Power plants in Maryland

249 operating power projects with 13,589 MW of nameplate capacity, from EIA-860M for August 2026.

Projects

249

Nameplate capacity

13,589 MW

Counties with a plant

24

Operators

132

Power markets: PJM prices

Capacity by fuel

MW is nameplate from operating generators and batteries. Plant counts use each project's primary fuel, so a coal and gas plant counts once.

Largest power plants in Maryland

Top 50 · All 249 plants
PlantPrimary fuelMWCountyOperator
Calvert Cliffs Nuclear Power PlantNuclear1,850CalvertConstellation Nuclear
Chalk Point PowerNatural gas1,825Prince GeorgesChalk Point Power, LLC
Brandon ShoresCoal1,370Anne ArundelBrandon Shores LLC
Wildcat Point Generation FacilityNatural gas1,114CecilOld Dominion Electric Coop
KeyNatural gas831Prince GeorgesParkway Generation Keys Energy Center LLC
Essential Power Rock Springs LLCNatural gas796CecilEssential Power Operating Services LLC
CPV St Charles Energy CenterNatural gas775CharlesCPV Maryland LLC
Herbert A WagnerOil774Anne ArundelH.A. Wagner LLC
ConowingoHydro531HarfordConstellation Power, Inc
PerrymanNatural gas and oil492HarfordConstellation Power Source Generation, LLC

Maryland power plants by fuel

Newest plants in Maryland

Ordered by the month the first generator began operating.

Counties with the most capacity

Largest operators in Maryland

Grouped by EIA operator name. Parent companies are not merged.

All 249 plants in Maryland, by county

Allegany County 2 plants

Anne Arundel County 12 plants

Baltimore City 9 plants

Baltimore County 23 plants

Calvert County 2 plants

Caroline County 2 plants

Carroll County 3 plants

Cecil County 9 plants

Charles County 5 plants

Dorchester County 8 plants

Frederick County 9 plants

Harford County 19 plants

Kent County 6 plants

Montgomery County 15 plants

Prince Georges County 31 plants

Prince Geroges County 1 plant

Queen Annes County 9 plants

Somerset County 5 plants

Talbot County 3 plants

Washington County 15 plants

Wicomico County 9 plants

Worcester County 4 plants

Questions about power plants in Maryland

How many power plants are in Maryland?

EIA-860M for August 2026 lists 249 operating power projects in Maryland, with 13,589 MW of nameplate capacity including batteries.

What is the largest power plant in Maryland?

Calvert Cliffs Nuclear Power Plant in Calvert County, with 1,850.4 MW of nameplate capacity. The next largest is Chalk Point Power, with 1,825 MW.

How much of Maryland's capacity is nuclear?

1,850 MW, about 14% of nameplate capacity. 1 project have nuclear as their primary fuel.

Source: EIA-860M August 2026, published 2026-09-24. Page updated 2026-10-04. Data sources