Fleet by NRC Region · updated daily

Regions

The U.S. nuclear fleet across the NRC's four regulatory regions. As of Sep 14, 2026 · Updated every morning from the NRC Daily Power Reactor Status Report.

Northeast

King of Prussia, PA

95.6%

availability

20,065 MW

online of 20,979

891 MW

offline

20 units: 18 at power 1 derated 1 in outage

Top markets

PJM 14,298 MW ISO-NE 3,352 MW NYISO 3,329 MW

Region II

Southeast

Atlanta, GA

87.4%

availability

32,057 MW

online of 36,669

4,613 MW

offline

36 units: 31 at power 1 derated 4 in outage

Top markets

TVA 8,181 MW Southern 8,080 MW Duke Carolinas 7,226 MW

Region III

Midwest

Lisle, IL

92.5%

availability

19,500 MW

online of 21,079

1,580 MW

offline

22 units: 18 at power 3 derated 1 in outage

Top markets

PJM 14,826 MW MISO 6,253 MW

Region IV

West / South-Central

Arlington, TX

98.8%

availability

17,898 MW

online of 18,124

227 MW

offline

16 units: 13 at power 3 derated

Top markets

ERCOT 4,986 MW SRP 3,937 MW MISO 3,862 MW

Region Summary

Region	Coverage	Units	Capacity	Online	Availability	MW Offline	Offline / Derated	Top markets
Region I	Northeast	20	20,979	20,065	95.6%	891	1 / 1	PJMISO-NENYISO
Region II	Southeast	36	36,669	32,057	87.4%	4,613	4 / 1	TVASouthernDuke Carolinas
Region III	Midwest	22	21,079	19,500	92.5%	1,580	1 / 3	PJMMISO
Region IV	West / South-Central	16	18,124	17,898	98.8%	227	0 / 3	ERCOTSRPMISO

