December 2016
Summary of Nuclear Plant Production Data
 The U.S. fleet’s average estimated capacity factor in December 2016 was 96.2 percent, compared to 94.8
percent in December 2015. Eighty-five reactors operated at 99 percent or higher capacity factor during
December. The average estimated capacity factor for the full year 2016 was 91.5 percent, compared to 92.2
percent for 2015.
 Estimated U.S. nuclear generation in December 2016 was 71.7 billion kWh, compared to 69.6 billion kWh in
December 2015. Estimated U.S. nuclear generation for the full year 2016 was 804.9 billion kWh, compared
to 797.2 billion kWh in 2015.
 Refueling outages in 2016 averaged 35 days, one day less than the 2015 average. Fifty-one reactors
refueled in 2016, compared to 63 in 2015.
 The estimated full-year generation for Palo Verde 2, 11.7 billion kWh, was higher than any other unit’s 2016
estimated total.
Monthly Nuclear Generation (BkWh)
80.0
2015
2016
71.7
70.0
69.6
60.0
50.0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1201 F Street, NW
Suite 1100
Washington, DC
20004-1218
Year
2014
2015
2016
Capacity Factor (%)
December
Year to Date
99.6
91.7
94.8
92.2
96.2
91.5
Generation (BkWh)
December
Year to Date
73.4
797.2
69.6
797.2
71.7
804.9
www.nei.org
Type
# of Units
BWR
4
18
BWR
5
6
Total B&W CE
4
4
34
6
12
Capacity Factors - Percent
98.9
99.3
92.0
76.2
94.6
87.1
97.8
91.5
94.0
80.5
91.6
89.9
2
2
3
6
December
81.9
Year-to-date
90.5
PWR
W2
5
W3
13
W4
30
PWR
Total
66
93.4
102.8
103.3
96.0
96.7
93.9
94.6
94.9
89.6
91.9
Average Refueling Outage Duration - Days (2010 to Present)
18 Mo. Cycle
-
-
33.9
-
42.3
37.0
62.2
48.9
45.3
44.0
38.1
42.4
24 Mo. Cycle
29.1
33.6
38.7
40.3
30.9
36.7
44.3
33.6
-
-
37.3
40.6
Capacity Factor
(%)
2
Unit
Arkansas Nuclear One 1
Arkansas Nuclear One 2
Beaver Valley 1
Beaver Valley 2
Braidwood 1
Braidwood 2
Browns Ferry 1
Browns Ferry 2
Browns Ferry 3
Brunswick 1
Brunswick 2
Byron 1
Byron 2
Callaway
Calvert Cliffs 1
Calvert Cliffs 2
Catawba 1
Catawba 2
Clinton
Columbia 2
Comanche Peak 1
Comanche Peak 2
Cooper
Davis Besse
Diablo Canyon 1
Diablo Canyon 2
Donald C. Cook 1
Donald C. Cook 2
Dresden 2
Dresden 3
Duane Arnold
Edwin I. Hatch 1
Edwin I. Hatch 2
Fermi 2
Fort Calhoun
Ginna
Grand Gulf 1
H.B. Robinson 2
Hope Creek 1
Indian Point 2
Indian Point 3
James A. Fitzpatrick
Joseph M. Farley 1
Joseph M. Farley 2
La Salle 1
La Salle 2
Limerick 1
Limerick 2
McGuire 1
McGuire 2
Millstone 2
Millstone 3
Monticello
Nine Mile Point 1
Nine Mile Point 2
North Anna 1
North Anna 2
Oconee 1
Oconee 2
Oconee 3
Oyster Creek 1
Palisades
Palo Verde 1
Palo Verde 2
2
Net
MWe
826
983
920
914
1,183
1,154
1,101
1,104
1,105
938
932
1,164
1,136
1,190
866
842
1,140
1,150
1,065
1,158
1,205
1,195
764
894
1,122
1,118
1,009
1,060
902
895
601
876
883
1,124
478
582
1,409
741
1,172
1,020
1,041
852
874
883
1,135
1,136
1,120
1,122
1,158
1,158
868
1,220
607
637
1,287
948
944
847
848
859
608
784
1,311
1,314
Month
49.7
102.8
102.6
102.1
103.3
102.4
