How many nuclear power plants are in the US?

The US has 56 operating utility-scale nuclear power plants with 104 GW of capacity, according to the EIA's monthly survey of power plants.

What is the largest nuclear power plant in the US?

Vogtle in Burke County, Georgia is the largest, at 4,658 MW. It came online in 2024.

How many nuclear power plants were built in the US in 2025?

0 nuclear power plants came online in the US in 2025, with 0 MW of capacity.

Who is developing nuclear power plants in the US?

Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.

Nuclear power plants in the United States

The US has 56 operating nuclear power plants with 104 GW of capacity.

Operating56

Updated monthly. Last updated November 2026.

Under 250 MW250–999 MW1 GW and up

Updated monthly. Last updated November 2026.

The US had 55 nuclear power plants online in 2016 and 56 in 2026

2016’162017’172018’182019’192020’202021’212022’222023’232024’242025’252026’26

Nuclear power plants online at the end of each year. Source: EIA-860M, compiled by Cleanview.

The 10 largest nuclear power plants in the US

Operating, by capacity

#	Nuclear power plant	Location	Year online	Capacity
1	Vogtle	Burke County, Georgia	2024	4,658 MW
2	Palo Verde	Maricopa County, Arizona	1988	4,210 MW
3	Browns Ferry	Limestone County, Alabama	1977	3,854 MW
4	Peach Bottom	York County, Pennsylvania	1974	2,876 MW
5	South Texas Project	Matagorda County, Texas	1989	2,709 MW
6	Oconee	Oconee County, South Carolina	1974	2,667 MW
7	Watts Bar Nuclear Plant	Rhea County, Tennessee	2016	2,540 MW
8	TalenEnergy Susquehanna	Luzerne County, Pennsylvania	1985	2,532 MW
9	Braidwood Generation Station	Will County, Illinois	1988	2,450 MW
10	Byron Generating Station	Ogle County, Illinois	1987	2,450 MW

Nuclear power plants that came online most recently in the US

Newest first

#	Nuclear power plant	Location	Year online	Capacity
1	Vogtle	Burke County, Georgia	2024	4,658 MW
2	Watts Bar Nuclear Plant	Rhea County, Tennessee	2016	2,540 MW
3	Comanche Peak	Somervell County, Texas	1993	2,430 MW
4	Seabrook	Rockingham County, New Hampshire	1990	1,242 MW
5	Limerick	Montgomery County, Pennsylvania	1990	2,277 MW
6	South Texas Project	Matagorda County, Texas	1989	2,709 MW
7	Braidwood Generation Station	Will County, Illinois	1988	2,450 MW
8	Palo Verde	Maricopa County, Arizona	1988	4,210 MW
9	Fermi	Monroe County, Michigan	1988	1,217 MW
10	Perry	Lake County, Ohio	1987	1,312 MW

The developer behind each project is on paid plans. See plans

How Cleanview tracks nuclear power plants

Operating nuclear power plants come from the EIA's monthly survey of power plants. Planned projects come from the grid operators' interconnection queues. We research who is developing each one, since a queue lists a project company, not its owner.

Questions about nuclear power plants in the US

How many nuclear power plants are in the US?: The US has 56 operating utility-scale nuclear power plants with 104 GW of capacity, according to the EIA's monthly survey of power plants.
What is the largest nuclear power plant in the US?: Vogtle in Burke County, Georgia is the largest, at 4,658 MW. It came online in 2024.
How many nuclear power plants were built in the US in 2025?: 0 nuclear power plants came online in the US in 2025, with 0 MW of capacity.
Who is developing nuclear power plants in the US?: Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.