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

99.0%

availability

8,140 MW

online of 8,219

79 MW

offline

9 units: 8 at power 1 derated

Top markets

FPL 3,649 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	9	8,219	8,140	99.0%	79	0 / 1	FPLDuke 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 (9 units, 8,140 MW online)
Saint Lucie 2	FPL	FL	92.0%	987	79	Derated
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
Brunswick 1	Duke Progress	NC	100.0%	938	—	At power
Brunswick 2	Duke Progress	NC	100.0%	932	—	At power
Turkey Point 4	FPL	FL	100.0%	844	—	At power
Turkey Point 3	FPL	FL	100.0%	837	—	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.