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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
44,223 MW
92.9% of 47,621 MW installed
Fleet Availability
92.9%
nuclear generating ÷ installed
Units in Outage
3
at a full outage (0% power)
Units Derated
4
running below 98% power
Region I

Northeast

King of Prussia, PA
100.0%
availability
14,298 MW
online of 14,298
0 MW
offline
13 units: 13 at power
Top markets
PJM 14,298 MW
Region II

Southeast

Atlanta, GA
85.4%
availability
13,147 MW
online of 15,397
2,249 MW
offline
15 units: 12 at power 1 derated 2 in outage
Top markets
TVA 8,181 MW FPL 3,649 MW PJM 3,567 MW
Region III

Midwest

Lisle, IL
93.3%
availability
13,830 MW
online of 14,826
996 MW
offline
14 units: 11 at power 2 derated 1 in outage
Top markets
PJM 14,826 MW
Region IV

West / South-Central

Arlington, TX
96.3%
availability
2,983 MW
online of 3,099
116 MW
offline
3 units: 2 at power 1 derated
Top markets
SPP 1,948 MW BPA 1,151 MW

Region Summary

RegionCoverageUnitsCapacity OnlineAvailability MW OfflineOffline / DeratedTop markets
Region I Northeast 13 14,298 14,298 100.0% — 0 / 0 PJM
Region II Southeast 15 15,397 13,147 85.4% 2,249 2 / 1 TVAFPLPJM
Region III Midwest 14 14,826 13,830 93.3% 996 1 / 2 PJM
Region IV West / South-Central 3 3,099 2,983 96.3% 116 0 / 1 SPPBPA
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
UnitMarketStatePowerCapacityMW offlineStatus
Region I · Northeast (13 units, 14,298 MW online)
Peach Bottom 3 PJM PA 100.0% 1,285 — At power
Peach Bottom 2 PJM PA 99.0% 1,265 — At power
Susquehanna 1 PJM PA 100.0% 1,247 — At power
Susquehanna 2 PJM PA 100.0% 1,247 — At power
Hope Creek 1 PJM NJ 98.0% 1,172 — At power
Salem 1 PJM NJ 100.0% 1,146 — At power
Salem 2 PJM NJ 100.0% 1,142 — At power
Limerick 2 PJM PA 100.0% 1,122 — At power
Limerick 1 PJM PA 100.0% 1,120 — At power
Beaver Valley 1 PJM PA 100.0% 907 — At power
Beaver Valley 2 PJM PA 100.0% 901 — At power
Calvert Cliffs 1 PJM MD 100.0% 884 — At power
Calvert Cliffs 2 PJM MD 100.0% 861 — At power
Region II · Southeast (15 units, 13,147 MW online)
Browns Ferry 1 TVA AL 0.0% 1,227 1,227 Outage
North Anna 2 PJM VA 0.0% 943 943 Outage
Saint Lucie 2 FPL FL 92.0% 987 79 Derated
Browns Ferry 3 TVA AL 100.0% 1,227 — At power
Browns Ferry 2 TVA AL 100.0% 1,208 — At power
Sequoyah 1 TVA TN 100.0% 1,148 — At power
Sequoyah 2 TVA TN 100.0% 1,126 — At power
Watts Bar 1 TVA TN 100.0% 1,123 — At power
Watts Bar 2 TVA TN 100.0% 1,122 — At power
Saint Lucie 1 FPL FL 100.0% 981 — At power
North Anna 1 PJM VA 100.0% 948 — At power
Turkey Point 4 FPL FL 100.0% 844 — At power
Surry 1 PJM VA 100.0% 838 — At power
Surry 2 PJM VA 100.0% 838 — At power
Turkey Point 3 FPL FL 100.0% 837 — At power
Region III · Midwest (14 units, 13,830 MW online)
Davis-Besse PJM OH 0.0% 894 894 Outage
Byron 2 PJM IL 95.0% 1,136 57 Derated
Quad Cities 2 PJM IL 95.0% 911 46 Derated
Perry 1 PJM OH 100.0% 1,240 — At power
Braidwood 1 PJM IL 100.0% 1,183 — At power
D.C. Cook 2 PJM MI 100.0% 1,168 — At power
Byron 1 PJM IL 100.0% 1,164 — At power
Braidwood 2 PJM IL 100.0% 1,152 — At power
LaSalle 2 PJM IL 100.0% 1,134 — At power
LaSalle 1 PJM IL 100.0% 1,131 — At power
D.C. Cook 1 PJM MI 100.0% 1,009 — At power
Quad Cities 1 PJM IL 100.0% 908 — At power
Dresden 2 PJM IL 100.0% 902 — At power
Dresden 3 PJM IL 100.0% 895 — At power
Region IV · West / South-Central (3 units, 2,983 MW online)
Cooper SPP NE 85.0% 772 116 Derated
Wolf Creek 1 SPP KS 100.0% 1,177 — At power
Columbia Generating Station BPA WA 100.0% 1,151 — At power

Ontario (IESO) separate fleet

Ontario detail
MW 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.