Global Nuclear Electricity Generation by Year 2000-2025

About This Dataset

Electricity generated by nuclear reactors worldwide in each year from 2000 to 2025, in terawatt-hours, from Ember Yearly Electricity Data. The chart shows output rather than installed capacity, so reactor shutdowns, restarts and maintenance outages all move the line.

✨ AI Insight

Nuclear output ends this series at its highest point, 2,812 TWh in 2025, but the climb from 2,540 TWh in 2000 is only 11 percent across 26 years, and eight separate years came in below the one before. The visible break coincides with the Fukushima accident in March 2011: output fell 116 TWh in 2011 and a further 178 TWh in 2012, the largest single-year drop here, bottoming at 2,432 TWh. It took until 2019 to beat the 2010 level again. Because world electricity more than doubled over the same period, nuclear share of global supply nearly halved, from 16.6 percent in 2000 to 8.9 percent in 2025 - a smaller slice of a much bigger pie, not falling output.

Source: Ember - Yearly Electricity Data

Key Findings

Auto-computed highlights from this dataset

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2025 leads with 2,812 in 2000-2025.

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Average value in 2000-2025: 2,648 · median: 2,656.

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Gap in 2000-2025: 2025 is 1.2× larger than 2012.