Countries with the Most Nuclear Power Reactors 2025

About This Dataset

Countries ranked by the total number of operational nuclear power reactors in 2025 according to IAEA Power Reactor Information System data. The United States operates more nuclear reactors than any other country, with 93 operational units generating approximately 20% of the nation's total electricity supply. AI-assisted data.

✨ AI Insight

The United States maintains a commanding lead in nuclear power with 93 operational reactors, generating around 20% of its electricity. France and China are tied in second place with 56 reactors each, indicating a strong commitment to nuclear energy in both countries. Russia, with 36 reactors, and South Korea with 26, follow but show a notable gap compared to the leaders. India's 22 reactors reflect its growing investment in nuclear energy, while Canada and Ukraine trail with 19 and 15 reactors, respectively. The data suggests that while nuclear energy remains a crucial component of electricity generation, the disparity in reactor numbers may influence energy security and policy decisions in these countries.

Source: IAEA

Key Findings

Auto-computed highlights from this dataset

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United States leads with 93 in 2025.

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Average value in 2025: 40 · median: 31.

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Gap in 2025: United States is 6.2× larger than Ukraine.