Fleet by NRC Region · updated daily
Regions
The U.S. nuclear fleet across the NRC's four regulatory regions. As of Sep 15, 2026 · Updated every morning from the NRC Daily Power Reactor Status Report.
Online Now
13,314 MW
86.8% of 15,346 MW installed
Fleet Availability
86.8%
nuclear generating ÷ installed
Units in Outage
2
at a full outage (0% power)
Units Derated
1
running below 98% power
Region I
Northeast
King of Prussia, PA
74.6%
availability
2,485 MW
online of 3,329
844 MW
offline
4 units:
3 at power
1 in outage
Top markets
NYISO 3,329 MW
Region II
Southeast
Atlanta, GA
85.3%
availability
6,893 MW
online of 8,080
1,187 MW
offline
8 units:
6 at power
1 derated 1 in outage
Top markets
Southern 8,080 MW
Region IV
West / South-Central
Arlington, TX
100.0%
availability
3,937 MW
online of 3,937
0 MW
offline
3 units:
3 at power
Top markets
SRP 3,937 MW
Region Summary
| Region | Coverage | Units | Capacity | Online | Availability | MW Offline | Offline / Derated | Top markets |
|---|---|---|---|---|---|---|---|---|
| Region I | Northeast | 4 | 3,329 | 2,485 | 74.6% | 844 | 1 / 0 | NYISO |
| Region II | Southeast | 8 | 8,080 | 6,893 | 85.3% | 1,187 | 1 / 1 | Southern |
| Region IV | West / South-Central | 3 | 3,937 | 3,937 | 100.0% | — | 0 / 0 | SRP |
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 (4 units, 2,485 MW online) | ||||||
| FitzPatrick | NYISO | NY | 0.0% | 844 | 844 | Outage |
| Nine Mile Point 2 | NYISO | NY | 100.0% | 1,283 | — | At power |
| Nine Mile Point 1 | NYISO | NY | 100.0% | 621 | — | At power |
| Ginna | NYISO | NY | 100.0% | 581 | — | At power |
| Region II · Southeast (8 units, 6,893 MW online) | ||||||
| Vogtle 2 | Southern | GA | 0.0% | 1,152 | 1,152 | Outage |
| Hatch 2 | Southern | GA | 96.0% | 883 | 35 | Derated |
| Vogtle 1 | Southern | GA | 100.0% | 1,150 | — | At power |
| Vogtle 3 | Southern | GA | 100.0% | 1,114 | — | At power |
| Vogtle 4 | Southern | GA | 100.0% | 1,114 | — | At power |
| Farley 2 | Southern | AL | 100.0% | 896 | — | At power |
| Farley 1 | Southern | AL | 100.0% | 895 | — | At power |
| Hatch 1 | Southern | GA | 100.0% | 876 | — | At power |
| Region IV · West / South-Central (3 units, 3,937 MW online) | ||||||
| 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 |
Ontario (IESO) separate fleet
Ontario detailMW Offline
3,632 MW
29.9% of the Ontario fleet
Units Offline
4 of 16
Bruce, Darlington, Pickering
Delivering
8,528 MW
of 12,160 MW installed
Resolution
1 hour
vs. once-daily for the U.S. fleet
Ontario is not an NRC region, so it sits outside the table above. Ontario is reported as a separate fleet and is never added into the U.S. national figures above. IESO grid-operator market data (MW delivered), not NRC percent-power.