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

86.9%

availability

7,870 MW

online of 9,057

1,187 MW

offline

9 units: 7 at power 1 derated 1 in outage

Top markets

Southern 8,080 MW Dominion SC 977 MW

Region Summary

Region	Coverage	Units	Capacity	Online	Availability	MW Offline	Offline / Derated	Top markets
Region II	Southeast	9	9,057	7,870	86.9%	1,187	1 / 1	SouthernDominion 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 (9 units, 7,870 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
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

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.