The plant is composed of two, two-loop Westinghousepressurized water reactors. There is also a visitors' center located just south of the administration building.
Construction for Unit 1 began in 1966 and it was placed into commercial operation in December 1970. Unit 2 was placed into commercial operation in September 1972. The plant was built for a total cost of $114.9 million ($844 million, 2023 USD).[3]
The entire site covers 1,050 acres; approximately 70 acres are used for the nuclear power plant and transmission yard infrastructure and the remaining land used for agriculture or solar arrays.[4]
History
The original letter of intent to purchase a single 454 megawatt (MW) nuclear unit from Westinghouse Electric Company for a fixed-price was issued by Wisconsin Electric and Wisconsin Michigan Power Company (a Wisconsin Electric subsidiary)[5] on December 30, 1965. The right was reserved to order a second, duplicate unit under the same terms. In May, 1966, the announcement was made that the plant would be built on a 1,200-acre site in the town of Two Creeks.
On November 28, 1966, following Public Service Commission of Wisconsin (PSCW) endorsement and a brief public hearing, Alfred Gruhl, Glenn Reed, and Sol Burstein[6] turned the first symbolic spades of dirt for the official ground-breaking. In May, 1967, the Atomic Energy Commission (AEC), predecessor to the Nuclear Regulatory Commission (NRC), issued the official construction permit (number 32) for Point Beach Unit 1. The Unit 2 construction permit (number 47) was issued approximately a year later.[6]
On October 5, 1970, the AEC issued its full-term, full-power Operating License (DPR-24) for Point Beach Unit 1. The loading fuel into the reactor commenced almost immediately. On November 2, 1970, operators achieved initial criticality, with the nuclear-powered electricity being produced four days later, on November 6. Full commercial service was reached on December 21, 1970, just 49 months from the initial groundbreaking ceremony. After delays from nuclear power opponents, Unit 2 was granted a full-term, full-power operating license (DPR-27) on March 8, 1973, almost 1+1⁄2 years behind the original schedule.[6]
Due to steam generator tube degradation and failures caused by intergranular stress corrosion cracking, Unit 1 was operated at approximately 75-80% of full power from December 1979 until October 1983, when replacement steam generators were installed.[7] The Unit 2 steam generators were replaced in 1996–1997.[8]
In 2005, the NRC approved the initial license renewal application for the Point Beach plant, extending the operating license from forty years to sixty.[9][10] in 2011, the NRC approved a 17% increase in power output (a.k.a. extended power uprate) from both units. This entailed significant upgrades to several plant systems and components, including safety-related pumps and valves, as well as the turbine-generator sets.[11]
Owners submitted applications for subsequent license extension (60 years to 80 years) for both reactors to the NRC in November 2020. The decision announcement was expected in July 2022, however this was delayed as the NRC required additional environmental impact evaluation be completed. A NRC public meeting was held on February 17, 2021 to solicit public comments on the scope of the environmental review.
Most of the power from this plant goes to the Green Bay area and communities along the Lake Michigan shoreline of Southeastern Wisconsin. The plant is connected to the grid by four 345 kV lines, one of which travels northwest towards Green Bay and then on to the We Energies North Appleton substation located about 12 miles north of Appleton, Wisconsin, and the other one interconnecting with the now-closed[13]Kewaunee Nuclear Generating Station located a short distance away to the north from Point Beach. The other 345 kV lines going out of the plant go south towards Milwaukee. Several 138 kV lines going out of the plant supply electricity to the surrounding area.
In November 2020, construction of the nearby 150 MW Two Creeks Solar Park was completed, at a cost of $195 million. The solar farm is located several miles southwest of the nuclear plant.
Electricity generation
Point Beach generated 10,077 GWh in 2022, 16.5% of all electricity produced in Wisconsin.
