Nuclear Share of Electricity by Country 2024

About This Dataset

This chart ranks countries by the share of their electricity generated from nuclear power in 2024. It measures reliance on nuclear within each national grid, not the total amount of nuclear electricity produced.

✨ AI Insight

France leads with 67.7% of its electricity from nuclear power, the only large economy to have built its grid around the technology, followed by Slovakia on 61.8%. No other country exceeds 43%. The list is overwhelmingly European and strikingly post-communist: Slovakia, Hungary, Bulgaria, Czechia, Slovenia and Belarus all sit between 34% and 43%, reflecting reactor fleets built during the Soviet era and kept running ever since. Belgium's 41.1% is notable given its repeated political commitments to phase nuclear out. Notably absent are the countries with the most reactors in absolute terms, the United States and China, because their grids are so vast that nuclear supplies only a modest fraction of a much larger total.

Source: Our World in Data (Ember / Energy Institute)

Key Findings

Auto-computed highlights from this dataset

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France leads with 68 in 2024.

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Average value in 2024: 43 · median: 41.

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Gap in 2024: France is 2.2× larger than Switzerland.