Seneca Generation
Warren CountyPJM
Overview
- Reported capacity
- 437.9 MW
- EIA-reported nameplate capacity; other nameplate and seasonal ratings may differ.
- Technology
- Hydroelectric Pumped Storage, Conventional Hydroelectric
- Primary generation technology.
- Registry anchor
- Plant 8225
- Warren County · PJM
- Operating status
- Operating
- Grid connection
- Glade
- 230 kV
Infrastructure record
- Operator
- Seneca Generation LLC
- Alternate name
- Seneca Pumped Storage Generating Station
- Mapped facility footprint
- Mapped infrastructure footprint
Mapped infrastructure geometry associated with this asset.
- In service
- 1970-01
Profile
- Grid role
- Pumped-storage energy management and load leveling, including off-peak pumping and peak-period generation, with conventional hydroelectric generation capability.
- Grid connection
- Glade · 230 kV.
- Context
- 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.
- Physical build
- 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.
Structured profile
- Reported capacity
- 437.9 MW
Hydroelectric Pumped Storage, Conventional Hydroelectric
- Operating status
- operating
Seneca Generation LLC is operating.
- Interconnection
- Glade
230 kV
- Location
- Warren County
PJM
- Asset role
Generation and physical site
EIA plant 8225 · Inventory for Sep 2026.
Reported operating nameplate by technology
- Hydroelectric
- 437.9 MW
Generator records (3)
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| 1 | Hydroelectric Pumped Storage | Operating | 205.9 | Unknown |
| 2 | Hydroelectric Pumped Storage | Operating | 205.9 | Unknown |
| 3 | Conventional Hydroelectric | Operating | 26.1 | Unknown |
- Physical map location · OpenStreetMap
- 41.83888, -79.00558
- Filed location · EIA
- 41.83890, -79.00560
Sources and observation dates
Related assets
Similar plants ranked by technology, capacity, and distance.
Units and generators
Current 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 PS | Jun 1970 | Operating |
| 2 | 205.9 MW 208.1 MW summer | Hydroelectric Pumped Storage PS | Jun 1970 | Operating |
| 3 | 26.1 MW 29.9 MW summer | Conventional Hydroelectric HY | Jun 1970 | Operating |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 411.8 MW
- Hydroelectric Pumped Storage
- National rank
- #16
- of 39 operating peers
- PA rank
- #2
- of 2 operating peers
Monthly generation
Download CSVLatest 12 months
-329 GWh
Reported net generation
Latest report
Jul 2026
EIA-923 monthly filing
2025 capacity factor
—
Using current reported nameplate capacity
Grid and market context
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Commercial, land, and environmental record
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Transactions and agreements
Ownership Contribution
Jul 20, 2021
Seneca Hydro (indirect owner of Seneca Generation Facility via Harbor Hydro Intermediate Holdings) was contributed to Rev Renewables, LLC on July 20, 2021 as part of LS Power's portfolio contribution transaction. SEC filing reports aggregate contribution-transaction cost for multiple facilities but does not allocate total to Seneca, so no amount assigned.
Harbor Hydro Intermediate Holdings, LLC · Rev Renewables, LLC · LS Power Equity Partners II, LP
Proposed Reactive-Service Rate Settlement
Jul 11, 2023
Seneca Generation proposed an annual total revenue requirement of $1,485,000 for reactive capability under PJM Schedule 2 in an offer of settlement. The filing describes the Seneca facility as a 513 MW pumped-hydroelectric storage facility in Warren, Pennsylvania. This was a proposed reactive-service revenue requirement, not a PPA, tolling agreement, or fixed-term offtake contract.
$1.5M513 MW contractedSeneca Generation, LLC · PJMSettlement
Land and environmental record
Environmental Review Milestone
Nov 3, 2014
FERC environmental assessment found no significant environmental effect with protective measures
FERC staff reviewed the 451.8 MW Kinzua Pumped Storage Project environmental assessment and concluded that issuing a new license with appropriate environmental protective measures would not be a major federal action significantly affecting the human environment.
Existing Project Land
May 6, 2014
226.7 acres of federal land
The existing Kinzua Pumped Storage Project occupies 226.7 acres of federal land: 212.1 acres administered by the U.S. Forest Service and 14.6 acres administered by the U.S. Army Corps of Engineers.
Federal Land Administration
May 6, 2014
14.6 acres administered by the U.S. Army Corps of Engineers
Existing project federal land includes 14.6 acres administered by the U.S. Army Corps of Engineers.
Federal Land Administration
May 6, 2014
212.1 acres administered by the U.S. Forest Service
Existing project federal land includes 212.1 acres administered by the U.S. Forest Service.
Industrial Wastewater Permit
Dec 1, 2023
NPDES Permit PA0005045
Pennsylvania DEP issued industrial wastewater NPDES Permit PA0005045 for the Seneca Generating Station at 500 Powerhouse Drive, Warren, Pennsylvania. The permit became effective December 1, 2023 and expires November 30, 2028.
Stormwater Management
Dec 1, 2023
Stormwater authorization for Outfalls 005, 006, 007, 008, and 009
PA0005045 authorizes non-polluting stormwater discharges from the facility through Outfalls 005 through 009, covering the western facility area, laydown yards, cliff drainage, groundwater/stormwater, and the powerhouse roof and switchyard.
Water Source And Project Facilities
Allegheny River and Allegheny Reservoir/Kinzua Dam intake
The project is located on the Allegheny River and includes an intake structure at the Corps' Kinzua Dam on the Allegheny Reservoir, plus an upper reservoir and associated water-conveyance facilities.
Related parties and identifiers
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Relationship graph
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AssetOwner / operatorFinancier
Timeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- Generators enter operationEIA-860
EIA-860 lists generator 1, generator 2, generator 3 with this operating date.