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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
21,517 MW
89.9% of 23,941 MW installed
Fleet Availability
89.9%
nuclear generating ÷ installed
Units in Outage
2
at a full outage (0% power)
Units Derated
2
running below 98% power
Region II

Southeast

Atlanta, GA
87.2%
availability
16,531 MW
online of 18,955
2,424 MW
offline
19 units: 15 at power 2 derated 2 in outage
Top markets
Southern 8,080 MW Duke Carolinas 7,226 MW FPL 3,649 MW
Region IV

West / South-Central

Arlington, TX
100.0%
availability
4,986 MW
online of 4,986
0 MW
offline
4 units: 4 at power
Top markets
ERCOT 4,986 MW

Region Summary

RegionCoverageUnitsCapacity OnlineAvailability MW OfflineOffline / DeratedTop markets
Region II Southeast 19 18,955 16,531 87.2% 2,424 2 / 2 SouthernDuke CarolinasFPL
Region IV West / South-Central 4 4,986 4,986 100.0% — 0 / 0 ERCOT
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 (19 units, 16,531 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
Saint Lucie 2 FPL FL 92.0% 987 79 Derated
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
Saint Lucie 1 FPL FL 100.0% 981 — 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
Turkey Point 4 FPL FL 100.0% 844 — At power
Turkey Point 3 FPL FL 100.0% 837 — At power
Region IV · West / South-Central (4 units, 4,986 MW online)
South Texas 1 ERCOT TX 100.0% 1,300 — At power
South Texas 2 ERCOT TX 100.0% 1,280 — At power
Comanche Peak 1 ERCOT TX 100.0% 1,209 — At power
Comanche Peak 2 ERCOT TX 100.0% 1,197 — 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.