There are currently 436 nuclear power reactors around the world. The breakdown of the distribution by country is shown in the table below. Aside from the United States, a few other countries with large numbers of nuclear reactors are France, Russia, China, Japan, and Korea—each of these nations has at least twenty nuclear reactors currently in operation.
| Country |
Number of Active Reactors |
Number under Construction |
| Argentina |
2 |
1 |
| Armenia |
1 |
|
| Belgium |
7 |
|
| Brazil |
2 |
1 |
| Bulgaria |
2 |
|
| Canada |
19 |
|
| China |
19 |
29 |
| Finland |
4 |
1 |
| France |
58 |
1 |
| Germany |
9 |
|
| Hungary |
4 |
|
| India |
20 |
7 |
| Iran |
1 |
|
| Japan |
50 |
3 |
| Mexico |
2 |
|
| Netherlands |
1 |
|
| Pakistan |
3 |
2 |
| Romania |
2 |
|
| Russian Federation |
33 |
11 |
| Slovakia |
4 |
2 |
| Slovenia |
1 |
|
| South Africa |
2 |
|
| South Korea |
23 |
3 |
| Spain |
8 |
|
| Sweden |
10 |
|
| Switzerland |
5 |
|
| Taiwan |
6 |
2 |
| Ukraine |
15 |
2 |
| United Arab Emirates |
|
1 |
| United Kingdom |
16 |
|
| United States of America |
104 |
1 |
