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
22,323 MW
90.1% of 24,784 MW installed
Fleet Availability
90.1%
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
87.6%
availability
16,553 MW
online of 18,899
2,345 MW
offline
19 units:
16 at power
1 derated 2 in outage
Top markets
Southern 8,080 MW
Duke Carolinas 7,226 MW
Duke Progress 3,593 MW
Region IV
West / South-Central
Arlington, TX
98.0%
availability
5,769 MW
online of 5,885
116 MW
offline
5 units:
4 at power
1 derated
Top markets
SRP 3,937 MW
SPP 1,948 MW
Region Summary
| Region | Coverage | Units | Capacity | Online | Availability | MW Offline | Offline / Derated | Top markets |
|---|---|---|---|---|---|---|---|---|
| Region II | Southeast | 19 | 18,899 | 16,553 | 87.6% | 2,345 | 2 / 1 | SouthernDuke CarolinasDuke Progress |
| Region IV | West / South-Central | 5 | 5,885 | 5,769 | 98.0% | 116 | 0 / 1 | SRPSPP |
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 (19 units, 16,553 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 |
| 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 |
| 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 |
| Robinson 2 | Duke Progress | SC | 100.0% | 759 | — | At power |
| Region IV · West / South-Central (5 units, 5,769 MW online) | ||||||
| Cooper | SPP | NE | 85.0% | 772 | 116 | Derated |
| Palo Verde 2 | SRP | AZ | 100.0% | 1,314 | — | At power |
| Palo Verde 3 | SRP | AZ | 100.0% | 1,312 | — | At power |
| Palo Verde 1 | SRP | AZ | 100.0% | 1,311 | — | At power |
| Wolf Creek 1 | SPP | KS | 100.0% | 1,177 | — | At power |
Ontario (IESO) separate fleet
Ontario detailMW 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.