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
8,536 MW
98.9% of 8,635 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
97.3%
availability
3,550 MW
online of 3,649
99 MW
offline
4 units:
3 at power
1 derated
Top markets
FPL 3,649 MW
Region IV
West / South-Central
Arlington, TX
100.0%
availability
4,986 MW
online of 4,986
0 MW
offline
4 units:
4 at power
Top markets
ERCOT 4,986 MW
Region Summary
| Region | Coverage | Units | Capacity | Online | Availability | MW Offline | Offline / Derated | Top markets |
|---|---|---|---|---|---|---|---|---|
| Region II | Southeast | 4 | 3,649 | 3,550 | 97.3% | 99 | 0 / 1 | FPL |
| Region IV | West / South-Central | 4 | 4,986 | 4,986 | 100.0% | — | 0 / 0 | ERCOT |
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, 3,550 MW online) | ||||||
| Saint Lucie 2 | FPL | FL | 90.0% | 987 | 99 | Derated |
| Saint Lucie 1 | FPL | FL | 100.0% | 981 | — | At power |
| Turkey Point 4 | FPL | FL | 100.0% | 844 | — | At power |
| Turkey Point 3 | FPL | FL | 100.0% | 837 | — | At power |
| Region IV · West / South-Central (4 units, 4,986 MW online) | ||||||
| South Texas 1 | ERCOT | TX | 100.0% | 1,300 | — | At power |
| South Texas 2 | ERCOT | TX | 100.0% | 1,280 | — | At power |
| Comanche Peak 1 | ERCOT | TX | 100.0% | 1,209 | — | At power |
| Comanche Peak 2 | ERCOT | TX | 100.0% | 1,197 | — | At power |