As of September 2026, there is a total of 162 nuclear power reactors with an installed electric net capacity of 148,392 MWe in operation in Europe (six thereof in the Asian part of the Russian Federation), and 11 units with an electric net capacity of 11,610 MWe were under construction in four countries.

 

Country

in operation

under construction

number

net capacity MWe

number

net capacity MWe

Belarus

2

2.220

–

–

Belgium

2

2.056

–
–
Bulgaria

2

2.006

–

–

Czech Republic

6

3.972

–
–
Finland

5

4.369

–

–

France

57

63.000

–

–

Hungary

4

1.916

1
1.185
Netherlands

1

482

–
–
Romania

2

1.300

–

–

Russia

34

27.969

5

4.655

Slovakia

5

2.306

1

440

Slovenia

1

696

–
–
Spain

7

7.123

–
–
Sweden

6

7.014

–
–
Switzerland

4

2.973

–
–
Ukraine

15

13.107

2

2.070

United Kingdom

9

5.883

2

3.260

total

162

148.392

11

11.610

Nuclear power plant units in Europe, in operation and under construction (Last update – 14th September 2026)

In terms of electricity globally generated by nuclear energy in 2025, France holds the top position with a share of 68.1%, followed by Slovakia (64.4%) and Hungary (45.2%), then Czech Republic (42.1%).

 

Nuclear Power Reactors in Operation in Europe, 14th September 2026