Skip to content
Skip to navigation
Contact Us
IAEA.org
NUCLEUS
World Statistics
Country Statistics
Publications
Glossary
About PRIS
Close
More info:
 
Unplanned Capability Loss Factor
Includes all reactors that were in commercial operation within
2022
and
2024
Country
2022
2023
2024
2022
-
2024
Number of Reactors
UCL
[%]
Number of Reactors
UCL
[%]
Number of Reactors
UCL
[%]
Number of Reactors
UCL
[%]
ARGENTINA
3
21.8
3
1.9
3
2.2
3
8.6
ARMENIA
1
4.2
1
7.4
1
1.1
1
4.2
BELARUS
1
33.9
2
2.2
2
8.6
2
12.9
BELGIUM
7
6.8
6
1.9
5
4.8
7
4.8
BRAZIL
2
4.7
2
4.9
2
2.3
2
4.0
BULGARIA
2
1.1
2
0.0
2
0.0
2
0.4
CANADA
19
2.9
19
1.6
19
4.6
19
3.0
CHINA
53
0.5
55
0.4
56
0.4
56
0.4
CZECH REPUBLIC
6
0.8
6
0.9
6
2.8
6
1.5
FINLAND
4
1.6
5
2.6
5
9.0
5
4.9
FRANCE
56
22.5
56
15.1
56
8.0
56
15.2
GERMANY
3
0.2
3
0.0
3
0.1
HUNGARY
4
2.9
4
1.2
4
1.2
4
1.8
INDIA
18
2.5
19
4.4
20
4.6
20
3.8
IRAN, ISLAMIC REPUBLIC OF
1
0.6
1
0.3
1
2.8
1
1.2
JAPAN
10
1.1
12
1.3
14
1.3
14
1.2
KOREA, REPUBLIC OF
25
2.2
25
2.1
26
2.2
26
2.2
MEXICO
2
7.4
2
1.5
2
2.6
2
3.8
NETHERLANDS, KINGDOM OF THE
1
0.0
1
3.6
1
6.0
1
3.2
PAKISTAN
6
5.6
6
3.3
6
2.7
6
3.8
ROMANIA
2
1.2
2
1.2
2
1.6
2
1.3
RUSSIA
37
1.8
37
3.3
37
2.8
37
2.6
SLOVAKIA
4
0.9
4
0.3
4
3.2
4
1.5
SLOVENIA
1
1.6
1
8.1
1
0.3
1
3.3
SOUTH AFRICA
2
11.3
2
4.8
2
2.2
2
6.1
SPAIN
7
2.3
7
2.3
7
3.6
7
2.7
SWEDEN
6
8.2
6
8.6
6
4.8
6
7.2
SWITZERLAND
4
0.4
4
0.6
4
1.7
4
0.9
UNITED ARAB EMIRATES
2
5.0
3
0.0
4
1.5
4
1.8
UNITED KINGDOM
11
7.9
9
8.0
9
13.1
11
9.6
UNITED STATES OF AMERICA
92
0.7
93
0.4
94
1.4
94
0.8
Total
395
5.6
401
3.9
403
3.2
411
4.2
The following information is included in the totals:
TAIWAN, CHINA
3
0.0
3
0.4
2
1.1
3
0.4
Above data generated by the PRIS database. Last update on 2025-07-18
Previous
(LAST THREE YEAR FACTORS Unit Capability)
(LIFETIME FACTORS Energy Availability)
Next
STATUS REPORTS
In Operation & Suspended Operation
Under Construction
Permanent Shutdown
LAST THREE YEAR FACTORS
Energy Availability
Unit Capability
Unplanned Capability Loss
LIFETIME FACTORS
Energy Availability
Unit Capability
Unplanned Capability Loss
TREND REPORTS
Nuclear Power Capacity
Energy Availability
Unit Capability
Unplanned Capability Loss
Load Factor
Electricity Supplied
MISCELLANEOUS Reports
Nuclear Share
Age Distribution