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.

Southeast

Atlanta, GA

90.6%

availability

11,463 MW

online of 12,650

1,187 MW

offline

13 units: 11 at power 1 derated 1 in outage

Top markets

Southern 8,080 MW Duke Progress 3,593 MW Dominion SC 977 MW

Region Summary

Region	Coverage	Units	Capacity	Online	Availability	MW Offline	Offline / Derated	Top markets
Region II	Southeast	13	12,650	11,463	90.6%	1,187	1 / 1	SouthernDuke ProgressDominion SC

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, 11,463 MW online)
Vogtle 2	Southern	GA	0.0%	1,152	1,152	Outage
Hatch 2	Southern	GA	96.0%	883	35	Derated
Vogtle 1	Southern	GA	100.0%	1,150	—	At power
Vogtle 3	Southern	GA	100.0%	1,114	—	At power
Vogtle 4	Southern	GA	100.0%	1,114	—	At power
Summer	Dominion SC	SC	100.0%	977	—	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

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.