Key reports 830.6 MW natural gas of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.

What kind of plant is Key?

Key is a Natural Gas Fired Combined Cycle facility in Prince Georges County, MD, participating in the PJM market.

Where is Key located?

Key is in Prince Georges County, MD, inside the PJM balancing area.

Key is operated by Parkway Generation Keys Energy Center LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Key generate?

Key reported 4,386.2 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.

Where does Key connect to the grid?

Key interconnects at On-site 500 kV substation/switchyard (name not specified), on the Potomac Electric Power Company (Pepco) system.

How does Key compare to other plants?

By capacity, Key ranks #135 of 540 operating plants of the same technology nationally. It ranks #2 of 5 in MD.

Key — 831 MW gas plant, Prince Georges County, MD

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Key — 831 MW gas plant, Prince Georges County, MD · Ask the Grid

Generation and physical site

EIA plant 60302 · Inventory for Sep 2026.

Reported operating nameplate by technology

Natural gas: 830.6 MW

Operating generators only. Battery power is in MW; stored energy is in MWh. These ratings do not establish a shared export limit.

Generator records (3)

EIA generator status and nameplate capacity for Key
Generator	Technology	Status	Power (MW)	Energy (MWh)
10	Natural Gas Fired Combined Cycle	Operating	359.6	Unknown
11	Natural Gas Fired Combined Cycle	Operating	235.5	Unknown
12	Natural Gas Fired Combined Cycle	Operating	235.5	Unknown

Physical map location · OpenStreetMap: 38.70317, -76.82700
Filed location · EIA: 38.69552, -76.82779

Sources and observation dates

Inventory source: EIA-860M workbook (preliminary)
EIA reporting month: Sep 2026
EIA retrieved: Oct 24, 2026
OSM extract: Oct 9, 2026
OSM last mapped edit: Aug 12, 2022
Map prepared: Oct 24, 2026
Field verification: Not reported

Reporting month describes the inventory. Retrieval and map preparation describe processing; an OSM edit does not establish an in-service date.

EIA source inventory

Units and generators

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

Generator	Capacity	Technology	Operation	Status
10	359.6 MW 766.1 MW summer	Natural Gas Fired Combined Cycle CA	Jul 2018	Operating
11	235.5 MW	Natural Gas Fired Combined Cycle CT	Jul 2018	Operating
12	235.5 MW	Natural Gas Fired Combined Cycle CT	Jul 2018	Operating

Commercial, land, and environmental record

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

Land and environmental record

Emissions Controls

2018

Selective catalytic reduction and oxidation catalyst systems

The Title V application identifies SCR and oxidation-catalyst controls for emissions from each combustion turbine and duct burner associated with the HRSGs.

AIR AND RADIATION ADMINISTRATION DRAFT TITLE V - PART 70 OPERATING PERMIT CKET # 24-033-2737 DO : Parkway Generation Keys

Environmental Compliance Settlement

Feb 1, 2022

$125,000 civil penalty plus $75,000 supplemental environmental project payment

MDE's 2022 enforcement announcement states that a settlement of alleged air-pollution violations required PSEG Keys Energy Center LLC to pay a $125,000 civil penalty and provide $75,000 to a Patuxent Riverkeeper-led environmental program. Allegations included particulate exceedances in late September through early December 2019, a carbon-monoxide exceedance during a July 2020 startup, and failure to perform a required boiler-optimization analysis. MDE stated that corrective physical and operational changes had been made.

Source

Prior Land Use

Sand and gravel mining operation

The project was developed on a 180-plus-acre parcel previously used for a sand and gravel mining operation.

Keys Energy Center

Wetland Conversion

Dec 4, 2014

Approximately 0.41 acres PSS and 9.32 acres PFO converted to PEM along natural-gas-line easement

The proposed gas-line permanent easement through the existing utility corridor would convert palustrine scrub-shrub and forested wetlands to annually mowed emergent wetlands: 0.41 acres PSS and 9.32 acres PFO converted to PEM.

PN14-68 (Keys Energy Center) - Charles and Prince Georges Counties > Baltimore District > Public Notice View

Wetland Impact Permanent

Dec 4, 2014

Approximately 1.91 acres PEM and 0.02 acres PFO

The Corps public notice described permanent wetland fill for the plant and access culvert, resulting in permanent impacts to approximately 1.91 acres of palustrine emergent (PEM) wetland and 0.02 acres of palustrine forested nontidal (PFO) wetlands.

PN14-68 (Keys Energy Center) - Charles and Prince Georges Counties > Baltimore District > Public Notice View

Mapped facility footprint

Overview

Overview

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Infrastructure record

Profile

Structured profile

Generation and physical site

Reported operating nameplate by technology

Related assets

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Units and generators

Performance

Peer context

Monthly generation

Grid and market context

Market registration

Nearby substations

Commercial, land, and environmental record

Land and environmental record

Related parties and identifiers

Relationship graph

Parties and identifiers

Reporting portfolio

Timeline and sources

Project timeline

Sources

Common questions about Key

How big is Key?