Fleet by NRC Region · updated daily
Regions
The U.S. nuclear fleet across the NRC's four regulatory regions. As of Sep 17, 2026 · Updated every morning from the NRC Daily Power Reactor Status Report.
Online Now
18,422 MW
86.7% of 21,247 MW installed
Fleet Availability
86.7%
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
82.6%
availability
13,436 MW
online of 16,261
2,825 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
4,986 MW
online of 4,986
0 MW
offline
4 units:
4 at power
Top markets
ERCOT 4,986 MW
Region Summary
| Region | Coverage | Units | Capacity | Online | Availability | MW Offline | Offline / Derated | Top markets |
|---|---|---|---|---|---|---|---|---|
| Region II | Southeast | 15 | 16,261 | 13,436 | 82.6% | 2,825 | 2 / 1 | TVASouthern |
| 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| Unit | Market | State | Power | Capacity | MW offline | Status |
|---|---|---|---|---|---|---|
| Region II · Southeast (15 units, 13,436 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 |
| Vogtle 3 | Southern | GA | 60.0% | 1,114 | 446 | 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 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 2 | Southern | GA | 100.0% | 883 | — | At power |
| Hatch 1 | Southern | GA | 100.0% | 876 | — | 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 |