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
14,611 MW
91.5% of 15,962 MW installed
Fleet Availability
91.5%
nuclear generating ÷ installed
Units in Outage
1
at a full outage (0% power)
Units Derated
1
running below 98% power
Region II
Southeast
Atlanta, GA
89.6%
availability
10,546 MW
online of 11,774
1,227 MW
offline
11 units:
10 at power
1 in outage
Top markets
TVA 8,181 MW
Duke Progress 3,593 MW
Region IV
West / South-Central
Arlington, TX
97.1%
availability
4,065 MW
online of 4,188
123 MW
offline
4 units:
3 at power
1 derated
Top markets
CAISO 2,240 MW
SPP 1,948 MW
Region Summary
| Region | Coverage | Units | Capacity | Online | Availability | MW Offline | Offline / Derated | Top markets |
|---|---|---|---|---|---|---|---|---|
| Region II | Southeast | 11 | 11,774 | 10,546 | 89.6% | 1,227 | 1 / 0 | TVADuke Progress |
| Region IV | West / South-Central | 4 | 4,188 | 4,065 | 97.1% | 123 | 0 / 1 | CAISOSPP |
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 (11 units, 10,546 MW online) | ||||||
| Browns Ferry 1 | TVA | AL | 0.0% | 1,227 | 1,227 | Outage |
| Browns Ferry 3 | TVA | AL | 100.0% | 1,227 | — | At power |
| Browns Ferry 2 | TVA | AL | 100.0% | 1,208 | — | 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 |
| 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 |
| Robinson 2 | Duke Progress | SC | 100.0% | 759 | — | At power |
| Region IV · West / South-Central (4 units, 4,065 MW online) | ||||||
| Cooper | SPP | NE | 84.0% | 772 | 123 | Derated |
| Wolf Creek 1 | SPP | KS | 100.0% | 1,177 | — | At power |
| Diablo Canyon 1 | CAISO | CA | 100.0% | 1,122 | — | At power |
| Diablo Canyon 2 | CAISO | CA | 100.0% | 1,118 | — | At power |