The United States operates the world’s largest nuclear power plant fleet

eia - Slade Johnson | Source: EIA | Posted 04/25/2025

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In 2024, U.S. utilities operated 94 nuclear reactors with a total net generating capacity of nearly 97 gigawatts (GW), the largest commercial nuclear power generation fleet in the world. The next three countries with the largest programs were France with 57 units (63.0 GW), China with 57 units (55.3 GW), and Russia with 36 units (28.6 GW). Nuclear power continues to account for 19% of U.S. power sector electricity generation.

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As of 2024, the United States boasts the largest fleet of nuclear power plants globally, with 94 reactors generating nearly 97 gigawatts (GW) of electricity. This accounts for 19% of the country's total electricity generation. Following the U.S. are France, China, and Russia, with 57 reactors each, but with significantly lower total capacities. The U.S. nuclear fleet consists of 54 power plants, with Plant Vogtle in Georgia being the largest, featuring four reactors and a capacity of around 4.5 GW.

Recent developments include the addition of two new reactors at Plant Vogtle, making it the largest nuclear facility in the U.S. since 1996. Despite the permanent closure of twelve reactors since 2013, the operational efficiency of existing plants has improved, leading to higher capacity factors. New policies from the U.S. Department of Energy aim to support ongoing operations, such as credits for the Diablo Canyon Power Plant in California and a loan to restart the Palisades plant in Michigan, which could mark the first return of a retired nuclear facility to operation.

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The United States operates the world’s largest nuclear power plant fleet

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