Fleet by NRC Region · updated daily

Regions

The U.S. nuclear fleet across the NRC's four regulatory regions. As of Sep 15, 2026 · Updated every morning from the NRC Daily Power Reactor Status Report.

Northeast

King of Prussia, PA

74.6%

availability

2,485 MW

online of 3,329

844 MW

offline

4 units: 3 at power 1 in outage

Top markets

NYISO 3,329 MW

Region II

Southeast

Atlanta, GA

89.3%

availability

9,661 MW

online of 10,819

1,158 MW

offline

11 units: 10 at power 1 in outage

Top markets

Duke Carolinas 7,226 MW Duke Progress 3,593 MW

Region Summary

Region	Coverage	Units	Capacity	Online	Availability	MW Offline	Offline / Derated	Top markets
Region I	Northeast	4	3,329	2,485	74.6%	844	1 / 0	NYISO
Region II	Southeast	11	10,819	9,661	89.3%	1,158	1 / 0	Duke CarolinasDuke Progress

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 (4 units, 2,485 MW online)
FitzPatrick	NYISO	NY	0.0%	844	844	Outage
Nine Mile Point 2	NYISO	NY	100.0%	1,283	—	At power
Nine Mile Point 1	NYISO	NY	100.0%	621	—	At power
Ginna	NYISO	NY	100.0%	581	—	At power
Region II · Southeast (11 units, 9,661 MW online)
McGuire 1	Duke Carolinas	NC	0.0%	1,158	1,158	Outage
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
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
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
Robinson 2	Duke Progress	SC	100.0%	759	—	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.