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 I · Northeast (20 units, 20,065 MW online)
FitzPatrick	NYISO	NY	0.0%	844	844	Outage
Hope Creek 1	PJM	NJ	96.0%	1,172	47	Derated
Peach Bottom 3	PJM	PA	100.0%	1,285	—	At power
Nine Mile Point 2	NYISO	NY	100.0%	1,283	—	At power
Peach Bottom 2	PJM	PA	99.0%	1,265	—	At power
Susquehanna 1	PJM	PA	100.0%	1,247	—	At power
Susquehanna 2	PJM	PA	100.0%	1,247	—	At power
Seabrook 1	ISO-NE	NH	100.0%	1,246	—	At power
Millstone 3	ISO-NE	CT	100.0%	1,243	—	At power
Salem 1	PJM	NJ	100.0%	1,146	—	At power
Salem 2	PJM	NJ	100.0%	1,142	—	At power
Limerick 2	PJM	PA	99.0%	1,122	—	At power
Limerick 1	PJM	PA	100.0%	1,120	—	At power
Beaver Valley 1	PJM	PA	100.0%	907	—	At power
Beaver Valley 2	PJM	PA	100.0%	901	—	At power
Calvert Cliffs 1	PJM	MD	100.0%	884	—	At power
Millstone 2	ISO-NE	CT	100.0%	863	—	At power
Calvert Cliffs 2	PJM	MD	100.0%	861	—	At power
Nine Mile Point 1	NYISO	NY	100.0%	621	—	At power
Ginna	NYISO	NY	100.0%	581	—	At power
Region II · Southeast (36 units, 32,057 MW online)
Browns Ferry 1	TVA	AL	0.0%	1,227	1,227	Outage
McGuire 1	Duke Carolinas	NC	0.0%	1,158	1,158	Outage
Vogtle 2	Southern	GA	0.0%	1,152	1,152	Outage
North Anna 2	PJM	VA	0.0%	943	943	Outage
Hatch 2	Southern	GA	85.0%	883	132	Derated
Grand Gulf 1	MISO	MS	100.0%	1,397	—	At power
Browns Ferry 3	TVA	AL	100.0%	1,227	—	At power
Browns Ferry 2	TVA	AL	100.0%	1,208	—	At power
Catawba 1	Duke Carolinas	SC	100.0%	1,160	—	At power
McGuire 2	Duke Carolinas	NC	100.0%	1,158	—	At power
Catawba 2	Duke Carolinas	SC	100.0%	1,150	—	At power
Vogtle 1	Southern	GA	100.0%	1,150	—	At power
Sequoyah 1	TVA	TN	100.0%	1,148	—	At power
Sequoyah 2	TVA	TN	100.0%	1,126	—	At power
Watts Bar 1	TVA	TN	100.0%	1,123	—	At power
Watts Bar 2	TVA	TN	100.0%	1,122	—	At power
Vogtle 3	Southern	GA	100.0%	1,114	—	At power
Vogtle 4	Southern	GA	100.0%	1,114	—	At power
Saint Lucie 2	FPL	FL	100.0%	987	—	At power
Saint Lucie 1	FPL	FL	100.0%	981	—	At power
Summer	Dominion SC	SC	100.0%	977	—	At power
Harris 1	Duke Progress	NC	100.0%	964	—	At power
North Anna 1	PJM	VA	100.0%	948	—	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
Oconee 3	Duke Carolinas	SC	100.0%	873	—	At power
Oconee 2	Duke Carolinas	SC	100.0%	865	—	At power
Oconee 1	Duke Carolinas	SC	100.0%	862	—	At power
Turkey Point 4	FPL	FL	100.0%	844	—	At power
Surry 1	PJM	VA	100.0%	838	—	At power
Surry 2	PJM	VA	100.0%	838	—	At power
Turkey Point 3	FPL	FL	100.0%	837	—	At power
Robinson 2	Duke Progress	SC	100.0%	759	—	At power
Region III · Midwest (22 units, 19,500 MW online)
Davis-Besse	PJM	OH	0.0%	894	894	Outage
Clinton	MISO	IL	66.0%	1,079	367	Derated
Quad Cities 2	PJM	IL	70.0%	911	273	Derated
Byron 2	PJM	IL	96.0%	1,136	45	Derated
Perry 1	PJM	OH	100.0%	1,240	—	At power
Callaway	MISO	MO	100.0%	1,190	—	At power
Braidwood 1	PJM	IL	100.0%	1,183	—	At power
D.C. Cook 2	PJM	MI	100.0%	1,168	—	At power
Byron 1	PJM	IL	100.0%	1,164	—	At power
Braidwood 2	PJM	IL	100.0%	1,152	—	At power
Fermi 2	MISO	MI	100.0%	1,141	—	At power
LaSalle 2	PJM	IL	100.0%	1,134	—	At power
LaSalle 1	PJM	IL	100.0%	1,131	—	At power
D.C. Cook 1	PJM	MI	100.0%	1,009	—	At power
Quad Cities 1	PJM	IL	100.0%	908	—	At power
Dresden 2	PJM	IL	100.0%	902	—	At power
Dresden 3	PJM	IL	100.0%	895	—	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 (16 units, 17,898 MW online)
Cooper	SPP	NE	85.0%	772	116	Derated
Diablo Canyon 2	CAISO	CA	93.0%	1,118	78	Derated
Waterford 3	MISO	LA	97.0%	1,087	33	Derated
Palo Verde 2	SRP	AZ	100.0%	1,314	—	At power
Palo Verde 3	SRP	AZ	100.0%	1,312	—	At power
Palo Verde 1	SRP	AZ	100.0%	1,311	—	At power
South Texas 1	ERCOT	TX	100.0%	1,300	—	At power
South Texas 2	ERCOT	TX	100.0%	1,280	—	At power
Comanche Peak 1	ERCOT	TX	100.0%	1,209	—	At power
Comanche Peak 2	ERCOT	TX	100.0%	1,197	—	At power
Wolf Creek 1	SPP	KS	100.0%	1,177	—	At power
Columbia Generating Station	BPA	WA	100.0%	1,151	—	At power
Diablo Canyon 1	CAISO	CA	100.0%	1,122	—	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

3,632 MW

29.9% of the Ontario fleet

Units Offline

4 of 16

Bruce, Darlington, Pickering

Delivering

8,528 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.