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437.9 MW Conventional Hydroelectric (26 MW) + Hydroelectric Pumped Storage (412 MW) operating in Warren, PA — PJM Interconnection, LLC
437.9 MW
Nameplate Capacity
3
Generators
units
Hybrid (2)
Technology
Conventional Hydroelectric + Hydroelectric Pumped Storage
1970
Operating Since
Coordinates
41.8389, -79.0056
County
Warren, PA
Nearby Plants
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Seneca Generation LLC | Seneca Generation | — |
| Owner(s) | Seneca Generation LLC | LS Power Development | — |
| Status | Operating | operating | — |
The Seneca Pumped Storage Generating Station is a hydroelectric power plant using pumped storage of water to generate electric power. It is located near Warren, Pennsylvania in Warren County.
Read more on WikipediaSeneca Generation LLC, located in Warren County, Pennsylvania, is a 437.9 MW hybrid hydroelectric and pumped storage facility. The plant, which began operating in 1970, utilizes water as its primary fuel source. It is owned by LS Power Development and operated by Seneca Generation LLC. The facility consists of three generators employing conventional hydroelectric and pumped storage technologies.
Seneca Generation LLC operates within the PJM Interconnection, LLC balancing authority and the RFC NERC region. It is ranked as the second largest of four hydroelectric plants in Pennsylvania and the 54th largest of 194 hydroelectric plants nationally.
Generated from EIA, GEM, and public data sources
ISO/RTO
PJM
Market
ISO/RTO Member
NERC Region
RFC
Balancing Authority
PJM Interconnection, LLC (PJM)
Grid Voltage
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
−27.7K MWh
Net Charging
-353.3K MWh
Annual Net Energy
-9.2%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $1.0B
Point of Interconnection
Nearest Substation
Glade Substation · 230 kV
Substation Distance
< 10 km
Operator
Penelec
Coord Source
OSM spatial
Market Position
ISO/RTO Market
PJM
LMP Node
SENECA 13KV GEN1
Pricing Hub
WESTERN HUB
Node Source
EIA-860 direct report
Last updated 2026-03-26
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