How big is CPV St Charles Energy Center?

CPV St Charles Energy Center has a reported capacity of 775.3 MW. Source: EIA Form 860.

What kind of plant is CPV St Charles Energy Center?

CPV St Charles Energy Center is a Natural Gas Fired Combined Cycle facility in Charles County, MD, participating in the PJM market.

Where is CPV St Charles Energy Center located?

CPV St Charles Energy Center is in Charles County, MD, inside the PJM balancing area.

Who operates CPV St Charles Energy Center?

CPV St Charles Energy Center is operated by CPV Maryland LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does CPV St Charles Energy Center generate?

CPV St Charles Energy Center reported 4,030.1 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.

How does CPV St Charles Energy Center compare to other plants?

By capacity, CPV St Charles Energy Center ranks #152 of 538 operating plants of the same technology nationally. It ranks #3 of 5 in MD.

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Natural Gas Fired Combined CyclePJM · Charles County

CPV St Charles Energy Center

CPV Maryland, LLC · Charles County · PJM

CPV St Charles Energy Center is a natural gas-fired power facility with 775.3 MW of EIA-reported nameplate capacity in Charles County, Maryland, registered as EIA Plant ID 56846. Osaka Gas is the current owner; CPV Maryland LLC is the registered plant entity or operator. The plant's generating configuration is natural-gas-fired 2 1 combined-cycle plant with two GE 7F 5-Series gas turbines and one D-11A steam turbine with associated generators.

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plant:plant-56846

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

Overview

Key fields

Reported capacity: 775.3 MW
EIA-reported nameplate capacity; other nameplate and seasonal ratings may differ.
Technology: Natural Gas Fired Combined Cycle
Primary generation technology.
Registry anchor: Plant 56846
CPV Maryland LLC · Charles County · PJM
Operating status: Operating
CPV St Charles Energy Center is operating.

Profile

Grid role: Dispatchable, responsive combined-cycle generation supporting regional reliability. CPV states that the plant sells capacity, energy, and ancillary services into PJM’s transmission-constrained SWMAAC zone and provides a backstop to renewable generation.
Physical build: 2×1 combined-cycle natural-gas facility with two GE 7F.05 gas turbines, one GE D-11A steam turbine with associated generators, and two duct-fired, triple-pressure-reheat heat-recovery steam generators. The operating record contains three generators totaling 775.3 MW.
Financing: Initial project financing closed on August 8, 2014.

Structured profile

Reported capacity: 775.3 MW
Natural Gas Fired Combined Cycle
Operating status: operating
CPV St Charles Energy Center is operating.
Location: Charles County
PJM
Operator: CPV Maryland LLC
Asset role

Units and generators

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

Generator	Capacity	Technology	Operation	Status
GTG1	223.6 MW 215.3 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	Feb 2017	Operating
GTG2	223.6 MW 213.8 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	Feb 2017	Operating
STGEN	328.1 MW 304.2 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CA	Feb 2017	Operating

Performance

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

Peer context

Technology capacity: 775.3 MW
National rank: #152
MD rank: #3

Monthly generation

Download CSV

Latest 12 months

4.03 TWh

Reported net generation

Latest report

Apr 2026

EIA-923 monthly filing

2025 capacity factor

69.5%

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

TAP139096

IN SERVICE · 69 kV

3.2 km

UNKNOWN123935

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

Project Debt Financial Close

Aug 8, 2014

Financial close for CPV St. Charles with $550 million senior secured credit facilities anchored by GE Energy Financial Services as primary lead arranger/bookrunner and administrative agent.

$550MCompetitive Power Ventures · Marubeni Corporation · Toyota Tsusho Corporation · GE Energy Financial Services · GE Capital Markets, Inc.

Competitive Power Ventures, Marubeni Corporation & Toyota Tsusho Close Financing of $775 Million CPV St. Charles Energy Center in Maryland

Transactions and agreements

Long-Term Equipment Services Agreement

Aug 8, 2014

GE agreed to support long-term availability of CPV St. Charles through 16-year contractual services agreement supporting the FlexEfficiency 60 combined-cycle equipment package.

