Fleet by NRC Region · updated daily

Regions

The U.S. nuclear fleet across the NRC's four regulatory regions. As of Sep 16, 2026 · Updated every morning from the NRC Daily Power Reactor Status Report.

Southeast

Atlanta, GA

86.6%

availability

11,322 MW

online of 13,070

1,748 MW

offline

13 units: 10 at power 2 derated 1 in outage

Top markets

Southern 8,080 MW Duke Progress 3,593 MW MISO 1,397 MW

Region III

Midwest

Lisle, IL

100.0%

availability

6,253 MW

online of 6,253

0 MW

offline

8 units: 8 at power

Top markets

MISO 6,253 MW

Region IV

West / South-Central

Arlington, TX

97.3%

availability

5,654 MW

online of 5,810

156 MW

offline

6 units: 4 at power 2 derated

Top markets

MISO 3,862 MW SPP 1,948 MW

Region Summary

Region	Coverage	Units	Capacity	Online	Availability	MW Offline	Offline / Derated	Top markets
Region II	Southeast	13	13,070	11,322	86.6%	1,748	1 / 2	SouthernDuke ProgressMISO
Region III	Midwest	8	6,253	6,253	100.0%	—	0 / 0	MISO
Region IV	West / South-Central	6	5,810	5,654	97.3%	156	0 / 2	MISOSPP

NRC regions are administrative areas of the U.S. Nuclear Regulatory Commission, derived here from each plant's state. Availability = generating MW ÷ installed MW.

Fleet by Region

Every reporting unit, grouped by region, biggest supply loss first

Unit	Market	State	Power	Capacity	MW offline	Status
Region II · Southeast (13 units, 11,322 MW online)
Vogtle 2	Southern	GA	0.0%	1,152	1,152	Outage
Vogtle 3	Southern	GA	60.0%	1,114	446	Derated
Hatch 2	Southern	GA	83.0%	883	150	Derated
Grand Gulf 1	MISO	MS	100.0%	1,397	—	At power
Vogtle 1	Southern	GA	100.0%	1,150	—	At power
Vogtle 4	Southern	GA	100.0%	1,114	—	At power
Harris 1	Duke Progress	NC	100.0%	964	—	At power
Brunswick 1	Duke Progress	NC	100.0%	938	—	At power
Brunswick 2	Duke Progress	NC	100.0%	932	—	At power
Farley 2	Southern	AL	100.0%	896	—	At power
Farley 1	Southern	AL	100.0%	895	—	At power
Hatch 1	Southern	GA	100.0%	876	—	At power
Robinson 2	Duke Progress	SC	100.0%	759	—	At power
Region III · Midwest (8 units, 6,253 MW online)
Callaway	MISO	MO	100.0%	1,190	—	At power
Fermi 2	MISO	MI	100.0%	1,141	—	At power
Clinton	MISO	IL	100.0%	1,079	—	At power
Monticello	MISO	MN	100.0%	617	—	At power
Point Beach 2	MISO	WI	100.0%	597	—	At power
Point Beach 1	MISO	WI	100.0%	589	—	At power
Prairie Island 1	MISO	MN	100.0%	521	—	At power
Prairie Island 2	MISO	MN	100.0%	519	—	At power
Region IV · West / South-Central (6 units, 5,654 MW online)
Cooper	SPP	NE	84.0%	772	123	Derated
Waterford 3	MISO	LA	97.0%	1,087	33	Derated
Wolf Creek 1	SPP	KS	100.0%	1,177	—	At power
Arkansas Nuclear 2	MISO	AR	100.0%	982	—	At power
River Bend 1	MISO	LA	100.0%	968	—	At power
Arkansas Nuclear 1	MISO	AR	100.0%	826	—	At power

Ontario (IESO) separate fleet

Ontario detail

MW Offline

3,640 MW

29.9% of the Ontario fleet

Units Offline

4 of 16

Bruce, Darlington, Pickering

Delivering

8,520 MW

of 12,160 MW installed

Resolution

1 hour

vs. once-daily for the U.S. fleet

Ontario is not an NRC region, so it sits outside the table above. Ontario is reported as a separate fleet and is never added into the U.S. national figures above. IESO grid-operator market data (MW delivered), not NRC percent-power.