How big is Chalk Point Power?

Chalk Point Power has a reported capacity of 1,825 MW. Source: EIA Form 860.

What kind of plant is Chalk Point Power?

Chalk Point Power is a Natural Gas Fired Combustion Turbine, Natural Gas Steam Turbine, Petroleum Liquids facility in Prince Georges County, MD, participating in the PJM market.

Where is Chalk Point Power located?

Chalk Point Power is in Prince Georges County, MD, inside the PJM balancing area.

Who operates Chalk Point Power?

Chalk Point Power is operated by Chalk Point Power, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

When did Chalk Point Power start operating?

Chalk Point Power reports a commercial operation date of 1967. Current status: operating. Source: EIA Form 860.

How much electricity does Chalk Point Power generate?

Chalk Point Power reported 2,380.1 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.

Where does Chalk Point Power connect to the grid?

Chalk Point Power interconnects at Chalk Point substation, on the Pepco system.

How does Chalk Point Power compare to other plants?

By capacity, Chalk Point Power ranks #14 of 257 operating plants of the same technology nationally. It ranks #1 of 3 in MD.

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Natural Gas Fired Combustion Turbine, Natural Gas Steam Turbine, Petroleum LiquidsPJM · Prince Georges County

Chalk Point Power

Prince Georges County · PJM

Chalk Point Power is a natural gas-fired power facility with 1,825 MW of EIA-reported nameplate capacity in Prince Georges County, Maryland, registered as EIA Plant ID 1571. In the first quarter of 2024, those units received approximately $20 million of PJM uplift credits, representing 26% of total PJM uplift. Terrapin Power, LLC, a Rockland Capital subsidiary acquired a 100% interest in the plant from Osprey Energy Holdings, LLC in 2024.

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plant:plant-1571

Ask about Chalk Point Power

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

Overview

Key fields

Reported capacity: 1,825 MW
EIA-reported nameplate capacity; other nameplate and seasonal ratings may differ.
Technology: Natural Gas Fired Combustion Turbine, Natural Gas Steam Turbine, Petroleum Liquids
Primary generation technology.
Registry anchor: Plant 1571
Prince Georges County · PJM
Operating status: Operating
Grid connection: Chalk Point substation
230 kV · Pepco
Commercial operation: 1967
Best-supported operating milestone.

Infrastructure record

Operator: Chalk Point Power, LLC

Profile

Operating status: Chalk Point Power is currently operating; a closure or retirement is listed for June 1, 2021.
Grid role: Dispatchable thermal generation serving the PJM Baltimore/Washington BGE-Pepco area, which PJM market-monitoring material identifies as a constrained and reliability-significant location.
Grid connection: Chalk Point substation · 230 kV · Pepco.
Context: C., BGE/Pepco area. In the first quarter of 2024, those units received approximately $20 million of PJM uplift credits, representing 26% of total PJM uplift.
Physical build

Structured profile

Reported capacity: 1,825 MW
Natural Gas Fired Combustion Turbine, Natural Gas Steam Turbine, Petroleum Liquids
Commercial operation: 1967
Operating status: operating
Chalk Point Power is currently operating; a closure or retirement is listed for June 1, 2021.
Retirement: June 1, 2021
Chalk Point Power is currently operating; a closure or retirement is listed for June 1, 2021.

Units and generators

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

Generator	Capacity	Technology	Operation	Status
3	659 MW 595 MW summer	Natural Gas Steam Turbine Natural Gas · ST	May 1975	Operating
4	659 MW 585.3 MW summer	Natural Gas Steam Turbine Natural Gas · ST	Dec 1981	Operating
GT1	16 MW 18 MW summer	Petroleum Liquids Disillate Fuel Oil · GT	Apr 1967	Operating
GT2	35 MW 26 MW summer

Performance

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

Peer context

Technology capacity: 1,318 MW
National rank: #14
MD rank: #1

Monthly generation

Download CSV

Latest 12 months

2.38 TWh

Reported net generation

Latest report

Apr 2026

EIA-923 monthly filing

2025 capacity factor

10.7%

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

UNKNOWN133902

IN SERVICE

0.5 km

UNKNOWN133903

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

Lender-Directed Acquisition

Dec 2023

FERC approved Olympus Power, LLC acquisition of 100% of Chalk Point Power, LLC on December 18, 2023. Transaction resulted from agreement between Lanyard Power, LLC and its lenders to avoid foreclosure. No consideration or lender identities disclosed.

Olympus Power, LLC · Lanyard Power, LLC · Chalk Point Power, LLC

Comments of the Independent Market Monitor for PJM

EPC Agreement

Jul 30, 2007

Stone & Webster, Inc. contracted for engineering, procurement and construction of air-quality-control systems at Chalk Point Generating Station (Units E1 and E2 FGD systems) and other Maryland facilities. Multi-facility contract; no Chalk Point-specific price allocated.

Mirant Chalk Point, LLC · Mirant Mid-Atlantic, LLC · Stone & Webster, Inc.

Source

Land and environmental record

Environmental Enforcement

Oct 7, 2015

EPA CERCLA administrative enforcement docket CERC-03-2014-0214 closed with payment received

EPA administrative docket identifies NRG Chalk Point LLC CERCLA penalty proceeding, complaint date June 16, 2014, closed October 7, 2015 with payment received.

All Dockets by Case Number| EPA Administrative Enforcement Dockets | US EPA

Environmental-Compliance Milestone

Aug 29, 2016

2016 water-discharge settlement: $1,000,000 civil penalty, $1,000,000 supplemental environmental projects, ~$5 million wastewater-treatment upgrades

Maryland settlement for nitrogen discharge limit violations 2010-2013. Chalk Point exceeded annual nitrogen limits post-scrubber installation. Included $1M penalty, $1M environmental projects, $5M technology upgrades, and added wastewater monitoring.

Source

Groundwater Use

2009

Groundwater withdrawals from deeper Patuxent Aquifer began in 2009 for boiler feedwater

Maryland water-use report identifies 2009 start of groundwater withdrawal from Patuxent Aquifer for boiler feedwater in coal-fired units. Note: Coal units retired June 2021.

Surface Water and Groundwater (CH5.2) Oct 2024

Stormwater Permit And Compliance

Apr 20, 2021

Industrial stormwater approval 12SR3417A; NPDES permit MD002658; active site with corrective actions recommended

Maryland inspection record for GenOn Chalk Point Generation Station identifies stormwater approval 12SR3417A, NPDES MD002658, active status, and corrective-action recommendations from April 20, 2021 inspection.

Maryland Department of Environment

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 / operatorContractor

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Aug 1964
Aug 1964
Generator enters operationEIA-860
EIA-860 lists generator ST1 with this operating date.
Mar 1965
Mar 1965
Generator enters operation

Ask about Chalk Point Power

Ask about Chalk Point Power

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 Chalk Point Power

How big is Chalk Point Power?

What kind of plant is Chalk Point Power?

Where is Chalk Point Power located?

Who operates Chalk Point Power?

When did Chalk Point Power start operating?

How much electricity does Chalk Point Power generate?

Where does Chalk Point Power connect to the grid?

How does Chalk Point Power compare to other plants?

Co-located assets

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