How big is South Field Energy?

South Field Energy has a reported capacity of 1,210.4 MW. Source: EIA Form 860.

What kind of plant is South Field Energy?

South Field Energy is a Natural Gas Fired Combined Cycle facility in Columbiana County, OH, participating in the PJM market.

Where is South Field Energy located?

South Field Energy is in Columbiana County, OH, inside the PJM balancing area.

Who operates South Field Energy?

South Field Energy is operated by South Field Energy, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does South Field Energy generate?

South Field Energy reported 7,869.6 GWh over the twelve months to 2026-06. Figures are net generation as filed to EIA-923.

Where does South Field Energy connect to the grid?

South Field Energy interconnects at Wellsville Substation, on the American Transmission Systems, Incorporated (ATSI) system.

How does South Field Energy compare to other plants?

By capacity, South Field Energy ranks #60 of 538 operating plants of the same technology nationally. It ranks #3 of 14 in OH.

South Field Energy — 1,210 MW gas plant, OH

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South Field Energy — 1,210 MW gas plant, OH · Ask the Grid

Overview

Reported capacity: 1,210.4 MW
EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ.
Technology: Natural Gas Fired Combined Cycle
Primary generation technology.
Registry anchor: Plant 60356
South Field Energy, LLC · Columbiana County · PJM
Operating status: Operating
South Field Energy is operating.
Grid connection: Wellsville Substation
345 kV · American Transmission Systems, Incorporated (ATSI)

Profile

Grid role: Baseload power generation serving PJM
Grid connection: Wellsville Substation · 345 kV · American Transmission Systems, Incorporated (ATSI).
Physical build: Bechtel completed the 1,182 MW South Field Energy combined-cycle facility. The plant comprises two combined-cycle units; each unit has one GE 7HA.02 gas turbine and H65 generator, one STF-D650 steam turbine and H53 generator, and one heat-recovery steam generator. Thus, the installed scope is 2 gas turbines, 2 gas-turbine generators, 2 steam turbines, 2 steam-turbine generators, and 2 HRSGs.

Structured profile

Reported capacity: 1,210.4 MW
Natural Gas Fired Combined Cycle
Operating status: operating
South Field Energy is operating.
Interconnection: Wellsville Substation
345 kV · American Transmission Systems, Incorporated (ATSI)
Location: Columbiana County
PJM
Operator: South Field Energy, LLC

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Compare with this plant

Tenaska Westmoreland Generating Station

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Units and generators

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

Generator	Capacity	Technology	Operation	Status
SFCT1	344.4 MW 344.4 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	Aug 2021	Operating
SFCT2	344.4 MW 344.4 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	Oct 2021	Operating
SFST1	260.8 MW 260.8 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CA	Aug 2021	Operating
SFST2	260.8 MW 260.8 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CA	Oct 2021	Operating

Performance

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

Peer context

Technology capacity: 1,210.4 MW; Natural Gas Fired Combined Cycle
National rank: #60; of 538 operating peers
OH rank: #3; of 14 operating peers

Monthly generation

Download CSV

Latest 12 months

7.87 TWh

Reported net generation

Latest report

Jun 2026

EIA-923 monthly filing

2025 capacity factor

68.1%

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

NORTH WELLSVILLE

IN SERVICE

4.1 km

EIGHTEENTH STREET

Commercial, land, and environmental record

Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.

Financing

Financial Close

Aug 23, 2018

Financial close for construction of 1,182 MW combined-cycle facility. Financing included senior secured credit and other credit facilities from multiple commercial banks.

$1.3B1,182 MW contractedSouth Field Energy Partners LLC · Advanced Power · Kyushu Electric Power Co., Inc. · NH-Amundi Asset Management · PIA Investment Management Co., Ltd. · RS Global Capital Investment LLC · Development Bank of Japan Inc. · Shikoku Electric Power Co., Inc. · Bechtel Development Company, Inc. · Crédit Agricole Corporate and Investment Bank · CIT Group Inc. · GE Energy Financial Services · NH Investment & Securities Co., Ltd.

