Keystone — Plant Summary
- EIA Plant ID
- 3136
- Capacity
- 1883.2 MW
- Primary Fuel
- Coal
- Technology
- Conventional Steam Coal, Petroleum Liquids
- Status
- Standby
- Location
- Armstrong, PA
- Operating Since
- 1967
- Generators
- 6
- Operator
- KeyCon Operating LLC
- Parent Company
- —
- Annual Generation
- 4,616,096 MWh
- Capacity Factor
- 27.9%
- Balancing Authority
- PJM Interconnection, LLC
- ISO/RTO
- PJM
- NERC Region
- RFC
Keystone
StandbyBit. CoalDistillate OilHybrid
Ranked #2 of 3 Bit. Coal plants in PA#14 of 66 nationally
1883.2 MW Conventional Steam Coal (1872 MW) + Petroleum Liquids (11 MW) standby in Armstrong, PA — PJM Interconnection, LLC
EIAWD
1,883.2 MW
Nameplate Capacity
6
Generators
units
Hybrid (2)
Technology
Conventional Steam Coal + Petroleum Liquids
1967
Operating Since
Location
Coordinates
40.6604, -79.3411
County
Armstrong, PA
Nearby Plants
- ArmstrongNatural Gas688 MW · 2.6 km
- Indiana University of PennsylvaniaNatural Gas24.4 MW · 16.2 km
- Homer City Generating StationNatural Gas4396 MW · 20.5 km
Ownership & Operator
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 | KeyCon Operating LLC | — | Reliant Energy |
| Owner(s) | Chief Keystone Power II, LLC, Chief Keystone Power LLC, Keystone Power LLC, Keystone Power Pass-Through Holders LLC, Montour LLC | — | — |
| Status | Standby | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
The Keystone Generating Station is a 1.71-gigawatt, coal power plant located on roughly 1,500 acres (610 ha) in Plumcreek Township, southeastern Armstrong County, Pennsylvania near Crooked Creek, just west of Shelocta, Pennsylvania.
Read more on WikipediaThe Keystone power plant, located in Armstrong County, Pennsylvania, has a total capacity of 1883.2 MW across six generators. The plant began operating in 1967 and is operated by KeyCon Operating LLC. While its primary fuel is listed as DFO (distillate fuel oil), the plant utilizes both conventional steam coal and petroleum liquids as energy sources, classifying it as a hybrid facility. Keystone ranks as the second-largest of six power plants in Pennsylvania and 3rd out of 60 nationally.
Keystone operates within the PJM Interconnection, LLC balancing authority and the RFC NERC region. The plant's latest annual generation was 4,616,096 MWh, achieving a capacity factor of 27.9%. News coverage of the plant includes 10 articles, with 6 focused on industry topics and 4 on regulatory matters. A Wikipedia extract is available for the plant.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
RFC
Balancing Authority
PJM Interconnection, LLC
Grid Voltage
500 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
755.8K MWh
Latest Month
4.6M MWh
Annual Generation
27.9%
Capacity Factor
Jan 2023 – Dec 2025
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Keystone Substation · 500 kV
Substation Distance
< 10 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
PJM
LMP Node
50781
Pricing Hub
WESTERN HUB
Node Source
EIA-860 direct report
News & Articles (10)Beta
Regulatory·permitting
DEP Invites Comments On Proposed Consent Decree Covering Wastewater Discharges To Continue Operation Of The Keystone And Conemaugh Coal-Fired Power Plants In Indiana And Armstrong Counties
The Department of Environmental Protection published notice in the January 10 PA Bulletin inviting comments on a proposed Consent Decree...
Department of Environmental Protection (regulator)Keystone (operator)
PA Environment Digest Blog·2 months ago
Regulatory·federal policy
Pa. electric customers will pay to keep an old power plant running under federal orders
Constellation Energy had planned to retire the Eddystone Generating Station in Delaware County at the end of May.
Constellation Energy (operator)
Pennsylvania Capital-Star·6 months ago
Industry·corporate
Amazon building data centers in Pennsylvania, marking largest private sector investment in state history
Amazon believes Pennsylvania holds the keystone to growing its empire. The tech company plans to spend $20 billion on data centers for cloud...
Amazon (developer)
6abc Philadelphia·9 months ago
Industry·corporate
Amazon to spend $20 billion on data centers in Pennsylvania, including one next to a nuclear power plant
Amazon said Monday that it will spend $20 billion on two data center complexes in Pennsylvania, including one it is building alongside a nuclear power plant.
Amazon (developer)
CNBC·9 months ago
Last updated 2026-03-14
View all 10 articles