year senior secured notes; it should not be treated as the project's acquisition price or original construction financing. — LS Power Completes a Refinancing of the Seneca Pumped Storage Hydro Generating Station - LS Power · confidence: medium
- Quality notes.2: A $400 million financing disclosed in April 2016 was a refinancing of the Seneca station through 10-year senior secured notes; it should not be treated as the project's acquisition price or original construction financing. — FE-12.31.2013-10K · confidence: medium
- Timeline.3: {"event":"FERC sale authorization","date":"2013-11","detail":"FERC authorized the disposition and acquisition of jurisdictional facilities related to FirstEnergy's sale of 11 hydroelectric plants to an LS Power unit; license transfers were handled separately."} — FERC OKs sale of 11 FirstEnergy hydro plants; license transfers pending · confidence: high
- Timeline.4: {"event":"Acquisition and portfolio sale completed","date":"2014-02-12","detail":"The sale of 11 FirstEnergy hydroelectric plants closed for approximately $395 million. Seneca was acquired by Harbor Hydro Holdings LLC, an LS Power affiliate, from FirstEnergy-related owners."} — FE-12.31.2013-10K · confidence: high
- Timeline.5: {"event":"Relicensing application","date":"2013-12-02","detail":"Seneca Generation LLC filed a new major license application for the Kinzua Pumped Storage Hydroelectric Project, FERC Project No. 2280-018."} — LS Power Completes a Refinancing of the Seneca Pumped Storage Hydro Generating Station - LS Power · confidence: high
- Timeline.6: {"event":"Refinancing","date":"2016-04-27","detail":"LS Power Equity Advisors completed a $400 million refinancing through a private offering of 10-year senior secured notes to institutional investors."} — Accelerating the Energy Transition · confidence: medium
- Timeline.7: {"event":"REV Renewables formation","date":"2021-07","detail":"REV Renewables was formed from LS Power's existing renewable and energy-storage assets and subsequently became the platform listing Seneca as a current facility."} — Seneca Generation, LLC; Notice of Application Accepted... · confidence: medium
- Transaction scope: portfolio_includes_asset — Hydro Holdings LLC completes acquisition of 11 hydropower projects · confidence: high
- Substation: Glade — Federal Register :: Seneca Generation, LLC; Notice of Application Accepted for Filing, Soliciting Motions To Intervene and Protests, Ready for Environmental Analysis, and Soliciting Comments, Recommendations, Preliminary Terms and Conditions, and Preliminary Fishway Prescriptions · confidence: high
- Interconnection voltage kv: 230 — NYISO Operating Study Winter 2016-17 · confidence: medium

## Timeline

- 2013-11 — FERC sale authorization
  FERC authorized the disposition and acquisition of jurisdictional facilities related to FirstEnergy's sale of 11 hydroelectric plants to an LS Power unit; license transfers were handled separately.
  Source: FERC OKs sale of 11 FirstEnergy hydro plants; license transfers pending (https://www.renewableenergyworld.com/energy-business/energy-finance/ferc-oks-sale-of-11-firstenergy-hydro-plants-license-transfers-pending/)
- 2016-04-27 — Refinancing
  LS Power Equity Advisors completed a $400 million refinancing through a private offering of 10-year senior secured notes to institutional investors.
  Source: LS Power Completes a Refinancing of the Seneca Pumped Storage Hydro Generating Station - LS Power (https://www.lspower.com/news/ls-power-completes-refinancing-seneca-pumped-storage-generating-station/)

