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About PRIS
PRAIRIE ISLAND-1
Operational
Reactor Details
Reactor Type
Model
Owner
Operator
PWR
WH 2LP (DRYAMB)
Xcel Energy
Northern States Power Co. (subsidiary of Xcel Energy)
Reference Unit Power (Net Capacity)
Design Net Capacity
Gross Capacity
Thermal Capacity
522
MW
e
530
MW
e
566
MW
e
1677
MW
t
Construction Start Date
First Criticality Date
25 Jun, 1968
01 Dec, 1973
First Grid Connection
Commercial Operation Date
04 Dec, 1973
16 Dec, 1973
LifeTime Performance
Electricity Supplied
Energy Availability Factor
Operation Factor
Energy Unavailability Factor
Load Factor
197.91 TW.h
87.8 %
87.9 %
12.2 %
87.3 %
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
1973
7.200
520
312
1974
1452.200
520
3848
43.9
44.0
44.0
31.9
31.9
1975
3694.200
520
7560
86.3
81.2
62.6
81.1
56.5
1976
3268.700
520
6801
77.4
71.6
65.6
71.6
61.5
1977
3714.500
511
7453
85.1
82.9
69.8
83.0
66.8
1978
3810.700
507
8012
91.5
85.9
73.0
85.8
70.6
1979
2910.900
503
6402
73.1
65.8
71.8
66.1
69.8
1980
3105.700
503
6863
78.1
77.8
72.7
70.3
69.9
1981
3838.600
503
7803
89.1
88.9
74.7
87.1
72.0
1982
3918.000
503
7960
90.9
90.9
76.4
88.9
73.8
1983
3888.900
503
7621
87.0
87.2
77.5
88.3
75.3
1984
4159.390
503
8285
94.3
94.3
79.0
94.1
77.0
1985
3678.450
503
7333
83.7
83.4
79.4
83.5
77.5
1986
3819.560
503
7870
89.8
89.6
80.2
86.7
78.2
1987
3590.270
503
7232
82.6
82.2
80.3
81.5
78.4
1988
3823.390
503
7800
88.8
89.3
80.9
86.5
79.0
1989
4392.280
503
8737
99.7
99.8
82.1
99.7
80.3
1990
3829.680
503
7764
88.6
81.7
82.0
86.9
80.6
1991
3987.080
503
7943
90.7
90.5
82.5
90.1
81.2
1992
3497.780
503
6844
77.9
77.4
82.2
79.2
81.1
1993
4377.990
513
8480
96.8
96.8
83.0
98.9
82.0
1994
3718.200
513
7258
82.8
82.8
83.0
82.7
82.0
1995
4519.040
513
8752
99.9
99.9
83.8
100.6
82.8
1996
3741.650
513
7327
83.4
92.2
84.1
83.0
82.8
1997
3522.800
513
6965
79.5
79.5
83.9
78.4
82.7
1998
4209.160
526
7948
90.7
90.8
84.2
93.5
83.1
1999
4068.780
522
7643
87.2
87.2
84.3
89.0
83.3
2000
4536.510
522
8499
96.8
96.7
84.8
98.9
83.9
2001
3641.740
522
6890
78.6
78.8
84.6
79.6
83.8
2002
4373.230
522
8268
94.4
94.4
84.9
95.6
84.2
2003
4596.350
522
8619
98.4
98.4
85.4
101.0
84.8
2004
3602.140
522
7017
79.9
79.9
85.2
78.6
84.6
2005
4518.400
522
8465
96.6
96.7
85.6
98.8
85.0
2006
4103.240
523
7785
88.9
88.9
85.7
89.6
85.2
2007
4457.090
551
8472
96.7
96.7
86.0
92.3
85.4
2008
4059.450
551
7780
88.6
88.6
86.1
83.9
85.3
2009
3600.150
551
6923
79.0
79.0
85.9
74.6
85.0
2010
4654.860
560
8760
100.0
100.0
86.3
96.0
85.3
2011
4128.390
521
7717
88.1
87.7
86.3
87.2
85.4
2012
3705.980
522
6961
79.2
79.3
86.1
80.8
85.3
2013
4654.690
522
8732
99.7
99.7
86.5
101.8
85.7
2014
3812.460
522
7264
82.9
82.9
86.4
83.4
85.6
2015
3991.220
522
7539
86.1
86.1
86.4
87.3
85.7
2016
4207.700
522
7903
90.0
90.0
86.5
91.8
85.8
2017
4565.000
522
8689
99.2
99.2
86.8
99.8
86.1
2018
4190.470
522
7916
90.4
90.4
86.8
91.6
86.2
2019
4772.560
522
8760
100.0
100.0
87.1
104.4
86.6
2020
4337.580
522
8092
92.1
91.0
87.2
94.6
86.8
2021
4772.370
522
8760
100.0
100.0
87.5
104.4
87.2
2022
4368.700
522
8137
92.9
92.9
87.6
95.5
87.4
2023
3780.990
522
6994
79.8
99.5
87.8
82.7
87.3
Performance indicators are calculated from the Commercial Operation Date.
Above data generated by the PRIS database. Last update on 2024-10-03
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ANO-1
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BEAVER VALLEY-1
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BIG ROCK POINT
BONUS
BRAIDWOOD-1
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BROWNS FERRY-3
BRUNSWICK-1
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BYRON-1
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CLINTON-1
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COOK-1
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COOPER
CRYSTAL RIVER-3
CVTR
DAVIS BESSE-1
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DRESDEN-3
DUANE ARNOLD-1
ELK RIVER
FARLEY-1
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FERMI-1
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FITZPATRICK
FORT CALHOUN-1
FORT ST. VRAIN
GE VALLECITOS
GINNA
GRAND GULF-1
HADDAM NECK
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HARRIS-1
HATCH-1
HATCH-2
HOPE CREEK-1
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INDIAN POINT-1
INDIAN POINT-2
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KEWAUNEE
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LASALLE-1
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LIMERICK-1
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MAINE YANKEE
MCGUIRE-1
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MONTICELLO
NINE MILE POINT-1
NINE MILE POINT-2
NORTH ANNA-1
NORTH ANNA-2
OCONEE-1
OCONEE-2
OCONEE-3
OYSTER CREEK
PALISADES
PALO VERDE-1
PALO VERDE-2
PALO VERDE-3
PATHFINDER
PEACH BOTTOM-1
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PERRY-1
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PIQUA
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PRAIRIE ISLAND-1
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QUAD CITIES-1
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RANCHO SECO-1
RIVER BEND-1
ROBINSON-2
SALEM-1
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SUMMER-1
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VOGTLE-1
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VOGTLE-3
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WATERFORD-3
WATTS BAR-1
WATTS BAR-2
WOLF CREEK
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ZION-1
ZION-2