Fleet by NRC Region · updated daily
Regions
The U.S. nuclear fleet across the NRC's four regulatory regions. As of Sep 16, 2026 · Updated every morning from the NRC Daily Power Reactor Status Report.
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17,874 MW
99.1% of 18,030 MW installed
Fleet Availability
99.1%
nuclear generating ÷ installed
Units in Outage
0
at a full outage (0% power)
Units Derated
2
running below 98% power
Region II
Southeast
Atlanta, GA
100.0%
availability
5,967 MW
online of 5,967
0 MW
offline
6 units:
6 at power
Top markets
Duke Progress 3,593 MW
MISO 1,397 MW
Dominion SC 977 MW
Region III
Midwest
Lisle, IL
100.0%
availability
6,253 MW
online of 6,253
0 MW
offline
8 units:
8 at power
Top markets
MISO 6,253 MW
Region IV
West / South-Central
Arlington, TX
97.3%
availability
5,654 MW
online of 5,810
156 MW
offline
6 units:
4 at power
2 derated
Top markets
MISO 3,862 MW
SPP 1,948 MW
Region Summary
| Region | Coverage | Units | Capacity | Online | Availability | MW Offline | Offline / Derated | Top markets |
|---|---|---|---|---|---|---|---|---|
| Region II | Southeast | 6 | 5,967 | 5,967 | 100.0% | — | 0 / 0 | Duke ProgressMISODominion SC |
| Region III | Midwest | 8 | 6,253 | 6,253 | 100.0% | — | 0 / 0 | MISO |
| Region IV | West / South-Central | 6 | 5,810 | 5,654 | 97.3% | 156 | 0 / 2 | MISOSPP |
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 (6 units, 5,967 MW online) | ||||||
| Grand Gulf 1 | MISO | MS | 100.0% | 1,397 | — | At power |
| 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 III · Midwest (8 units, 6,253 MW online) | ||||||
| Callaway | MISO | MO | 100.0% | 1,190 | — | At power |
| Fermi 2 | MISO | MI | 100.0% | 1,141 | — | At power |
| Clinton | MISO | IL | 100.0% | 1,079 | — | At power |
| Monticello | MISO | MN | 100.0% | 617 | — | At power |
| Point Beach 2 | MISO | WI | 100.0% | 597 | — | At power |
| Point Beach 1 | MISO | WI | 100.0% | 589 | — | At power |
| Prairie Island 1 | MISO | MN | 100.0% | 521 | — | At power |
| Prairie Island 2 | MISO | MN | 100.0% | 519 | — | At power |
| Region IV · West / South-Central (6 units, 5,654 MW online) | ||||||
| Cooper | SPP | NE | 84.0% | 772 | 123 | Derated |
| Waterford 3 | MISO | LA | 97.0% | 1,087 | 33 | Derated |
| Wolf Creek 1 | SPP | KS | 100.0% | 1,177 | — | At power |
| Arkansas Nuclear 2 | MISO | AR | 100.0% | 982 | — | At power |
| River Bend 1 | MISO | LA | 100.0% | 968 | — | At power |
| Arkansas Nuclear 1 | MISO | AR | 100.0% | 826 | — | At power |