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.
EIA-reported nameplate capacity; other nameplate and seasonal ratings may differ.
Primary generation technology.
Warren County · PJM
230 kV
Hydroelectric Pumped Storage, Conventional Hydroelectric
Seneca Generation LLC is operating.
230 kV
PJM
PJM · Warren County
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 205.9 MW 225.4 MW summer | Hydroelectric Pumped Storage Water · PS | Jun 1970 | Operating |
| 2 | 205.9 MW 208.1 MW summer | Hydroelectric Pumped Storage Water · PS | Jun 1970 | Operating |
| 3 | 26.1 MW 29.9 MW summer | Conventional Hydroelectric Water · HY | Jun 1970 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
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Project milestones and public references behind the asset profile.
EIA-860 lists generator 1, generator 2, generator 3 with this operating date.
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
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.
LS Power Equity Advisors completed a $400 million refinancing through a private offering of 10-year senior secured notes to institutional investors.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Seneca Generation LLC has a reported capacity of 437.9 MW. Source: EIA Form 860.
Seneca Generation LLC is a Hydroelectric Pumped Storage, Conventional Hydroelectric facility in Warren County, PA, participating in the PJM market.
Seneca Generation LLC is in Warren County, PA, inside the PJM balancing area.
Seneca Generation LLC is operated by Seneca Generation LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Seneca Generation LLC reported -327.4 GWh over the twelve months to 2026-06. Figures are net generation as filed to EIA-923.
Seneca Generation LLC interconnects at Glade.
By capacity, Seneca Generation LLC ranks #16 of 39 operating plants of the same technology nationally. It ranks #2 of 2 in PA.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.
