How big is Liberty Electric Power Plant?

Liberty Electric Power Plant has a reported capacity of 614 MW. Source: EIA Form 860.

What kind of plant is Liberty Electric Power Plant?

Liberty Electric Power Plant is a Natural Gas Fired Combined Cycle facility in Delaware County, PA, participating in the PJM market.

Where is Liberty Electric Power Plant located?

Liberty Electric Power Plant is in Delaware County, PA, inside the PJM balancing area.

Who operates Liberty Electric Power Plant?

Liberty Electric Power Plant is operated by Liberty Electric Power LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Liberty Electric Power Plant generate?

Liberty Electric Power Plant reported 3,945.5 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.

How does Liberty Electric Power Plant compare to other plants?

By capacity, Liberty Electric Power Plant ranks #237 of 538 operating plants of the same technology nationally. It ranks #19 of 26 in PA.

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Natural Gas Fired Combined CyclePJM · Delaware County

Liberty Electric Power Plant

Delaware County · PJM

Liberty Electric Power Plant is a natural gas-fired power facility with 614 MW of EIA-reported nameplate capacity in Delaware County, Pennsylvania, registered as EIA Plant ID 55231. The plant began commercial operation in 2001. Its grid role is merchant combined-cycle generation supplying the PJM grid, designed for year-round continuous operation with utilization varying according to regional electricity demand and prices.

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Asset analyst

plant:plant-55231

Ask about Liberty Electric Power Plant

Investigate technology, capacity, output, price behavior, ownership, and related facilities using this profile plus current grid data.

Overview

Key fields

Reported capacity: 614 MW
EIA-reported nameplate capacity; other nameplate and seasonal ratings may differ.
Technology: Natural Gas Fired Combined Cycle
Primary generation technology.
Registry anchor: Plant 55231
Delaware County · PJM
Operating status: Operating

Infrastructure record

Operator: Liberty Electric Power LLC

Profile

Grid role: Merchant combined-cycle generation supplying the PJM grid, designed for year-round continuous operation with utilization varying according to regional electricity demand and prices.
Physical build: The exact EIA 55231 Liberty Electric Power Plant was built as a combined-cycle gas plant under a Duke/Fluor Daniel EPC contract. The installed generation equipment comprises two GE 7FA.03 gas-turbine generators, two Aalborg heat-recovery steam generators, one Toshiba steam turbine generator, two duct burners, and SCR emissions-control units. EIA/FERC records identify GTG1 and GTG2 at 186 MW each and STG at 242 MW.

Structured profile

Reported capacity: 614 MW
Natural Gas Fired Combined Cycle
Operating status: operating
Liberty Electric Power Plant is operating.
Location: Delaware County
PJM
Asset role: natural gas
PJM · Delaware County

Units and generators

Operating generator records and technology attributes reported through EIA-860.

Generator	Capacity	Technology	Operation	Status
GTG1	186 MW 169.1 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	May 2002	Operating
GTG2	186 MW 169.1 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	May 2002	Operating
STG	242 MW 223.8 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CA	May 2002	Operating

Performance

Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.

Peer context

Technology capacity: 614 MW
National rank: #237
PA rank: #19

Monthly generation

Download CSV

Latest 12 months

3.95 TWh

Reported net generation

Latest report

Apr 2026

EIA-923 monthly filing

2025 capacity factor

73.1%

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.

Nearby substations

HIFLD infrastructure inventory

UNKNOWN125184

IN SERVICE · 230 kV

0.1 km

TAP141122

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

Offtake Agreement Termination

Jul 2003

NEGT Energy Trading-Power, the counterparty to the Liberty generating station's tolling agreement, filed for bankruptcy in July 2003 and subsequently terminated the tolling agreement, ending the plant's contracted offtake arrangement.

NEGT Energy Trading-Power, L.P. · Liberty Electric Power, LLC

Source

Tolling-Termination Arbitration Award

Mar 30, 2005

Arbitration panel awarded Liberty $140 million plus interest in dispute arising from terminated tolling agreement; Gas Transmission Northwest increased recorded liability to $140 million for its guarantee.

$140MLiberty Electric Power, LLC · NEGT Energy Trading-Power, L.P. · Gas Transmission Northwest Corporation

Source

Land and environmental record

Air Permit

May 19, 2022

Permit No. Pennsylvania Title V/State Operating Permit No. 23-00082; DEP Authorization ID 1315568

Permit issued to LIBERTY ELEC POWER LLC/EDDYSTONE PLT at 1000 Industrial Highway, Eddystone, PA 19022-1529. Issued May 19, 2022; expires May 18, 2027.

1315568[23-00082]_Issued_v1.pdf

Cooling Water Requirement

May 19, 2022

Cooling-tower blowdown total dissolved/suspended solids limit of 4,425 ppm by weight

Pennsylvania DEP Title V permit requires the owner/operator to limit total dissolved and suspended solids in cooling-tower blowdown water to 4,425 ppm by weight or less, with testing and recordkeeping requirements.

1315568[23-00082]_Issued_v1.pdf

Drought Replacement Water

Jun 11, 2025

Merrill Creek Reservoir replacement-water source; 2.9 MGD equivalent consumptive-use storage; agreement through February 29, 2032

For critical hydrologic conditions, DRBC-approved replacement source is Merrill Creek Reservoir. Liberty Electric is a designated unit with stored replacement volume of 4.49 cfs (2.9 MGD); agreement term through February 29, 2032.

Source

Onsite Water Treatment

Jun 11, 2025

Reverse-osmosis demineralization plant with polishing pods and demineralized-water storage

DRBC docket identifies the plant's demineralization equipment as a reverse-osmosis filtration system, two polishing pods, and a demineralized-water storage tank for generator makeup water.

Source

Permitted Emission Limits

May 19, 2022

Facility emission limits: NOx 226.8; VOC 50.2; CO 507.4; PM/PM10 223.9; SO2 238.0; sulfuric acid mist 29.2

Combined facility limits in Pennsylvania DEP Title V permit, expressed in tons per year. Permit requires monthly and 12-month rolling emissions calculations.

1315568[23-00082]_Issued_v1.pdf

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 / operatorMarket / regulatorOrganizationFinancierOfftaker

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Jul 2000
Jul 2000
Construction GroundbreakingTwelvepole ...
A July 17, 2000 groundbreaking began construction of the Liberty Electric Power Project in Eddystone, Pennsylvania.
Aug 20, 2001

Liberty Electric Power Plant

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Liberty Electric Power Plant

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Overview

Key fields

Infrastructure record

Profile

Structured profile

Units and generators

Performance

Peer context

Monthly generation

Grid and market context

Nearby substations

Commercial, land, and environmental record

Transactions and agreements

Land and environmental record

Related parties and identifiers

Relationship graph

Timeline and sources

Project timeline

Parties and identifiers

Reporting portfolio

Sources

Common questions about Liberty Electric Power Plant

How big is Liberty Electric Power Plant?

What kind of plant is Liberty Electric Power Plant?

Where is Liberty Electric Power Plant located?

Who operates Liberty Electric Power Plant?

How much electricity does Liberty Electric Power Plant generate?

How does Liberty Electric Power Plant compare to other plants?

Co-located assets

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