🔬 Science & Nature

Top 10 countries and regions with the highest nuclear-electricity shares in 2023

Daily Tens #100 · Wednesday, October 21, 2026 · Ranked by nuclear electricity as a percentage of electricity production

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The answers

1 France
2 Slovakia
3 Ukraine
4 Hungary
5 Finland
6 Bulgaria
7 Czechia
8 Belgium
9 Slovenia
10 Switzerland

Sources & methodology

Metric: Nuclear electricity as a percentage of electricity production
Data through: 2023; World Bank snapshot checked November 2026
Source: World Bank — World Development Indicators
Notes: Domestic generation only; the measure excludes the nuclear share of imported electricity. Reporting economies only: aggregates and null observations excluded. Equal values use ISO 3-letter code order.

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