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 MWeMegawatt electric; electric output of a power plant in megaw... |
number |
net capacity MWeMegawatt electric; electric output of a power plant in megaw... |
|
| 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 plantThermal power plant, primarily used for electricity generati... 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
