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
15,551 MW
92.5% of 16,817 MW installed
Fleet Availability
92.5%
nuclear generating ÷ installed
Units in Outage
1
at a full outage (0% power)
Units Derated
2
running below 98% power
Region II
Southeast
Atlanta, GA
89.2%
availability
10,463 MW
online of 11,729
1,266 MW
offline
12 units:
9 at power
2 derated 1 in outage
Top markets
Southern 8,080 MW
FPL 3,649 MW
Region IV
West / South-Central
Arlington, TX
100.0%
availability
5,088 MW
online of 5,088
0 MW
offline
4 units:
4 at power
Top markets
SRP 3,937 MW
BPA 1,151 MW
Region Summary
| Region | Coverage | Units | Capacity | Online | Availability | MW Offline | Offline / Derated | Top markets |
|---|---|---|---|---|---|---|---|---|
| Region II | Southeast | 12 | 11,729 | 10,463 | 89.2% | 1,266 | 1 / 2 | SouthernFPL |
| Region IV | West / South-Central | 4 | 5,088 | 5,088 | 100.0% | — | 0 / 0 | SRPBPA |
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 (12 units, 10,463 MW online) | ||||||
| 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 |
| 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 |
| 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, 5,088 MW online) | ||||||
| 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 |
| Columbia Generating Station | BPA | WA | 100.0% | 1,151 | — | 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.