16 yearsCompetitive Power Ventures · General Electric Company

Competitive Power Ventures, Marubeni Corporation & Toyota Tsusho Close Financing of $775 Million CPV St. Charles Energy Center in Maryland

Black Start Service Selection

Nov 2021

In November 2021, PJM selected CPV to provide Black Start capabilities via four 3.5 MW diesel generators (14 MW total) to restart one combustion turbine without external power; PSC Case 9437 filed January 14, 2022 for modification approval.

14 MW contractedCPV Maryland LLC · PJM Interconnection, LLC

CPV St. Charles Energy Center: NOTICE OF PRE-HEARING CONFERENCE AND OPPORTUNITY TO INTERVENE - Competitive Power Ventures

Market Offtake

Mar 14, 2017

The facility sells capacity, energy, and ancillary services into the transmission-constrained SWMAAC zone of the PJM wholesale market.

CPV St. Charles Energy Center · PJM market

Competitive Power Ventures, Marubeni Corporation, Toyota Tsusho & Osaka Gas USA Achieve Commercial Operation At 725 MW CPV St. Charles Energy Center Maryland - Competitive Power Ventures

Land and environmental record

Cooling-Water Source

Primarily treated/reclaimed effluent from Mattawoman Wastewater Treatment Facility; minimal groundwater for steam-cycle makeup

CPV states facility uses primarily recycled or grey water from Mattawoman; minimal groundwater used for steam-cycle makeup. Use reduces wastewater returned to Potomac River.

CPV St. Charles Energy Center - Competitive Power Ventures

Prior Land Use

Aug 30, 2017

51 acres of project site were a former sand and gravel mine

PPRP fact sheet identifies the former mine portion as part of the overall project site; same record describes surrounding area as largely vegetated and forested with commercial/industrial facilities nearby.

PPRP Fact Sheet – CPV St. Charles Natural Gas, Charles County PSC Case Number 9437

Project Site Area

Aug 30, 2017

76 acres within Piney Reach Business Park per PPRP 2017 record

PPRP fact sheet states project occupies 76 acres in Piney Reach Business Park including 51-acre former sand-and-gravel-mine portion; separate from CPV's 77-acre site description—both are source-specific site measurements.

PPRP Fact Sheet – CPV St. Charles Natural Gas, Charles County PSC Case Number 9437

PSD Major Permitting

Aug 30, 2017

Project triggered major Prevention of Significant Deterioration review for NOx, CO, particulate matter, PM10, and greenhouse gases; compliance expected if operating per licensing conditions

PPRP concludes facility expected to meet applicable state and federal emissions regulations if operated per licensing conditions; CPV uses best available control technology.

PPRP Fact Sheet – CPV St. Charles Natural Gas, Charles County PSC Case Number 9437

Surface-Water Appropriation Permit Status

2024

No surface-water appropriation permit identified for CPV St. Charles

Maryland DNR's surface-water and groundwater discussion expressly lists CPV St. Charles among facilities that do not have surface-water appropriation permits from Maryland; does not preclude other water-related approvals.

Surface Water and Groundwater (CH5.2) Oct 2024

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 / operatorFinancierContractorOrganization

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Dec 2008
Dec 2008
Certificate Of ApprovalCPV St. Cha...
CPV received a final non-appealable Certificate of Public Convenience and Necessity from the Maryland Public Service Commission and executed the county development agreement giving it the right to construct the facility.
Aug 8, 2014

CPV St Charles Energy Center

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CPV St Charles Energy Center

Ask about CPV St Charles Energy Center

Overview

Key fields

Profile

Structured profile

Units and generators

Performance

Peer context

Monthly generation

Grid and market context

Nearby substations

Commercial, land, and environmental record

Financing

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 CPV St Charles Energy Center

How big is CPV St Charles Energy Center?

What kind of plant is CPV St Charles Energy Center?

Where is CPV St Charles Energy Center located?

Who operates CPV St Charles Energy Center?

How much electricity does CPV St Charles Energy Center generate?

How does CPV St Charles Energy Center compare to other plants?

Co-located assets

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