Advanced Power Closes Financing of $1.3 Billion Electric Generating Facility Near Wellsville, Columbiana County, Ohio » South Field Energy

Transactions and agreements

EPC Award

Aug 23, 2018

Bechtel selected for engineering, procurement, and construction. Completed in 37 months; no contract value disclosed.

1,182 MW contractedSouth Field Energy Partners LLC · Bechtel Development Company, Inc.

Advanced Power Closes Financing of $1.3 Billion Electric Generating Facility Near Wellsville, Columbiana County, Ohio » South Field Energy

Equipment Service Agreement

Sep 13, 2018

GE Power selected to provide long-term services for gas turbines, steam turbines, and heat recovery equipment. No amount or duration disclosed.

South Field Energy Partners LLC · General Electric

Advanced Power Selects GE's Industry Leading HA Gas Turbine Technology for South Field Energy in Wellsville, Ohio | GE News

Minority Equity Sale

Jul 2019

Advanced Power sold 10% membership interest in South Field Energy Partners LLC (100% indirect owner of South Field Energy LLC) to Chugoku America Power America, LLC. Consideration not disclosed.

Advanced Power · Chugoku America Power America, LLC · The Chugoku Electric Power Co., Inc. · South Field Energy Partners LLC

Advanced Power sells 10% interest in South Field Energy project in Ohio to Chugoku

Minority Equity Sale

May 2019

Advanced Power sold 15% membership interest in South Field Energy Partners LLC to ENEOS Power USA LLC. Consideration not disclosed.

Advanced Power · ENEOS Power USA LLC · ENEOS HD · South Field Energy Partners LLC

Advanced Power sells 15% interest in South Field Energy project in Ohio to JXTG

Minority Equity Acquisition

Jul 2026

SVP managed funds agreed to acquire minority equity interest as part of partnership with EverGen Power. Financial terms not disclosed.

Strategic Value Partners, LLC · EverGen Power · South Field Energy Partners LLC

Strategic Value Partners to Acquire Minority Stake in South Field Energy - SVP Strategic Value Partners

Land and environmental record

Environmental-Compliance Milestone

Mar 31, 2022

EPA-approved alternative fuel-flowmeter calibration procedure

EPA approved South Field Energy petition to use Emerson MMI Transfer Standard Method for Coriolis natural-gas fuel flowmeters on units 1 and 2.

Source

Facility Site Acreage

Less than 20 acres

Owner states the generation facility occupies fewer than 20 acres.

About Us » South Field Energy

NPDES Wastewater Permit

Jul 1, 2023

Permit No. 3IN00394*BD; Application OH0147559

Ohio EPA NPDES permit for South Field Energy LLC. Action date May 22, 2023; effective July 1, 2023; expiration June 30, 2028.

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Parcel Acreage

May 15, 2019

150-acre parcel

Facility footprint is part of 150-acre parcel near Wellsville, approximately 3 miles from village.

About Us » South Field Energy

Permitted Discharge Flow

Jul 1, 2023

0.89 MGD design flow

2023 NPDES permit bases effluent loadings on average design flow of 0.89 million gallons per day.

Microsoft Word - 602c5980-dd39-4781-beef-33388580e140

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

Drag organizations to explore the network. Select a node to pin its details and available page link.

AssetProject companyOwner / operatorFinancierContractorOrganizationEquipment

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Aug 23, 2018
Aug 23, 2018
Project Financing CloseAdvanced Po...
Advanced Power announced financial close on $1.3 billion of financing for construction of the 1,182-MW facility. The financing included senior secured credit and other credit facilities from Crédit Agricole CIB, CIT Group, GE Energy Financial Services, NH Investment & Securities, and 10 other commercial banks.
Sep 13, 2018

South Field Energy