Five countries account for 71% of the world’s nuclear generation capacity

The U.S. leads in nuclear capacity, followed by France, China, Russia, and South Korea.

As of June 2025, five countries—United States, France, China, Russia, and South Korea—account for over two-thirds of the global nuclear electricity generation capacity. There are 416 operational nuclear reactors across 31 countries, totaling 376 gigawatts (GW) of installed net generating capacity, according to the International Atomic Energy Agency (IAEA).

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Sectors: nuclear, power

Regions: US, EU, China, MENA