103.9
95.7
102.4
102.4
96.6
103.4
103.1
104.4
104.5
99.4
103.9
102.1
101.2
75.7
102.5
102.5
105.8
101.9
102.2
101.3
108.1
0.0
100.5
104.7
102.7
101.8
99.3
101.6
0.0
99.5
0.0
107.1
106.1
100.5
99.5
55.4
101.6
101.4
103.2
103.0
105.2
105.3
102.8
103.0
99.0
101.2
109.1
87.1
86.2
103.1
103.5
101.4
102.8
102.1
76.7
103.8
101.5
101.9
YTD
77.1
89.0
91.0
98.0
92.6
100.9
86.7
98.2
85.6
88.8
98.6
101.3
92.6
90.4
94.5
102.4
102.3
92.2
94.8
94.6
92.8
101.8
87.9
81.0
101.2
91.3
93.8
75.7
101.6
94.1
88.6
90.9
98.7
92.7
81.6
98.7
48.3
98.8
92.4
67.7
99.3
79.1
87.1
90.4
90.8
101.1
94.5
102.9
93.6
101.9
98.0
85.0
105.0
96.3
89.6
91.6
90.4
87.0
102.2
94.0
84.6
102.2
87.4
101.3
Generation
(BkWh)
Month
0.31
0.75
0.70
0.69
0.91
0.88
0.85
0.79
0.84
0.71
0.67
0.90
0.87
0.92
0.67
0.62
0.88
0.87
0.80
0.65
0.92
0.91
0.60
0.68
0.85
0.84
0.81
0.00
0.67
0.70
0.46
0.66
0.65
0.85
0.00
0.43
0.00
0.59
0.93
0.76
0.77
0.35
0.66
0.67
0.87
0.87
0.88
0.88
0.89
0.89
0.64
0.92
0.49
0.41
0.83
0.73
0.73
0.64
0.65
0.65
0.35
0.61
0.99
1.00
YTD
5.59
7.69
7.35
7.87
9.62
10.23
8.38
9.52
8.31
7.31
8.08
10.36
9.24
9.45
7.19
7.57
10.24
9.32
8.87
9.63
9.82
10.68
5.90
6.36
9.97
8.97
8.31
7.05
8.05
7.40
4.68
6.99
7.66
9.15
3.43
5.05
5.98
6.43
9.51
6.07
9.08
5.92
6.68
7.01
9.05
10.09
9.29
10.14
9.52
10.37
7.47
9.11
5.60
5.39
10.13
7.63
7.49
6.47
7.61
7.10
4.52
7.04
10.07
11.70
Last Refueling Outage
Start
End
Outage
Date
Date
Duration (Days)
9/24/16
12/12/16
80
9/21/15
11/13/15
54
9/24/16
10/21/16
28
9/26/15
10/29/15
34
9/26/16
10/24/16
29
10/5/15
10/23/15
19
10/1/16
11/3/16
34
3/14/15
4/9/15
27
2/20/16
3/27/16
37
2/27/16
3/23/16
26
2/21/15
4/4/15
43
9/14/15
10/2/15
19
4/18/16
5/16/16
29
4/3/16
5/9/16
37
2/15/16
3/10/16
25
2/16/15
3/11/15
24
11/21/15
12/16/15
26
9/10/16
10/8/16
29
5/17/16
5/26/16
10
5/10/15
6/25/15
47
5/2/16
5/31/16
30
10/4/15
11/11/15
39
9/25/16
11/6/16
43
3/26/16
5/9/16
45
10/4/15
11/7/15
35
5/1/16
6/1/16
32
3/23/16
4/27/16
36
10/5/16
1/1/17
89
11/2/15
11/19/15
18
11/1/16
11/16/16
16
10/4/16
10/30/16
27
2/8/16
3/4/16
26
2/9/15
3/10/15
30
9/14/15
11/25/15
73
4/12/15
6/8/15
58
10/19/15
11/6/15
19
2/20/16
3/26/16
36
5/12/15
6/25/15
45
10/15/16
11/9/16
26
3/7/16
6/14/16
100
3/2/15
3/24/15
23
1/15/17
Current
13
10/2/16
11/5/16
35
4/11/16
5/9/16
29
2/15/16
3/8/16
23
2/2/15
2/27/15
26
3/21/16
4/15/16
26
4/13/15
5/5/15
23
3/19/16
4/16/16
29
9/13/15
10/9/15
27
10/4/15
11/6/15
34
4/10/16
5/12/16
33
4/13/15
5/28/15
46
3/16/15
4/9/15
25
4/11/16
5/5/16
25
9/11/16
10/15/16
35
3/6/16
4/10/16
36
11/5/16
11/26/16
22
10/17/15
11/11/15
26
4/23/16
5/15/16
23
9/19/16
10/11/16
23
9/16/15
10/18/15
33
4/9/16
5/14/16
36
10/10/15
11/14/15
36
Capacity Factor
(%)
3
Unit
Palo Verde 3
Peach Bottom 2
Peach Bottom 3
Perry 1
Pilgrim 1
Point Beach 1
Point Beach 2
Prairie Island 1
Prairie Island 2
Quad Cities 1
Quad Cities 2
River Bend 1
Salem 1
Salem 2
Seabrook 1
Sequoyah 1
Sequoyah 2
Shearon Harris 1
South Texas Project 1
South Texas Project 2
St. Lucie 1
St. Lucie 2
Surry 1
Surry 2
