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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50,182 MW
92.5% of 54,232 MW installed
Fleet Availability
92.5%
nuclear generating ÷ installed
Units in Outage
3
at a full outage (0% power)
Units Derated
6
running below 98% power
Region I
Northeast
King of Prussia, PA
99.7%
availability
14,261 MW
online of 14,298
37 MW
offline
13 units:
12 at power
1 derated
Top markets
PJM 14,298 MW
Region II
Southeast
Atlanta, GA
80.5%
availability
10,503 MW
online of 13,044
2,541 MW
offline
13 units:
10 at power
1 derated 2 in outage
Top markets
Southern 8,080 MW
PJM 3,567 MW
MISO 1,397 MW
Region III
Midwest
Lisle, IL
94.0%
availability
19,813 MW
online of 21,079
1,266 MW
offline
22 units:
19 at power
2 derated 1 in outage
Top markets
PJM 14,826 MW
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 I | Northeast | 13 | 14,298 | 14,261 | 99.7% | 37 | 0 / 1 | PJM |
| Region II | Southeast | 13 | 13,044 | 10,503 | 80.5% | 2,541 | 2 / 1 | SouthernPJMMISO |
| Region III | Midwest | 22 | 21,079 | 19,813 | 94.0% | 1,266 | 1 / 2 | PJMMISO |
| 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 I · Northeast (13 units, 14,261 MW online) | ||||||
| Susquehanna 1 | PJM | PA | 97.0% | 1,247 | 37 | Derated |
| Peach Bottom 3 | PJM | PA | 100.0% | 1,285 | — | At power |
| Peach Bottom 2 | PJM | PA | 98.0% | 1,265 | — | At power |
| Susquehanna 2 | PJM | PA | 100.0% | 1,247 | — | At power |
| Hope Creek 1 | PJM | NJ | 100.0% | 1,172 | — | At power |
| Salem 1 | PJM | NJ | 100.0% | 1,146 | — | At power |
| Salem 2 | PJM | NJ | 100.0% | 1,142 | — | At power |
| Limerick 2 | PJM | PA | 100.0% | 1,122 | — | At power |
| Limerick 1 | PJM | PA | 100.0% | 1,120 | — | At power |
| Beaver Valley 1 | PJM | PA | 100.0% | 907 | — | At power |
| Beaver Valley 2 | PJM | PA | 100.0% | 901 | — | At power |
| Calvert Cliffs 1 | PJM | MD | 100.0% | 884 | — | At power |
| Calvert Cliffs 2 | PJM | MD | 100.0% | 861 | — | At power |
| Region II · Southeast (13 units, 10,503 MW online) | ||||||
| Vogtle 2 | Southern | GA | 0.0% | 1,152 | 1,152 | Outage |
| North Anna 2 | PJM | VA | 0.0% | 943 | 943 | Outage |
| Vogtle 3 | Southern | GA | 60.0% | 1,114 | 446 | Derated |
| Grand Gulf 1 | MISO | MS | 100.0% | 1,397 | — | At power |
| Vogtle 1 | Southern | GA | 100.0% | 1,150 | — | At power |
| Vogtle 4 | Southern | GA | 100.0% | 1,114 | — | At power |
| North Anna 1 | PJM | VA | 100.0% | 948 | — | 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 |
| Surry 1 | PJM | VA | 100.0% | 838 | — | At power |
| Surry 2 | PJM | VA | 100.0% | 838 | — | At power |
| Region III · Midwest (22 units, 19,813 MW online) | ||||||
| Davis-Besse | PJM | OH | 0.0% | 894 | 894 | Outage |
| D.C. Cook 1 | PJM | MI | 71.0% | 1,009 | 293 | Derated |
| Byron 2 | PJM | IL | 93.0% | 1,136 | 80 | Derated |
| Perry 1 | PJM | OH | 98.0% | 1,240 | — | At power |
| Callaway | MISO | MO | 100.0% | 1,190 | — | At power |
| Braidwood 1 | PJM | IL | 100.0% | 1,183 | — | At power |
| D.C. Cook 2 | PJM | MI | 100.0% | 1,168 | — | At power |
| Byron 1 | PJM | IL | 100.0% | 1,164 | — | At power |
| Braidwood 2 | PJM | IL | 100.0% | 1,152 | — | At power |
| Fermi 2 | MISO | MI | 100.0% | 1,141 | — | At power |
| LaSalle 2 | PJM | IL | 100.0% | 1,134 | — | At power |
| LaSalle 1 | PJM | IL | 100.0% | 1,131 | — | At power |
| Clinton | MISO | IL | 100.0% | 1,079 | — | At power |
| Quad Cities 2 | PJM | IL | 100.0% | 911 | — | At power |
| Quad Cities 1 | PJM | IL | 100.0% | 908 | — | At power |
| Dresden 2 | PJM | IL | 100.0% | 902 | — | At power |
| Dresden 3 | PJM | IL | 100.0% | 895 | — | 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 |