How many nuclear power plants are in MISO?

MISO has 11 operating utility-scale nuclear power plants with 13 GW of capacity, according to the EIA's monthly survey of power plants.

What is the largest nuclear power plant in MISO?

Arkansas Nuclear One in Pope County, Arkansas is the largest, at 1,845 MW. It came online in 1980.

How many nuclear power plants were built in MISO in 2025?

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

Who is developing nuclear power plants in MISO?

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 MISO

MISO has 11 operating nuclear power plants with 13 GW of capacity.

Operating11

Updated monthly. Last updated November 2026.

Under 250 MW250–999 MW1 GW and up

Updated monthly. Last updated November 2026.

MISO had 11 nuclear power plants online in 2016 and 11 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 MISO

Operating, by capacity

#	Nuclear power plant	Location	Year online	Capacity
1	Arkansas Nuclear One	Pope County, Arkansas	1980	1,845 MW
2	Grand Gulf	Claiborne County, Mississippi	1985	1,440 MW
3	Point Beach Nuclear Plant	Manitowoc County, Wisconsin	1972	1,286 MW
4	Callaway	Callaway County, Missouri	1984	1,236 MW
5	Fermi	Monroe County, Michigan	1988	1,217 MW
6	Waterford 3	St Charles Parish, Louisiana	1985	1,200 MW
7	Prairie Island	Goodhue County, Minnesota	1974	1,186 MW
8	Clinton Power Station	DeWitt County, Illinois	1987	1,138 MW
9	River Bend	West Feliciana Parish, Louisiana	1986	1,036 MW
10	Palisades	Van Buren County, Michigan	1972	812 MW

Nuclear power plants that came online most recently in MISO

Newest first

#	Nuclear power plant	Location	Year online	Capacity
1	Fermi	Monroe County, Michigan	1988	1,217 MW
2	Clinton Power Station	DeWitt County, Illinois	1987	1,138 MW
3	River Bend	West Feliciana Parish, Louisiana	1986	1,036 MW
4	Waterford 3	St Charles Parish, Louisiana	1985	1,200 MW
5	Grand Gulf	Claiborne County, Mississippi	1985	1,440 MW
6	Callaway	Callaway County, Missouri	1984	1,236 MW
7	Arkansas Nuclear One	Pope County, Arkansas	1980	1,845 MW
8	Prairie Island	Goodhue County, Minnesota	1974	1,186 MW
9	Point Beach Nuclear Plant	Manitowoc County, Wisconsin	1972	1,286 MW
10	Palisades	Van Buren County, Michigan	1972	812 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 MISO

How many nuclear power plants are in MISO?: MISO has 11 operating utility-scale nuclear power plants with 13 GW of capacity, according to the EIA's monthly survey of power plants.
What is the largest nuclear power plant in MISO?: Arkansas Nuclear One in Pope County, Arkansas is the largest, at 1,845 MW. It came online in 1980.
How many nuclear power plants were built in MISO in 2025?: 0 nuclear power plants came online in MISO in 2025, with 0 MW of capacity.
Who is developing nuclear power plants in MISO?: 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.