Generation (MWh) Point Beach Power Plant[14] (Nuclear Only)[15]
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Total (Annual)
2001
747,957
634,093
750,906
433,802
562,905
693,537
728,365
707,943
569,003
742,015
734,847
739,695
8,045,068
2002
751,028
624,538
753,521
505,585
574,254
730,869
746,848
751,595
520,408
532,423
734,354
754,656
7,980,079
2003
753,611
689,821
765,308
682,667
743,000
735,053
587,460
755,886
690,771
405,146
479,990
767,623
8,056,336
2004
768,940
714,409
760,799
395,417
323,118
620,125
759,345
763,343
738,197
734,412
668,786
767,076
8,013,967
2005
766,668
687,003
765,872
379,312
378,941
366,707
588,370
753,784
646,520
384,587
436,960
718,979
6,873,703
2006
767,529
692,841
761,705
744,257
763,705
736,477
763,706
745,747
731,483
556,789
527,817
768,360
8,560,416
2007
765,914
694,126
765,807
370,255
668,624
576,726
758,404
747,943
656,843
764,043
750,088
765,740
8,284,513
2008
580,167
667,760
770,034
426,997
597,286
738,617
759,633
741,942
728,096
427,927
566,303
762,453
7,767,215
2009
763,248
691,021
765,343
742,080
696,917
736,501
757,545
758,499
714,270
543,595
327,645
671,169
8,167,833
2010
764,991
687,983
380,308
689,603
767,038
633,399
699,236
746,163
742,782
764,896
749,905
664,381
8,290,685
2011
769,544
694,377
381,450
367,461
377,870
444,345
825,187
813,999
795,349
469,283
434,287
591,874
6,965,026
2012
885,774
829,858
881,358
804,487
895,831
817,735
823,428
818,423
830,321
888,894
430,848
876,746
9,783,703
2013
888,923
803,648
686,951
577,038
892,324
865,249
889,843
849,959
855,549
894,609
866,060
871,562
9,941,715
2014
894,014
807,255
647,855
551,744
878,772
862,226
892,854
854,574
863,958
484,812
846,101
862,931
9,447,096
2015
894,261
807,599
889,908
865,194
894,308
862,785
890,823
886,946
848,182
471,374
826,112
870,691
10,008,183
2016
896,413
838,689
599,550
771,742
895,263
862,524
890,714
879,818
859,221
891,601
869,130
896,729
10,151,394
2017
896,822
809,449
680,478
604,968
899,032
869,363
884,636
880,360
848,354
522,531
852,038
900,948
9,648,979
2018
900,095
811,599
897,070
867,179
897,537
864,881
892,088
883,172
851,052
565,516
873,212
825,721
10,129,122
2019
891,565
799,500
754,943
569,831
858,658
867,739
896,065
858,088
866,670
896,614
873,465
897,167
10,030,305
2020
896,579
838,452
621,646
776,698
899,562
868,122
887,222
887,469
863,889
490,510
844,423
896,761
9,771,333
2021
894,739
802,967
892,180
852,662
898,669
865,696
876,100
822,904
828,038
532,678
805,580
897,977
9,970,190
2022
896,422
809,933
782,184
534,981
897,835
868,658
891,034
880,963
852,915
893,605
871,077
897,411
10,077,018
2023
896,138
800,625
569,821
787,181
897,143
857,775
883,965
878,340
847,220
521,677
845,414
897,468
9,682,767
2024
894,969
836,930
896,880
868,750
Wisconsin electricity generation by fuel type[16] (GWh)
Source
Year
% of 2017
Total
% of 2021
Total
2017
2018
2019
2020
2021
Coal
35,437
32,933
26,003
23,490
27,233
55.9
43.5
Petroleum oil
32
35
52
18
162
0.1
0.3
Petroleum coke
111
101
90
86
154
0.2
0.2
Natural gas
13,110
16,067
19,514
21,098
20,369
20.7
32.5
Nuclear
9,649
10,129
10,030
9,771
9,970
15.2
15.9
Hydroelectric
2,489
2,251
2,527
2,661
2,023
3.9
3.2
Wind
1,633
1,611
1,849
1,735
1,566
2.6
2.5
Utility-scale solar
21
35
36
90
363
0.0
0.6
Biomass
842
816
764
686
721
1.3
1.2
Other
17
17
21
20
23
0.0
0.0
Total generation
63,341
63,995
60,886
59,655
62,584
Surrounding population
The Nuclear Regulatory Commission defines two emergency planning zones around nuclear power plants: a plume exposure pathway zone with a radius of 10 miles (16 km), concerned primarily with exposure to, and inhalation of, airborne radioactive contamination, and an ingestion pathway zone of about 50 miles (80 km), concerned primarily with ingestion of food and liquid contaminated by radioactivity.[17]
The 2010 U.S. population within 10 miles (16 km) of Point Beach was 19,975, a decrease of 6.7 percent in a decade, according to an analysis of U.S. Census data for msnbc.com. The 2010 U.S. population within 50 miles (80 km) was 777,556, an increase of 10.0 percent since 2000. Cities within 50 miles include Green Bay (28 miles to city center).[18]
Seismic risk
The Nuclear Regulatory Commission's estimate of the risk each year of an earthquake intense enough to cause core damage to the reactor at Point Beach was 1 in 90,909, according to an NRC study published in August 2010. This was tied for 62 in a list of 104 with #1 being most at risk.[19][20]