Benchmark historical performance across a quarter-century of fleet-wide reactor data. Track long-term maintenance trends, refueling cycles, and realized generation impacts from 2000 to the present.
This timeline maps 51 reactor outages across the US fleet for Spring 2026. That includes 33 completed refueling outages, 8 unplanned outages, and 10 reactor trips. The longest ran 97 days at Turkey Point 3.
Gantt Chart Timeline
Aug 7, 2026 8/7/26 · 5:13 AM
Key
Detailed Schedule
The table below lists each outage with its exact start date, end date, and duration. Completed outages during Spring 2026 averaged 30 days. Refueling outages also show the plant's own cycle designator next to the type (for example 1R23 ); outages with no recorded designator show none.
Unit
Type
Start Date
End Date
Duration
Context
McGuire 1
Jan 1, 2026
Jan 2, 2026
2 days
-
Hatch 1
RFO
1R32
Jan 17, 2026
Feb 28, 2026
43 days
D.C. Cook 2
Jan 18, 2026
Jan 20, 2026
3 days
-
Summer
Jan 31, 2026
Feb 7, 2026
8 days
-
Turkey Point 3
RFO
TP3-35
Feb 4, 2026
May 11, 2026
97 days
LaSalle 1
RFO
L1R21
Feb 9, 2026
Feb 27, 2026
19 days
-
Columbia Generating Station
Feb 13, 2026
Feb 16, 2026
4 days
-
Grand Gulf 1
RFO
RF25
Feb 14, 2026
Mar 26, 2026
41 days
Calvert Cliffs 1
RFO
CC1R28
Feb 16, 2026
Mar 14, 2026
27 days
-
Monticello
Unscheduled
Feb 21, 2026
Apr 2, 2026
41 days
Browns Ferry 3
RFO
U3R22
Feb 21, 2026
Mar 26, 2026
34 days
-
Vogtle 1
RFO
1R26
Feb 22, 2026
Apr 2, 2026
40 days
-
Hope Creek 1
Feb 23, 2026
Mar 7, 2026
13 days
-
Brunswick 1
RFO
B1R26
Feb 26, 2026
Apr 14, 2026
48 days
-
Summer
RFO
RF-29
Feb 28, 2026
Apr 9, 2026
41 days
-
Davis-Besse
RFO
1R24
Mar 1, 2026
Mar 30, 2026
30 days
-
Byron 1
RFO
B1R27
Mar 2, 2026
Apr 1, 2026
31 days
-
Nine Mile Point 2
RFO
N2R20
Mar 9, 2026
Apr 1, 2026
24 days
-
Arkansas Nuclear 2
RFO
2R31
Mar 14, 2026
Apr 30, 2026
48 days
-
Point Beach 2
RFO
U2R41
Mar 14, 2026
Apr 10, 2026
28 days
-
Palo Verde 2
RFO 2R26
Mar 20, 2026
May 4, 2026
46 days
-
South Texas 1
RFO
1RE26
Mar 21, 2026
Apr 22, 2026
33 days
-
McGuire 2
RFO
M2R30
Mar 22, 2026
Apr 18, 2026
28 days
-
Fermi 2
RFO
RF23
Mar 23, 2026
May 11, 2026
50 days
-
Susquehanna 1
RFO
U1 24RIO
Mar 23, 2026
May 4, 2026
43 days
-
Quad Cities 2
RFO
Q2R28
Mar 30, 2026
Apr 23, 2026
25 days
-
Catawba 2
Unscheduled
Mar 31, 2026
Apr 14, 2026
15 days
-
Seabrook 1
RFO
OR24
Apr 4, 2026
May 6, 2026
33 days
-
Salem 2
RFO
2R28
Apr 5, 2026
May 6, 2026
32 days
-
Beaver Valley 2
RFO
2R25
Apr 5, 2026
May 3, 2026
29 days
-
Ginna
RFO
G1R46
Apr 6, 2026
Apr 23, 2026
18 days
-
Dresden 3
Unscheduled
Apr 8, 2026
Apr 13, 2026
6 days
-
Surry 2
RFO
EOC33
Apr 12, 2026
Jun 7, 2026
57 days
-
Millstone 2
RFO
2R30
Apr 13, 2026
May 13, 2026
31 days
-
Saint Lucie 2
RFO
SL2-29
Apr 18, 2026
Jun 4, 2026
48 days
-
Watts Bar 1
RFO
U1R20
Apr 18, 2026
May 15, 2026
28 days
-
Catawba 1
RFO
C1R29
Apr 18, 2026
May 13, 2026
26 days
-
Browns Ferry 1
Unscheduled
Apr 18, 2026
Apr 23, 2026
6 days
-
Vogtle 3
RFO
3R02
Apr 19, 2026
May 16, 2026
28 days
-
Braidwood 2
RFO
A2R25
Apr 20, 2026
May 6, 2026
17 days
-
Hatch 1
Apr 24, 2026
Apr 27, 2026
4 days
-
Limerick 1
RFO
1R21
Apr 27, 2026
May 19, 2026
23 days
-
Browns Ferry 3
Unscheduled
Apr 28, 2026
Apr 29, 2026
2 days
-
Comanche Peak 2
RFO
2RF22
May 4, 2026
May 28, 2026
25 days
-
Oconee 3
RFO
3EOC33
May 6, 2026
May 28, 2026
23 days
-
Quad Cities 2
Unscheduled
May 9, 2026
May 16, 2026
8 days
-
Hatch 2
Unscheduled
May 11, 2026
May 15, 2026
5 days
-
Fermi 2
May 19, 2026
May 21, 2026
3 days
LaSalle 1
Unscheduled
May 27, 2026
May 30, 2026
4 days
-
Millstone 2
Jun 5, 2026
Jun 14, 2026
10 days
-
South Texas 2
Jun 18, 2026
Jun 27, 2026
10 days
-
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