How big is Tenaska Westmoreland Generating Station?

Tenaska Westmoreland Generating Station has a reported capacity of 1,134 MW. Source: EIA Form 860M.

What kind of plant is Tenaska Westmoreland Generating Station?

Tenaska Westmoreland Generating Station is a Natural Gas Fired Combined Cycle facility in Westmoreland County, PA, participating in the PJM market.

Where is Tenaska Westmoreland Generating Station located?

Tenaska Westmoreland Generating Station is in Westmoreland County, PA, inside the PJM balancing area.

Who operates Tenaska Westmoreland Generating Station?

Tenaska Westmoreland Generating Station is operated by Tenaska Pennsylvania Partners, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Tenaska Westmoreland Generating Station generate?

Tenaska Westmoreland Generating Station reported 6,656.5 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.

How does Tenaska Westmoreland Generating Station compare to other plants?

By capacity, Tenaska Westmoreland Generating Station ranks #73 of 538 operating plants of the same technology nationally. It ranks #6 of 26 in PA.

Tenaska Westmoreland Generating Station — 1,134 MW gas plant

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Tenaska Westmoreland Generating Station — 1,134 MW gas plant · Ask the Grid

Overview

Nameplate capacity: 1134 MW
Canonical EIA plant baseline.
Registry anchor: Plant 60464
plant-60464

Structured profile

Technology: Natural Gas Fired Combined Cycle
Operator: Tenaska Operations, Inc.

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Units and generators

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

Generator	Capacity	Technology	Operation	Status
CTG1	370 MW 288 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	Dec 2018	Operating
CTG2	370 MW 288 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	Dec 2018	Operating
STG1	394 MW 371 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CA	Dec 2018	Operating

Performance

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

Peer context

Technology capacity: 1,134 MW
National rank: #73
PA rank: #6

Monthly generation

Download CSV

Latest 12 months

6.66 TWh

Reported net generation

Latest report

Apr 2026

EIA-923 monthly filing

2025 capacity factor

63.4%

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.

Nearby substations

HIFLD infrastructure inventory

UNKNOWN171934

IN SERVICE

0.1 km

UNKNOWN171935

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

Commercial Operation

Dec 2018

Tenaska Westmoreland Generating Station entered commercial operation. The facility began selling power into the PJM Interconnection.

Tenaska Pennsylvania Partners, LLC · PJM Interconnection, LLC

tenaska.com

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 / operatorContractorEquipmentFinancierMarket / regulator

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Apr 19, 2016
Apr 19, 2016
Commercial Financing Closedprnewswire....
Tenaska closed approximately $780 million in commercial financing for Tenaska Westmoreland. MUFG Union Bank, N.A., BNP Paribas, Citigroup Global Markets, and Industrial and Commercial Bank of China, Limited led the bank group. The financing was supported by PJM's forward capacity market and five-year revenue hedging.
Dec 2018

Tenaska Westmoreland Generating Station