Susquehanna 1
Susquehanna 2
Three Mile Island 1
Turkey Point 3
Turkey Point 4
V.C. Summer
Vogtle 1
Vogtle 2
Waterford 3
Watts Bar 1
Watts Bar 2
Wolf Creek 1
Total
Net
MWe
1,312
1,320
1,355
1,240
682
598
598
521
519
908
911
968
1,170
1,158
1,248
1,152
1,126
928
1,280
1,280
981
987
838
838
1,260
1,260
803
802
802
971
1,150
1,152
1,160
1,123
1,122
1,175
100,180
Month
101.4
100.5
98.2
102.5
73.9
100.7
100.9
105.9
107.3
102.9
102.2
101.1
101.0
101.6
100.1
0.0
102.4
104.7
104.2
104.4
102.3
102.8
100.8
104.7
102.8
101.2
64.9
103.9
104.8
102.1
102.8
103.1
101.7
104.0
107.2
104.4
96.2
YTD
90.9
90.4
96.1
95.7
90.4
92.7
100.6
91.9
89.2
101.6
94.4
83.3
68.1
86.2
98.2
75.8
97.0
92.2
98.8
91.6
80.1
99.7
96.6
101.9
79.1
96.4
98.3
101.8
92.9
101.5
101.7
94.7
99.0
95.7
25.0
79.9
91.5
Generation
(BkWh)
Month
0.99
0.99
0.99
0.95
0.37
0.45
0.45
0.41
0.41
0.70
0.69
0.73
0.88
0.88
0.93
0.00
0.86
0.72
0.99
0.99
0.75
0.76
0.63
0.65
0.96
0.95
0.39
0.62
0.63
0.74
0.88
0.88
0.88
0.87
0.90
0.91
71.73
YTD
10.48
10.49
11.43
10.42
5.41
4.87
5.28
4.21
4.07
8.10
7.55
7.08
7.00
8.77
10.76
7.67
9.60
7.51
11.11
10.30
6.90
8.65
7.11
7.50
8.75
10.67
6.93
7.17
6.54
8.66
10.27
9.59
10.08
9.44
2.46
8.25
804.90
Last Refueling Outage
Start
End
Outage
Date
Date
Duration (Days)
10/8/16
11/4/16
28
10/24/16
11/11/16
19
9/21/15
10/21/15
31
3/9/15
4/24/15
47
4/20/15
5/21/15
32
3/12/16
4/4/16
24
10/3/15
10/30/15
28
10/16/16
11/20/16
36
10/17/15
12/3/15
48
3/2/15
3/23/15
22
3/21/16
4/7/16
18
2/23/15
3/27/15
33
4/15/16
7/29/16
106
10/23/15
11/27/15
36
10/1/15
11/13/15
44
11/26/16
12/31/16
36
11/14/15
12/13/15
30
10/10/16
11/9/16
31
10/18/15
12/19/15
63
10/9/16
11/9/16
32
9/26/16
11/7/16
43
9/8/15
10/25/15
48
10/22/16
11/10/16
20
10/19/15
12/10/15
53
3/13/16
4/20/16
39
4/11/15
5/23/15
43
10/30/15
11/24/15
26
10/19/15
12/2/15
45
3/29/16
4/27/16
30
10/3/15
12/1/15
60
9/21/15
10/21/15
31
3/7/16
3/27/16
21
10/25/15
12/15/15
52
9/21/15
10/21/15
31
NA
NA
NA
9/3/16
11/20/16
79
35.7
Notes: Generation estimates are based on Nuclear Regulatory Commission (NRC) Monthly Operating Reports obtained
through the Institute of Nuclear Power Operations and Energy Information Administration (EIA) 923 Form. Capacity figures
from the EIA are the Net Summer Capacities reported in the 860 Form; other capacity figures are from media or company
reports. Capacity factors are estimates based on EIA capacity and generation data, and NRC generation data.
Outage duration and start and end dates are only estimates based on publicly available data from the NRC. Numbers may
vary from published press releases. Outage data current as of January 28, 2017.
Acronyms: B&W – Babcock and Wilcox, CE – Combustion Engineering, W – Westinghouse, PWR – Pressurized Water
Reactor, BWR – Boiling Water Reactor. All BWRs are General Electric.
Nuclear Performance is produced monthly by the Nuclear Energy Institute’s
Policy Development and Public Affairs Division.
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