## Sources

- [Current Facilities - REV | Renewables & Energy Storage](https://www.revrenewables.com/facilities/) — revrenewables.com · tier other
- [Source](https://mbrweb.ferc.gov/SearchlkpEIA/Index?page=101) — mbrweb.ferc.gov · tier regulatory
- [Federal Register :: Seneca Generation, LLC; Notice of Application Accepted for Filing, Soliciting Motions To Intervene and Protests, Ready for Environmental Analysis, and Soliciting Comments, Recommendations, Preliminary Terms and Conditions, and Preliminary Fishway Prescriptions](https://www.federalregister.gov/documents/2014/05/06/2014-10312/seneca-generation-llc-notice-of-application-accepted-for-filing-soliciting-motions-to-intervene-and) — federalregister.gov · tier regulatory
- [Sheet1](https://www.pjm.com/-/media/DotCom/markets-ops/rpm/rpm-auction-info/2025-2026/2025-2026-rpm-existing-resource-list-post.xlsx) — pjm.com · tier other
- [REV Renewables Launches as a National Leader in Clean Energy and Storage - REV | Renewables & Energy Storage](https://www.revrenewables.com/ls-power-launches-rev-renewables/) — revrenewables.com · tier other
- [PPT - Seneca Overview & Generator Rewind PowerPoint Presentation, free download - ID:3262133](https://www.slideserve.com/iorwen/seneca-overview-generator-rewind) — slideserve.com · tier other
- [NEWPORT NEWS SHIPBUILDING CELEBRATES 130TH ...](https://hii.com/news/photo-release-newport-news-shipbuilding-celebrates-130th-anniversary) — hii.com · tier other
- [Equipment Monitoring: Installing a Condition Monitoring System at a Pumped-Storage Plant](https://www.renewableenergyworld.com/hydro-power/technology-equipment/equipment-monitoring-installing-a-condition-monitoring-system-a/) — renewableenergyworld.com · tier other
- [Source](https://federalregister.gov/documents/2014/05/06/2014-10312/seneca-generation-llc-notice-of-application-accepted-for-filing-soliciting-motions-to-intervene-and) — federalregister.gov · tier regulatory
- [Hydro Holdings LLC completes acquisition of 11 hydropower projects](https://www.renewableenergyworld.com/energy-business/energy-finance/hydro-holdings-llc-completes-acquisition-of-11-hydropower-projects/) — renewableenergyworld.com · tier other
- [LS Power Completes a Refinancing of the Seneca Pumped Storage Hydro Generating Station - LS Power](https://www.lspower.com/news/ls-power-completes-refinancing-seneca-pumped-storage-generating-station/) — lspower.com · tier other
- [FE-12.31.2013-10K](https://www.sec.gov/Archives/edgar/data/1031296/000103129614000010/fe-12312013x10k.htm) — sec.gov · tier regulatory
- [FERC OKs sale of 11 FirstEnergy hydro plants; license transfers pending](https://www.renewableenergyworld.com/energy-business/energy-finance/ferc-oks-sale-of-11-firstenergy-hydro-plants-license-transfers-pending/) — renewableenergyworld.com · tier other
- [Accelerating the Energy Transition](https://www.lspower.com/wp-content/uploads/2021-LS-Power-Sustainability-Report.pdf) — lspower.com · tier other
- [FirstEnergy Completes Sale of Eleven Hydroelectric Power Stations to LS Power's Harbor Hydro Holdings, LLC - LS Power](https://www.lspower.com/news/firstenergy-completes-sale-eleven-hydroelectric-power-stations-ls-powers-harbor-hydro-holdings-llc/) — lspower.com · tier other
- [NYISO Operating Study Winter 2016-17](https://www.nyiso.com/documents/20142/3691300/Winter2016-17_Operating_Study_Approved_OC_12-15-2016_Report.pdf/35e965a1-a1cf-b81d-01ab-a32db1d8b317) — nyiso.com · tier other
- [Electricity storage: Location, location, location … and cost - U.S. Energy Information Administration (EIA)](https://www.eia.gov/todayinenergy/detail.php?id=6910) — eia.gov · tier regulatory

## Data quality

- Capacity figures vary by source and reporting scope: EIA lists 437.9 MW of nameplate capacity, the FERC project filing lists 451.8 MW of installed capacity, and REV Renewables and LS Power materials list 508 MW.

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