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MILLSTONE-3
Operational
Reactor Details
Reactor Type
Model
Owner
Operator
PWR
WH 4LP (DRYSUB)
Dominion Resources, Inc.
Dominion Energy
Reference Unit Power (Net Capacity)
Design Net Capacity
Gross Capacity
Thermal Capacity
1210
MW
e
1159
MW
e
1280
MW
e
3650
MW
t
Construction Start Date
First Criticality Date
09 Aug, 1974
23 Jan, 1986
First Grid Connection
Commercial Operation Date
12 Feb, 1986
23 Apr, 1986
LifeTime Performance
Electricity Supplied
Energy Availability Factor
Operation Factor
Energy Unavailability Factor
Load Factor
310.53 TW.h
81.9 %
81.0 %
18.1 %
80.4 %
Lifetime performance calculated up to year
2023
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
1986
Data Not Provided
1987
6748.200
1142
6235
71.2
71.4
71.4
67.5
67.5
1988
7683.620
1142
6954
79.2
79.5
75.4
76.6
72.0
1989
7082.600
1142
6636
75.8
75.9
75.6
70.8
71.6
1990
8218.240
1137
7798
89.0
89.2
79.0
82.5
74.3
1991
2876.710
1137
2850
32.5
33.6
69.9
28.9
65.3
1992
6593.810
1137
6311
71.8
72.1
70.3
66.0
65.4
1993
6502.830
1137
6106
69.7
70.2
70.3
65.3
65.4
1994
9416.150
1137
8426
96.2
96.3
73.5
94.5
69.0
1995
7993.620
1137
7083
80.9
81.2
74.4
80.3
70.3
1996
2476.710
1137
2156
24.5
25.7
69.5
24.8
65.7
1997
0.000
1137
0
0.0
0.0
63.2
0.0
59.8
1998
3392.060
1137
3402
38.8
38.9
61.2
34.1
57.6
1999
8307.550
1140
7329
83.7
83.7
62.9
83.2
59.6
2000
10125.720
1154
8784
100.0
100.0
65.6
100.1
62.5
2001
8169.690
1136
7392
84.4
84.3
66.8
81.4
63.8
2002
8746.210
1130
7803
89.1
89.0
68.2
88.1
65.3
2003
10005.700
1130
8729
99.6
99.6
70.0
101.1
67.4
2004
8983.700
1148
7905
90.0
90.1
71.2
89.9
68.6
2005
8766.990
1131
7677
87.6
87.6
72.0
88.5
69.7
2006
10111.100
1155
8760
100.0
100.0
73.4
99.9
71.2
2007
8699.380
1145
7694
87.8
87.7
74.1
86.7
71.9
2008
8850.300
1145
7739
88.1
88.1
74.8
88.0
72.7
2009
10418.220
1137
8470
96.7
96.7
75.7
104.6
74.1
2010
9335.740
1233
7623
87.0
88.0
76.3
86.4
74.6
2011
9365.730
1233
7674
87.6
87.6
76.8
86.7
75.1
2012
10776.490
1218
8784
100.0
100.0
77.7
100.7
76.2
2013
9542.430
1210
7803
89.1
89.0
78.1
89.9
76.7
2014
9360.530
1218
7676
87.6
90.0
78.6
87.7
77.1
2015
10677.970
1229
8760
100.0
100.0
79.4
99.2
77.9
2016
9140.320
1229
7539
85.8
85.8
79.6
84.7
78.2
2017
9740.290
1229
7972
91.0
91.0
80.0
90.5
78.6
2018
10758.280
1210
8760
100.0
100.0
80.6
101.5
79.3
2019
9516.620
1210
7834
89.4
89.4
80.9
89.8
79.7
2020
9024.350
1210
7438
84.7
85.1
81.0
84.9
79.8
2021
10265.200
1210
8459
96.6
96.6
81.5
96.8
80.3
2022
9046.540
1210
7380
84.2
91.9
81.8
85.4
80.5
2023
8234.860
1210
6827
77.9
85.8
81.9
77.7
80.4
Performance indicators are calculated from the Commercial Operation Date.
Above data generated by the PRIS database. Last update on 2025-02-15
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