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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.
Online Now
13,938 MW
85.6% of 16,283 MW installed
Fleet Availability
85.6%
nuclear generating ÷ installed
Units in Outage
2
at a full outage (0% power)
Units Derated
1
running below 98% power
Region II

Southeast

Atlanta, GA
85.6%
availability
13,938 MW
online of 16,283
2,345 MW
offline
16 units: 13 at power 1 derated 2 in outage
Top markets
Southern 8,080 MW Duke Carolinas 7,226 MW Dominion SC 977 MW

Region Summary

RegionCoverageUnitsCapacity OnlineAvailability MW OfflineOffline / DeratedTop markets
Region II Southeast 16 16,283 13,938 85.6% 2,345 2 / 1 SouthernDuke CarolinasDominion 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
UnitMarketStatePowerCapacityMW offlineStatus
Region II · Southeast (16 units, 13,938 MW online)
McGuire 1 Duke Carolinas NC 0.0% 1,158 1,158 Outage
Vogtle 2 Southern GA 0.0% 1,152 1,152 Outage
Hatch 2 Southern GA 96.0% 883 35 Derated
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
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
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

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.