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ONAGAWA-1
Permanent Shutdown
Reactor Details
Reactor Type
Model
Owner
Operator
BWR
BWR-4
Tohoku Electric Power Co., Inc
Tohoku Electric Power Co., Inc
Reference Unit Power (Net Capacity)
Design Net Capacity
Gross Capacity
Thermal Capacity
498
MW
e
498
MW
e
524
MW
e
1593
MW
t
Construction Start Date
First Criticality Date
08 Jul, 1980
18 Oct, 1983
First Grid Connection
Commercial Operation Date
18 Nov, 1983
01 Jun, 1984
Permanent Shutdown Date
21 Dec, 2018
LifeTime Performance
Electricity Supplied
Energy Availability Factor
Operation Factor
Energy Unavailability Factor
Load Factor
81.76 TW.h
52.0 %
52.6 %
48.0 %
52.2 %
Lifetime performance calculated up to year
2018
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
1983
100.600
498
766
1984
3558.210
496
7683
100.0
98.9
98.9
98.9
98.9
1985
3259.150
496
6681
76.3
75.6
84.2
75.0
83.8
1986
3366.580
496
6871
78.4
78.0
81.8
77.5
81.4
1987
3161.720
497
6500
74.2
72.8
79.3
72.6
78.9
1988
3410.620
496
6949
79.1
78.6
79.1
78.3
78.8
1989
3013.730
497
6177
70.5
69.1
77.3
69.2
77.1
1990
2850.660
497
5908
67.4
65.6
75.5
65.5
75.3
1991
3345.910
497
6954
79.4
77.0
75.7
76.8
75.5
1992
4120.530
497
8342
95.0
94.7
78.0
94.4
77.7
1993
2300.080
497
4666
53.3
50.6
75.1
52.8
75.1
1994
3428.820
497
6961
79.5
78.6
75.4
78.8
75.5
1995
2936.390
497
6000
68.5
67.8
74.8
67.4
74.8
1996
3727.170
498
7523
85.6
85.6
75.6
85.2
75.6
1997
3304.640
498
6708
76.6
76.2
75.7
75.8
75.6
1998
3359.530
498
6841
78.1
76.9
75.8
77.0
75.7
1999
4240.190
498
8517
97.2
97.2
77.1
97.2
77.1
2000
3689.110
498
7436
84.6
84.6
77.6
84.3
77.5
2001
3425.110
498
6873
78.5
78.4
77.6
78.5
77.6
2002
3143.170
498
6001
68.5
68.5
77.1
72.0
77.3
2003
1856.080
498
3725
42.5
42.6
75.4
42.6
75.5
2004
2998.900
498
6020
68.5
68.5
75.0
68.6
75.2
2005
1898.590
498
3799
43.4
43.1
73.6
43.5
73.7
2006
0.000
498
0
0.0
0.0
70.3
0.0
70.4
2007
2162.180
498
4351
49.7
49.3
69.4
49.6
69.6
2008
530.820
498
1057
12.0
12.0
67.1
12.1
67.2
2009
3117.350
498
6531
74.6
71.3
67.2
71.5
67.4
2010
2661.130
498
5338
60.9
60.2
67.0
61.0
67.1
2011
851.440
498
1671
19.1
19.1
65.2
19.5
65.4
2012
0.000
498
0
0.0
0.0
62.9
0.0
63.1
2013
0.000
498
0
0.0
0.0
60.8
0.0
61.0
2014
0.000
498
0
0.0
0.0
58.8
0.0
59.0
2015
0.000
498
0
0.0
0.0
57.0
0.0
57.1
2016
0.000
498
0
0.0
0.0
55.2
0.0
55.4
2017
0.000
498
0
0.0
0.0
53.6
0.0
53.7
2018
0.000
498
0
0.0
0.0
52.0
0.0
52.2
Performance indicators are calculated from the Commercial Operation Date.
Above data generated by the PRIS database. Last update on 2025-03-22
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