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.
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21,107 MW
95.6% of 22,083 MW installed
Fleet Availability
95.6%
nuclear generating ÷ installed
Units in Outage
1
at a full outage (0% power)
Units Derated
2
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
98.9%
availability
8,540 MW
online of 8,639
99 MW
offline
9 units:
8 at power
1 derated
Top markets
FPL 3,649 MW
Duke Progress 3,593 MW
MISO 1,397 MW
Region III
Midwest
Lisle, IL
100.0%
availability
6,253 MW
online of 6,253
0 MW
offline
8 units:
8 at power
Top markets
MISO 6,253 MW
Region IV
West / South-Central
Arlington, TX
99.2%
availability
3,830 MW
online of 3,862
33 MW
offline
4 units:
3 at power
1 derated
Top markets
MISO 3,862 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 | 9 | 8,639 | 8,540 | 98.9% | 99 | 0 / 1 | FPLDuke ProgressMISO |
| Region III | Midwest | 8 | 6,253 | 6,253 | 100.0% | — | 0 / 0 | MISO |
| Region IV | West / South-Central | 4 | 3,862 | 3,830 | 99.2% | 33 | 0 / 1 | MISO |
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 (9 units, 8,540 MW online) | ||||||
| Saint Lucie 2 | FPL | FL | 90.0% | 987 | 99 | Derated |
| Grand Gulf 1 | MISO | MS | 100.0% | 1,397 | — | At power |
| Saint Lucie 1 | FPL | FL | 100.0% | 981 | — | 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 |
| Turkey Point 4 | FPL | FL | 100.0% | 844 | — | At power |
| Turkey Point 3 | FPL | FL | 100.0% | 837 | — | At power |
| Robinson 2 | Duke Progress | SC | 100.0% | 759 | — | At power |
| Region III · Midwest (8 units, 6,253 MW online) | ||||||
| Callaway | MISO | MO | 100.0% | 1,190 | — | At power |
| Fermi 2 | MISO | MI | 100.0% | 1,141 | — | At power |
| Clinton | MISO | IL | 100.0% | 1,079 | — | At power |
| Monticello | MISO | MN | 100.0% | 617 | — | At power |
| Point Beach 2 | MISO | WI | 100.0% | 597 | — | At power |
| Point Beach 1 | MISO | WI | 100.0% | 589 | — | At power |
| Prairie Island 1 | MISO | MN | 100.0% | 521 | — | At power |
| Prairie Island 2 | MISO | MN | 100.0% | 519 | — | At power |
| Region IV · West / South-Central (4 units, 3,830 MW online) | ||||||
| Waterford 3 | MISO | LA | 97.0% | 1,087 | 33 | Derated |
| Arkansas Nuclear 2 | MISO | AR | 100.0% | 982 | — | At power |
| River Bend 1 | MISO | LA | 100.0% | 968 | — | At power |
| Arkansas Nuclear 1 | MISO | AR | 100.0% | 826 | — | At power |