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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11,483 MW
98.9% of 11,606 MW installed
Fleet Availability
98.9%
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
4,570 MW
online of 4,570
0 MW
offline
5 units:
5 at power
Top markets
Duke Progress 3,593 MW
Dominion SC 977 MW
Region IV
West / South-Central
Arlington, TX
98.2%
availability
6,913 MW
online of 7,036
123 MW
offline
6 units:
5 at power
1 derated
Top markets
SRP 3,937 MW
SPP 1,948 MW
BPA 1,151 MW
Region Summary
| Region | Coverage | Units | Capacity | Online | Availability | MW Offline | Offline / Derated | Top markets |
|---|---|---|---|---|---|---|---|---|
| Region II | Southeast | 5 | 4,570 | 4,570 | 100.0% | — | 0 / 0 | Duke ProgressDominion SC |
| Region IV | West / South-Central | 6 | 7,036 | 6,913 | 98.2% | 123 | 0 / 1 | SRPSPPBPA |
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 (5 units, 4,570 MW online) | ||||||
| Summer | Dominion SC | SC | 100.0% | 977 | — | 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 (6 units, 6,913 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 |