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.
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12,123 MW
85.3% of 14,204 MW installed
Fleet Availability
85.3%
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
88.6%
availability
9,638 MW
online of 10,875
1,237 MW
offline
11 units:
9 at power
1 derated 1 in outage
Top markets
Duke Carolinas 7,226 MW
FPL 3,649 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 | 11 | 10,875 | 9,638 | 88.6% | 1,237 | 1 / 1 | Duke CarolinasFPL |
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 (11 units, 9,638 MW online) | ||||||
| McGuire 1 | Duke Carolinas | NC | 0.0% | 1,158 | 1,158 | Outage |
| Saint Lucie 2 | FPL | FL | 92.0% | 987 | 79 | Derated |
| Catawba 1 | Duke Carolinas | SC | 100.0% | 1,160 | — | At power |
| McGuire 2 | Duke Carolinas | NC | 100.0% | 1,158 | — | At power |
| Catawba 2 | Duke Carolinas | SC | 100.0% | 1,150 | — | At power |
| Saint Lucie 1 | FPL | FL | 100.0% | 981 | — | At power |
| Oconee 3 | Duke Carolinas | SC | 100.0% | 873 | — | At power |
| Oconee 2 | Duke Carolinas | SC | 100.0% | 865 | — | At power |
| Oconee 1 | Duke Carolinas | SC | 100.0% | 862 | — | At power |
| Turkey Point 4 | FPL | FL | 100.0% | 844 | — | At power |
| Turkey Point 3 | FPL | FL | 100.0% | 837 | — | 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.