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.
Online Now
3,636 MW
81.2% of 4,480 MW installed
Fleet Availability
81.2%
nuclear generating ÷ installed
Units in Outage
1
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 IV
West / South-Central
Arlington, TX
100.0%
availability
1,151 MW
online of 1,151
0 MW
offline
1 units:
1 at power
Top markets
BPA 1,151 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 IV | West / South-Central | 1 | 1,151 | 1,151 | 100.0% | — | 0 / 0 | BPA |
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 IV · West / South-Central (1 units, 1,151 MW online) | ||||||
| Columbia Generating Station | BPA | WA | 100.0% | 1,151 | — | At power |