How many power plants does Constellation Nuclear operate?

EIA-860M lists 13 operating plants against “Constellation Nuclear” for 2026-07, totalling 24 GW of nameplate capacity in 4 states.

Is Constellation Nuclear the owner of these plants?

EIA-860M names one reporting entity per generator. That entity operates the plant on the survey; ownership can sit with a parent, a partnership or a tax-equity structure that the form does not record.

Why are affiliates listed separately?

Because EIA files them separately. Rolling subsidiaries into a parent would need an ownership map EIA-860M does not publish, so this page does not invent one.

Constellation Nuclear power plants

Every generating plant EIA-860M files against Constellation Nuclear for 2026-07: 13 plants, 24 GW of nameplate capacity, across 4 states and 1 energy source.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Plants: 13
Nameplate capacity: 24 GW
States: 4; IL, MD, NY, PA
Energy sources: 1

Constellation Nuclear plants by energy source

Nuclear13 plants · 23,798 MW

Full list of Constellation Nuclear power plants

Power plants operated by Constellation Nuclear

Peach BottomNuclear	Constellation Nuclear	York	2,876.4	2	1974	Operating
Braidwood Generation StationNuclear	Constellation Nuclear	Will	2,449.8	2	1988	Operating
Byron Generating StationNuclear	Constellation Nuclear	Ogle	2,449.8	2	1985	Operating
LaSalle Generating StationNuclear	Constellation Nuclear	LaSalle	2,340	2	1984	Operating
LimerickNuclear	Constellation Nuclear	Montgomery	2,277	2	1986	Operating
Dresden Generating StationNuclear	Constellation Nuclear	Grundy	2,018.6	2	1970	Operating
Quad Cities Generating StationNuclear	Constellation Nuclear	Rock Island	2,018.6	2	1972	Operating
Nine Mile Point Nuclear StationNuclear	Constellation Nuclear	Oswego	1,901.1	2	1969	Operating
Calvert Cliffs Nuclear Power PlantNuclear	Constellation Nuclear	Calvert	1,850.4	2	1975	Operating
Clinton Power StationNuclear	Constellation Nuclear	DeWitt	1,138.3	1	1987	Operating
Crane Clean Energy CenterNuclear	Constellation Nuclear	Dauphin	980.8	1	1974	Out of service and NOT expected to return to service in next calendar year
James A FitzpatrickNuclear	Constellation Nuclear	Oswego	883.3	1	1976	Operating
R E Ginna Nuclear Power PlantNuclear	Constellation Nuclear	Wayne	614	1	1970	Operating

Constellation Nuclear: FAQ

How many power plants does Constellation Nuclear operate?: EIA-860M lists 13 operating plants against “Constellation Nuclear” for 2026-07, totalling 24 GW of nameplate capacity in 4 states.
Is Constellation Nuclear the owner of these plants?: EIA-860M names one reporting entity per generator. That entity operates the plant on the survey; ownership can sit with a parent, a partnership or a tax-equity structure that the form does not record.
Why are affiliates listed separately?: Because EIA files them separately. Rolling subsidiaries into a parent would need an ownership map EIA-860M does not publish, so this page does not invent one.