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
14,997 MW
86.1% of 17,412 MW installed
Fleet Availability
86.1%
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
85.1%
availability
13,846 MW
online of 16,261
2,415 MW
offline
15 units:
12 at power
1 derated 2 in outage
Top markets
TVA 8,181 MW
Southern 8,080 MW
Region IV
West / South-Central
Arlington, TX
100.0%
availability
1,151 MW
online of 1,151
0 MW
offline
1 units:
1 at power
Top markets
BPA 1,151 MW
Region Summary
| Region | Coverage | Units | Capacity | Online | Availability | MW Offline | Offline / Derated | Top markets |
|---|---|---|---|---|---|---|---|---|
| Region II | Southeast | 15 | 16,261 | 13,846 | 85.1% | 2,415 | 2 / 1 | TVASouthern |
| Region IV | West / South-Central | 1 | 1,151 | 1,151 | 100.0% | — | 0 / 0 | BPA |
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 (15 units, 13,846 MW online) | ||||||
| Browns Ferry 1 | TVA | AL | 0.0% | 1,227 | 1,227 | Outage |
| Vogtle 2 | Southern | GA | 0.0% | 1,152 | 1,152 | Outage |
| Hatch 2 | Southern | GA | 96.0% | 883 | 35 | Derated |
| Browns Ferry 3 | TVA | AL | 100.0% | 1,227 | — | At power |
| Browns Ferry 2 | TVA | AL | 100.0% | 1,208 | — | At power |
| Vogtle 1 | Southern | GA | 100.0% | 1,150 | — | At power |
| Sequoyah 1 | TVA | TN | 100.0% | 1,148 | — | At power |
| Sequoyah 2 | TVA | TN | 100.0% | 1,126 | — | At power |
| Watts Bar 1 | TVA | TN | 100.0% | 1,123 | — | At power |
| Watts Bar 2 | TVA | TN | 100.0% | 1,122 | — | At power |
| Vogtle 3 | Southern | GA | 100.0% | 1,114 | — | At power |
| Vogtle 4 | Southern | GA | 100.0% | 1,114 | — | 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 |
| Region IV · West / South-Central (1 units, 1,151 MW online) | ||||||
| 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.