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About PRIS
ANO-1
(Arkansas Nuclear One, Unit 1)
Operational
Reactor Details
Reactor Type
Model
Owner
Operator
PWR
B&W LLP (DRYAMB)
ENTERGY ARKANSAS, INC.
Entergy Nuclear Operations, Inc.
Reference Unit Power (Net Capacity)
Design Net Capacity
Gross Capacity
Thermal Capacity
836
MW
e
850
MW
e
903
MW
e
2568
MW
t
Construction Start Date
First Criticality Date
01 Oct, 1968
06 Aug, 1974
First Grid Connection
Commercial Operation Date
17 Aug, 1974
19 Dec, 1974
LifeTime Performance
Electricity Supplied
Energy Availability Factor
Operation Factor
Energy Unavailability Factor
Load Factor
275.79 TW.h
81.5 %
82.0 %
18.5 %
78.4 %
Lifetime performance calculated up to year
2022
Operating History
Year
Electricity Supplied
[GW.h]
Reference Unit Power
[MW]
Annual Time On Line
[h]
Operation Factor
[%]
Energy Availability Factor
[%]
Load Factor
[%]
Annual
Cumulative
Annual
Cumulative
1974
Data from a trial operation not provided
1975
4898.400
797
6661
76.0
67.7
67.7
70.2
70.2
1976
3888.000
836
4966
56.5
53.0
60.2
53.0
61.3
1977
5103.100
836
6688
76.4
69.7
63.4
69.7
64.2
1978
5249.800
836
6676
76.2
71.7
65.5
71.7
66.1
1979
3323.400
836
4253
48.6
45.4
61.4
45.4
61.9
1980
3781.200
836
5570
63.4
63.7
61.8
51.5
60.1
1981
4900.800
836
6336
72.3
72.6
63.4
66.9
61.1
1982
3721.400
836
5671
64.7
64.8
63.5
50.8
59.8
1983
3220.600
836
4191
47.8
48.3
61.8
44.0
58.0
1984
4604.130
836
6150
70.0
70.1
62.7
62.7
58.5
1985
5190.350
836
6852
78.2
78.2
64.1
70.9
59.6
1986
3589.930
836
5446
62.2
62.2
63.9
49.0
58.8
1987
4763.340
836
7720
88.1
88.2
65.8
65.0
59.2
1988
3963.240
836
5996
68.3
68.3
66.0
54.0
58.9
1989
3377.000
836
5871
67.0
67.1
66.0
46.1
58.0
1990
4145.800
836
6437
73.5
75.9
66.7
56.6
57.9
1991
6540.510
836
7991
91.2
91.3
68.1
89.3
59.8
1992
5833.140
836
7088
80.7
80.7
68.8
79.4
60.9
1993
6126.550
836
7520
85.8
85.9
69.7
83.7
62.1
1994
7198.560
836
8643
98.7
98.7
71.2
98.3
63.9
1995
5978.220
836
7493
85.5
85.6
71.8
81.6
64.7
1996
6287.020
836
7613
86.7
86.7
72.5
85.6
65.7
1997
7251.100
836
8723
99.6
99.6
73.7
99.0
67.1
1998
6216.850
836
7364
84.1
84.1
74.1
84.9
67.9
1999
6714.720
836
7907
90.3
90.3
74.8
91.7
68.8
2000
6410.140
836
7748
88.2
88.2
75.3
87.3
69.5
2001
6875.470
836
8100
92.5
91.8
75.9
93.9
70.4
2002
6568.630
836
7820
89.3
89.2
76.4
89.7
71.1
2003
6794.300
836
8050
91.9
91.8
76.9
92.8
71.9
2004
6827.580
836
8045
91.6
91.6
77.4
93.0
72.6
2005
5743.240
840
6778
77.4
77.4
77.4
78.0
72.8
2006
7474.870
836
8760
100.0
100.0
78.1
102.1
73.7
2007
6882.810
843
8122
92.7
92.8
78.6
93.2
74.3
2008
6124.050
843
7558
86.0
86.1
78.8
82.7
74.5
2009
7302.100
842
8595
98.1
98.1
79.4
99.0
75.2
2010
6607.090
842
7883
90.0
90.0
79.6
89.6
75.6
2011
6395.490
842
7872
89.9
89.9
79.9
86.7
75.9
2012
7436.060
842
8784
100.0
100.0
80.5
100.5
76.6
2013
4448.740
836
5415
61.8
61.8
80.0
60.7
76.2
2014
7180.530
836
8760
100.0
100.0
80.5
98.0
76.7
2015
6528.760
836
7832
89.4
89.4
80.7
89.2
77.0
2016
5681.140
836
6821
77.6
77.6
80.6
77.4
77.0
2017
6883.540
836
8193
93.5
93.5
80.9
94.0
77.4
2018
5647.030
836
6966
79.5
79.5
80.9
77.1
77.4
2019
6447.650
836
7644
87.3
87.3
81.0
88.0
77.7
2020
7436.380
836
8783
100.0
100.0
81.4
101.3
78.2
2021
6553.940
836
7897
90.2
90.2
81.6
89.5
78.4
2022
5552.650
836
6753
77.1
77.1
81.5
75.8
78.4
Performance indicators are calculated from the Commercial Operation Date.
Above data generated by the PRIS database. Last update on 2023-06-01
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LASALLE-1
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LIMERICK-1
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PATHFINDER
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POINT BEACH-1
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RIVER BEND-1
ROBINSON-2
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SAXTON
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VOGTLE-1
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