As of August 2025, pressurized light-water moderated and cooled reactors (PWR) were the most common types of nuclear reactor worldwide, with *** units. This accounted for roughly ** percent of operable reactors at the time. Pressurized heavy-water moderated and cooled reactors followed, with ** units.
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IAEA. (August 6, 2025). Number of operable nuclear reactors worldwide as of August 2025, by reactor type [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 22, 2026, from /statistics/513584/number-of-operable-nuclear-reactors-by-type-worldwide/
IAEA. "Number of operable nuclear reactors worldwide as of August 2025, by reactor type." Chart. August 6, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 22, 2026. /statistics/513584/number-of-operable-nuclear-reactors-by-type-worldwide/
IAEA. (2025). Number of operable nuclear reactors worldwide as of August 2025, by reactor type. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 22, 2026. /statistics/513584/number-of-operable-nuclear-reactors-by-type-worldwide/
IAEA. "Number of Operable Nuclear Reactors Worldwide as of August 2025, by Reactor Type." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 6 Aug 2025, /statistics/513584/number-of-operable-nuclear-reactors-by-type-worldwide/
IAEA, Number of operable nuclear reactors worldwide as of August 2025, by reactor type ÌÇÐÄÆƽâ°æ, /statistics/513584/number-of-operable-nuclear-reactors-by-type-worldwide/ (last visited July 22, 2026)
Number of operable nuclear reactors worldwide as of August 2025, by reactor type [Graph], IAEA, August 6, 2025. [Online]. Available: /statistics/513584/number-of-operable-nuclear-reactors-by-type-worldwide/
