Chalk Point Power
Prince Georges County
Overview
- 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
- Alternate name
- Chalk Point Generating Station
- Mapped facility footprint
- Mapped infrastructure footprint
Mapped infrastructure geometry associated with this asset.
- In service
- 1964-08
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.
- Interconnection
- Chalk Point substation
230 kV · Pepco
- Location
Generation and physical site
EIA plant 1571 · Inventory for Sep 2026.
Reported operating nameplate by technology
- Natural gas
- 1,774 MW
- Petroleum
- 51 MW
Generator records (8)
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| 3 | Natural Gas Steam Turbine | Operating | 659 | Unknown |
| 4 | Natural Gas Steam Turbine | Operating | 659 | Unknown |
| GT1 | Petroleum Liquids | Operating | 16 | Unknown |
| GT2 | Petroleum Liquids |
Related assets
Similar plants ranked by technology, capacity, and distance.
Units and generators
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 3 | 659 MW 595 MW summer | Natural Gas Steam Turbine ST | May 1975 | Operating |
| 4 | 659 MW 585.3 MW summer | Natural Gas Steam Turbine ST | Dec 1981 | Operating |
| GT1 | 16 MW 18 MW summer | Petroleum Liquids GT | Apr 1967 | Operating |
| GT2 | 35 MW 26 MW summer | Petroleum Liquids GT | Jun 1974 | Operating |
| GT3 | 103 MW 86 MW summer | |||
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 1,318 MW
- Natural Gas Steam Turbine
- National rank
- #15
- of 259 operating peers
- MD rank
- #1
- of 3 operating peers
Monthly generation
Download CSVLatest 12 months
2.81 TWh
Reported net generation
Latest report
Jul 2026
EIA-923 monthly filing
2025 capacity factor
10.7%
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.
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
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.
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.
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.
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.
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.
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
- Generator enters operationEIA-860
EIA-860 lists generator GT1 with this operating date.