This is a list of all the commercial nuclear reactors in the world, sorted by country, with operational status. The list only includes civilian nuclear power reactors used to generate electricity for a power grid. All commercial nuclear reactors use nuclear fission. As of May 2025, there are 439 operable power reactors in the world, with a combined electrical capacity of 397.7 GW. Additionally, there are 68 reactors under construction and 108 reactors planned, with a combined capacity of 74 GW and 103 GW, respectively, while 359 more reactors are proposed. For non-power reactors, see List of nuclear research reactors. For fuel plants see List of nuclear reprocessing plants. Where not otherwise specified, all information is sourced from the Power Reactor Information System (PRIS) of the International Atomic Energy Agency (IAEA). In the following tables, the capacity (expressed in megawatt, MW) refers to the net capacity, or the maximum electricity output under reference ambient conditions, after deducting the losses within the system including the energy transformers.
Argentina
Armenia
Austria
Bangladesh
Belarus
Belgium
Brazil
Bulgaria
Canada
China
Cuba
Czech Republic
Egypt
Finland
France
Germany
Hungary
India
Iran
Italy
Japan
Kazakhstan
Lithuania
Mexico
Netherlands
North Korea
Pakistan
Philippines
Poland
Romania
Russia
Slovakia
Slovenia
South Africa
South Korea
Spain
Sweden
Switzerland
Taiwan
Turkey
Ukraine
United Arab Emirates
United Kingdom
United States
Uzbekistan
See also Economics of nuclear power plants Integrated Nuclear Fuel Cycle Information System List of nuclear power stations List of boiling water reactors List of largest power stations List of small modular reactor designs List of nuclear reprocessing sites Lists of nuclear disasters and radioactive incidents Nuclear power by country Nuclear power reactors in Europe
Notes
References
External links IAEA list as of 2006 NED Database of Commercial Nuclear Power Reactors Reactors Database by the World Nuclear Association