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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 17, 2026 · Updated every morning from the NRC Daily Power Reactor Status Report.
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38,275 MW
94.1% of 40,670 MW installed
Fleet Availability
94.1%
nuclear generating ÷ installed
Units in Outage
2
at a full outage (0% power)
Units Derated
4
running below 98% power
Region I

Northeast

King of Prussia, PA
99.8%
availability
17,613 MW
online of 17,651
37 MW
offline
16 units: 15 at power 1 derated
Top markets
PJM 14,298 MW ISO-NE 3,352 MW
Region II

Southeast

Atlanta, GA
87.3%
availability
7,152 MW
online of 8,193
1,042 MW
offline
9 units: 7 at power 1 derated 1 in outage
Top markets
FPL 3,649 MW PJM 3,567 MW Dominion SC 977 MW
Region III

Midwest

Lisle, IL
91.5%
availability
13,560 MW
online of 14,826
1,266 MW
offline
14 units: 11 at power 2 derated 1 in outage
Top markets
PJM 14,826 MW

Region Summary

RegionCoverageUnitsCapacity OnlineAvailability MW OfflineOffline / DeratedTop markets
Region I Northeast 16 17,651 17,613 99.8% 37 0 / 1 PJMISO-NE
Region II Southeast 9 8,193 7,152 87.3% 1,042 1 / 1 FPLPJMDominion SC
Region III Midwest 14 14,826 13,560 91.5% 1,266 1 / 2 PJM
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 (16 units, 17,613 MW online)
Susquehanna 1 PJM PA 97.0% 1,247 37 Derated
Peach Bottom 3 PJM PA 100.0% 1,285 — At power
Peach Bottom 2 PJM PA 98.0% 1,265 — At power
Susquehanna 2 PJM PA 100.0% 1,247 — At power
Seabrook 1 ISO-NE NH 100.0% 1,246 — At power
Millstone 3 ISO-NE CT 100.0% 1,243 — At power
Hope Creek 1 PJM NJ 100.0% 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
Millstone 2 ISO-NE CT 100.0% 863 — At power
Calvert Cliffs 2 PJM MD 100.0% 861 — At power
Region II · Southeast (9 units, 7,152 MW online)
North Anna 2 PJM VA 0.0% 943 943 Outage
Saint Lucie 2 FPL FL 90.0% 987 99 Derated
Saint Lucie 1 FPL FL 100.0% 981 — At power
Summer Dominion SC SC 100.0% 977 — 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, 13,560 MW online)
Davis-Besse PJM OH 0.0% 894 894 Outage
D.C. Cook 1 PJM MI 71.0% 1,009 293 Derated
Byron 2 PJM IL 93.0% 1,136 80 Derated
Perry 1 PJM OH 98.0% 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
Quad Cities 2 PJM IL 100.0% 911 — 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