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Data as of 2025
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Built 2026-09-19 (19 September 2026)

Nuclear Power Around the World: Generation by Country

Nuclear generated 2,807 TWh worldwide in 2025, 8.9% of all electricity. The largest producers are the United States, China and France. Figures are Ember annual statistics.

Key Facts

  • Nuclear generated 2,807 TWh of electricity worldwide in 2025, 8.9% of the total.
  • The United States was the largest nuclear power producer, with 785 TWh in 2025.
  • China was the second largest nuclear power producer, with 485 TWh in 2025.
  • France was the third largest nuclear power producer, with 392 TWh in 2025.
  • Nuclear was the largest source of electricity in 9 countries in their latest Ember year.
  • Nuclear's share of world electricity peaked at 16.9% in 2001.
  • France got the highest share of its electricity from nuclear among countries producing at least 1 TWh, 68.8% in 2025.

World Nuclear Generation

2000 to 2025, TWh
World nuclear electricity generation, 2000 to 2025 Nuclear generated 2,807 TWh of electricity worldwide in 2025, 8.9% of the total. 0 750 1,500 2,250 3,000 200020052010201520202025
Nuclear generated 2,807 TWh of electricity worldwide in 2025, 8.9% of the total.
Annual statistics through 2025, TWh
World nuclear electricity generation, 2000 to 2025
YearNuclear
20002,540 TWh
20012,613 TWh
20022,655 TWh
20032,601 TWh
20042,719 TWh
20052,727 TWh
20062,762 TWh
20072,703 TWh
20082,695 TWh
20092,657 TWh
20102,726 TWh
20112,610 TWh
20122,432 TWh
20132,449 TWh
20142,499 TWh
20152,533 TWh
20162,571 TWh
20172,594 TWh
20182,659 TWh
20192,754 TWh
20202,649 TWh
20212,761 TWh
20222,640 TWh
20232,698 TWh
20242,777 TWh
20252,807 TWh
YearWorld generationShare of world electricity
20252,807 TWh8.9%
20242,777 TWh9.0%
20232,698 TWh9.1%
20222,640 TWh9.1%
20212,761 TWh9.8%
20202,649 TWh9.9%
20192,754 TWh10.3%
20182,659 TWh10.1%
20172,594 TWh10.2%
20162,571 TWh10.4%

Largest Nuclear Power Producers

Each country's latest Ember year
CountryYearGenerationShare of the country's electricity
United States2025785 TWh17.4%
China2025485 TWh4.6%
France2025392 TWh68.8%
Russia2025219 TWh18.3%
South Korea2025185 TWh29.6%
Japan202594.1 TWh9.1%
Canada202585.3 TWh13.1%
Ukraine202262.2 TWh55.8%
Spain202554.1 TWh18.8%
India202553.8 TWh2.6%
Sweden202546.9 TWh27.5%
United Arab Emirates202440.6 TWh22.9%
United Kingdom202536.4 TWh12.3%
Finland202532.8 TWh39.8%
Czechia202532.0 TWh42.4%
Belgium202524.2 TWh33.5%
Pakistan202524.0 TWh14.0%
Switzerland202519.4 TWh29.9%
Slovakia202519.3 TWh66.4%
Belarus202517.0 TWh37.6%
Hungary202516.1 TWh40.1%
Brazil202515.9 TWh2.1%
Bulgaria202514.9 TWh39.0%
Argentina202510.8 TWh7.0%
South Africa202510.2 TWh4.2%
Romania202510.2 TWh20.5%
Mexico202510.2 TWh2.9%
Slovenia20255.84 TWh39.4%
Iran20255.39 TWh1.4%
Netherlands20253.98 TWh3.0%

Highest Share of Nuclear

Countries generating at least 1 TWh from nuclear
CountryYearShareGeneration
France202568.8%392 TWh
Slovakia202566.4%19.3 TWh
Ukraine202255.8%62.2 TWh
Czechia202542.4%32.0 TWh
Hungary202540.1%16.1 TWh
Finland202539.8%32.8 TWh
Slovenia202539.4%5.84 TWh
Bulgaria202539.0%14.9 TWh
Belarus202537.6%17.0 TWh
Belgium202533.5%24.2 TWh
Armenia202531.3%2.66 TWh
Switzerland202529.9%19.4 TWh
South Korea202529.6%185 TWh
Sweden202527.5%46.9 TWh
United Arab Emirates202422.9%40.6 TWh
Romania202520.5%10.2 TWh
Spain202518.8%54.1 TWh
Russia202518.3%219 TWh
United States202517.4%785 TWh
Pakistan202514.0%24.0 TWh

Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of 2025. Country rows use each country's latest available year, which can differ between countries.