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.
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12,746 MW
99.0% of 12,869 MW installed
Fleet Availability
99.0%
nuclear generating ÷ installed
Units in Outage
0
at a full outage (0% power)
Units Derated
1
running below 98% power
Region II
Southeast
Atlanta, GA
100.0%
availability
3,593 MW
online of 3,593
0 MW
offline
4 units:
4 at power
Top markets
Duke Progress 3,593 MW
Region IV
West / South-Central
Arlington, TX
98.7%
availability
9,153 MW
online of 9,276
123 MW
offline
8 units:
7 at power
1 derated
Top markets
SRP 3,937 MW
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 | 4 | 3,593 | 3,593 | 100.0% | — | 0 / 0 | Duke Progress |
| Region IV | West / South-Central | 8 | 9,276 | 9,153 | 98.7% | 123 | 0 / 1 | SRPCAISOSPP |
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 (4 units, 3,593 MW online) | ||||||
| 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 (8 units, 9,153 MW online) | ||||||
| Cooper | SPP | NE | 84.0% | 772 | 123 | 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 |
| Columbia Generating Station | BPA | WA | 100.0% | 1,151 | — | At power |
| Diablo Canyon 1 | CAISO | CA | 100.0% | 1,122 | — | At power |
| Diablo Canyon 2 | CAISO | CA | 100.0% | 1,118 | — | At power |