| Operating reactors, building new reactors Operating reactors, planning new build No reactors, building new reactors No reactors, planning new build | Operating reactors, stable Operating but mayphase-out Civil nuclear power illegal No reactors |
Nuclear power plants operate in 31 countries and generate about a tenth of the world's electricity.[2] Most are inEurope,North America andEast Asia.TheUnited States is the largest producer of nuclear power, whileFrance has the largest share of electricity generated by nuclear power, at about 65%.[3]
Some countries operated nuclear reactors in the past but currently have no operating nuclear power plants. Among them,Italy closed all of its nuclear stations by 1990 and nuclear power has since been discontinued because of the1987 referendums.Lithuania closed itsRBMK reactor type nuclear station in 2009 for safety reasons.Kazakhstan phased out nuclear power in June of 1999 but is planning to reintroduce it possibly by 2035 underreferendum.[4]Germany operated nuclear plants since 1960 until the completion of its phaseout policy in 2023.Taiwan completed its phaseout policy in 2025.Austria (Zwentendorf Nuclear Power Plant) and thePhilippines (Bataan Nuclear Power Plant) both built a nuclear plant but never put it in use.
Sweden and Belgium originally had phase-out policies however they have now moved away from their original plans. The Philippines relaunched their nuclear programme on February 28, 2022 and may try to operate the 1984 mothballed Bataan Plant.[5][6]
As of 2020, Poland was in advanced planning phase for 1.5 GW and planned to have up to 9 GW by 2040.[7] Hong Kong has no nuclear power plants within its boundary, but imports 80% of the electricity generated fromDaya Bay Nuclear Power Station located across the border, in which the power company of the territory holds stake.[8][9] In 2021,Iraq declared it was planning to build 8 nuclear reactors by 2030 to supply up to 25% electric power in a grid that was suffering from shortages.[10]
Of the 31 countries in which nuclear power plants operate, onlyFrance,Slovakia,Belgium andUkraine use them as the source for a majority of the country's electricity supply as of 2024. Other countries have significant amounts of nuclear power generation capacity. By far the largest nuclear electricity producers are theUnited States with 781,945GWh of nuclear electricity in 2024, followed byChina with 417,518 GWh.[2] As of October 2025, 416 reactors with a net capacity of 376,261MWe were operational, and 63 reactors with net capacity of 66,190 MWe were under construction.[11][12] Of the reactors under construction, 29 reactors with 30,847 MWe were inChina and 6 reactors with a capacity of 4,768 MWe were inIndia.[12]
| Country | Reactors | Capacity (MW) | Generation (GWh) | % total | Capacity factor | |||
|---|---|---|---|---|---|---|---|---|
| In use | Suspended | Being built | ||||||
| World | 416 | 23 | 62 | 379,000 | 2,617,530 | 8.48% | 84.6% | |
 Argentina | 3 | 0 | 1 | 1,641 | 10,449 | 7.4% | 72.5% | |
 Armenia | 1 | 0 | 0 | 416 | 2,629 | 30.8% | 72.5% | |
 Bangladesh | 0 | 0 | 2 | 2,160 | N/a | N/a | N/a | |
 Belarus | 2 | 0 | 0 | 2,220 | 14,735 | 36.3% | 77% | |
 Belgium | 5 | 0 | 0 | 3,908 | 29,732 | 57.3% | 86.9% | |
 Brazil | 2 | 0 | 1 | 1,884 | 14,862 | 2.3% | 89.67% | |
 Bulgaria | 2 | 0 | 0 | 2,006 | 15,110 | 41.6% | 85.1% | |
 Canada | 19 | 0 | 0 | 13,744 | 81,156 | 13.4% | 68.2% | |
 China | 59 | 0 | 28 | 62,219 | 417,518 | 4.81% | 90.8% | |
 Czech Republic | 6 | 0 | 0 | 3,963 | 28,049 | 40.2% | 81.4% | |
 Egypt | 0 | 0 | 4 | 4,400 | N/a | N/a | N/a | |
 Finland | 5 | 0 | 0 | 4,369 | 31,128 | 39.1% | 84.1% | |
 France | 57 | 0 | 0 | 63,000 | 364,390 | 67.3% | 74.2% | |
 Hungary | 4 | 0 | 0 | 1,916 | 15,163 | 47.1% | 90.6% | |
 India | 20 | 4 | 6 | 6,920 | 49,910 | 3.3% | 84.4% | |
 Iran | 1 | 0 | 1 | 915 | 6,439 | 1.7% | 78.7% | |
 Japan | 14 | 19 | 2 | 31,679 | 84,887 | 10.0% | 33.0% | |
 Mexico | 2 | 0 | 0 | 1,552 | 11,978 | 4.8% | 90.8% | |
 Netherlands | 1 | 0 | 0 | 482 | 3,385 | 2.8% | 80.3% | |
 Pakistan | 6 | 0 | 1 | 3,262 | 22,783 | 16.7% | 86.4% | |
 Romania | 2 | 0 | 0 | 1,300 | 10,044 | 19.8% | 90.7% | |
 Russia | 37 | 0 | 4 | 27,727 | 202,104 | 17.8% | 85.3% | |
 Slovakia | 5 | 0 | 1 | 2,302 | 16,958 | 60.6% | 87.8% | |
 Slovenia | 1 | 0 | 0 | 696 | 5,551 | 35% | 91.1% | [a] |
 South Africa | 2 | 0 | 0 | 1,854 | 7,835 | 3.9% | 47.6% | |
 South Korea | 26 | 0 | 2 | 25,609 | 179,407 | 31.7% | 79.6% | |
 Spain | 7 | 0 | 0 | 7,123 | 52,129 | 19.9% | 88.5% | [b] |
 Sweden | 6 | 0 | 0 | 7,008 | 48,697 | 29.1% | 82.5% | |
 Switzerland | 4 | 0 | 0 | 2,973 | 23,033 | 28.6% | 89.3% | [c] |
 Turkey | 0 | 0 | 4 | 4,456 | N/a | N/a | N/a | |
 Ukraine | 15 | 0 | 2 | 13,107 | 81,126 | 55.0% | 71% | [d] |
 United Arab Emirates | 4 | 0 | 0 | 5,348 | 36,504 | 21.8% | 89.5% | |
 United Kingdom | 9 | 0 | 2 | 5,883 | 37,295 | 12.3% | 72.7% | |
 United States | 94 | 0 | 0 | 96,952 | 781,945 | 18.2% | 92.5% | |