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Unit Capability Factor
Includes all reactors that were in commercial operation within
2021
and
2023
Country
2021
2022
2023
2021
-
2023
Number of Reactors
UCF
[%]
Number of Reactors
UCF
[%]
Number of Reactors
UCF
[%]
Number of Reactors
UCF
[%]
ARGENTINA
3
70.9
3
52.8
3
63.3
3
62.3
ARMENIA
1
51.6
1
72.9
1
70.2
1
64.8
BELARUS
1
58.8
1
45.4
2
81.0
2
63.3
BELGIUM
7
92.7
7
85.4
6
90.1
7
89.4
BRAZIL
2
83.7
2
83.0
2
82.7
2
83.1
BULGARIA
2
89.0
2
88.2
2
87.7
2
88.3
CANADA
19
72.7
19
68.1
19
69.7
19
70.2
CHINA
51
91.4
53
90.3
55
89.8
55
90.5
CZECH REPUBLIC
6
85.1
6
85.3
6
83.9
6
84.8
FINLAND
4
93.2
4
92.1
5
93.9
5
93.2
FRANCE
56
72.7
56
58.1
56
67.3
56
66.0
GERMANY
6
95.6
3
95.4
3
88.1
6
95.0
HUNGARY
4
90.2
4
89.4
4
90.0
4
89.9
INDIA
18
81.3
18
85.6
19
84.6
19
83.8
IRAN, ISLAMIC REPUBLIC OF
1
70.6
1
92.5
1
75.3
1
79.5
JAPAN
10
70.8
10
59.6
12
84.7
12
71.9
KOREA, REPUBLIC OF
24
74.9
25
81.7
25
80.2
25
79.0
MEXICO
2
85.8
2
79.3
2
90.2
2
85.1
NETHERLANDS, KINGDOM OF THE
1
86.4
1
94.1
1
90.1
1
90.2
PAKISTAN
6
92.4
6
86.8
6
84.5
7
87.2
ROMANIA
2
92.2
2
91.4
2
92.5
2
92.0
RUSSIA
38
83.8
37
85.6
37
83.1
38
84.2
SLOVAKIA
4
91.6
4
92.6
4
94.0
4
92.8
SLOVENIA
1
90.2
1
89.1
1
87.8
1
89.0
SOUTH AFRICA
2
75.3
2
64.1
2
50.3
2
63.2
SPAIN
7
88.6
7
91.4
7
89.8
7
89.9
SWEDEN
6
86.2
6
84.2
6
79.8
6
83.4
SWITZERLAND
4
72.4
4
90.5
4
91.1
4
84.7
UKRAINE
15
73.8
UNITED ARAB EMIRATES
1
86.0
2
82.6
3
91.2
3
87.6
UNITED KINGDOM
15
59.4
11
78.0
9
73.0
15
69.1
UNITED STATES OF AMERICA
93
92.7
92
93.1
93
94.1
94
93.3
Total
416
83.5
395
81.7
401
83.9
415
83.2
The following information is included in the totals:
TAIWAN, CHINA
4
80.5
3
92.4
3
94.1
4
87.6
Above data generated by the PRIS database. Last update on 2025-05-17
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LAST THREE YEAR FACTORS
Energy Availability
Unit Capability
Unplanned Capability Loss
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Energy Availability
Unit Capability
Unplanned Capability Loss
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Energy Availability
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