Fleet by NRC Region · updated daily
Regions
The U.S. nuclear fleet across the NRC's four regulatory regions. As of Sep 18, 2026 · Updated every morning from the NRC Daily Power Reactor Status Report.
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15,246 MW
88.4% of 17,242 MW installed
Fleet Availability
88.4%
nuclear generating ÷ installed
Units in Outage
2
at a full outage (0% power)
Units Derated
0
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
90.1%
availability
10,521 MW
online of 11,673
1,152 MW
offline
12 units:
11 at power
1 in outage
Top markets
Southern 8,080 MW
Duke Progress 3,593 MW
Region IV
West / South-Central
Arlington, TX
100.0%
availability
2,240 MW
online of 2,240
0 MW
offline
2 units:
2 at power
Top markets
CAISO 2,240 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 | 12 | 11,673 | 10,521 | 90.1% | 1,152 | 1 / 0 | SouthernDuke Progress |
| Region IV | West / South-Central | 2 | 2,240 | 2,240 | 100.0% | — | 0 / 0 | CAISO |
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 (12 units, 10,521 MW online) | ||||||
| Vogtle 2 | Southern | GA | 0.0% | 1,152 | 1,152 | Outage |
| 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 |
| 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 |
| 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 |
| Robinson 2 | Duke Progress | SC | 100.0% | 759 | — | At power |
| Region IV · West / South-Central (2 units, 2,240 MW online) | ||||||
| Diablo Canyon 1 | CAISO | CA | 100.0% | 1,122 | — | At power |
| Diablo Canyon 2 | CAISO | CA | 100.0% | 1,118 | — | At power |