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Number of operational nuclear reactors worldwide as of October 2025, by region
Global number of operating nuclear reactors 2025, by region
As of October 2025, there were 416 operating nuclear reactors worldwide. Europe accounted for the largest number of reactors at the time, with 167 units. Asia followed, with 129 operational reactors. Despite ranking second in number of operational reactors, Asia is the region with the highest number of nuclear reactors under construction.
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IAEA. (October 12, 2025). Number of operational nuclear reactors worldwide as of October 2025, by region [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 15, 2026, from /statistics/1203469/operating-nuclear-reactors-worldwide/
IAEA. "Number of operational nuclear reactors worldwide as of October 2025, by region." Chart. October 12, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 15, 2026. /statistics/1203469/operating-nuclear-reactors-worldwide/
IAEA. (2025). Number of operational nuclear reactors worldwide as of October 2025, by region. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 15, 2026. /statistics/1203469/operating-nuclear-reactors-worldwide/
IAEA. "Number of Operational Nuclear Reactors Worldwide as of October 2025, by Region." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 12 Oct 2025, /statistics/1203469/operating-nuclear-reactors-worldwide/
IAEA, Number of operational nuclear reactors worldwide as of October 2025, by region ÌÇÐÄÆƽâ°æ, /statistics/1203469/operating-nuclear-reactors-worldwide/ (last visited July 15, 2026)
Number of operational nuclear reactors worldwide as of October 2025, by region [Graph], IAEA, October 12, 2025. [Online]. Available: /statistics/1203469/operating-nuclear-reactors-worldwide/
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