Share of primary energy from nuclear by country
Measured as a percentage of total energy supply.
Countries reporting
36
Highest
47.1%
France
Lowest
0.0%
Germany
Median
7.9%
Years covered
61
1965–2025
Data points
10,361
What the numbers show
Share of primary energy from nuclear is currently reported for 36 countries. The highest value is 47.1% in France; the lowest is 0.0% in Germany.
The median across all reporting countries is 7.9%, and the mean is 11.7%.
Over the past decade 16 countries rose and 15 fell. The largest increase was in Japan (up 2,265.7%), and the largest decrease in Germany (down 100.0%).
Share of primary energy from nuclear: full country ranking
| # | Country | Latest | Year | 10-year change | Trend |
|---|---|---|---|---|---|
| 1 | France | 47.1% | 2025 | up 2.3% | volatile |
| 2 | Finland | 33.5% | 2025 | up 46.4% | volatile |
| 3 | Slovakia | 32.5% | 2025 | up 28.9% | volatile |
| 4 | Sweden | 30.8% | 2025 | down 12.0% | volatile |
| 5 | Slovenia | 25.7% | 2025 | up 5.4% | rising |
| 6 | Ukraine | 24.8% | 2025 | down 3.9% | rising |
| 7 | Bulgaria | 24.0% | 2025 | up 11.9% | volatile |
| 8 | Czechia | 23.1% | 2025 | up 34.8% | volatile |
| 9 | Switzerland | 22.8% | 2025 | down 9.4% | rising |
| 10 | Hungary | 19.2% | 2025 | up 2.6% | volatile |
| 11 | Belarus | 16.4% | 2025 | — | volatile |
| 12 | South Korea | 15.5% | 2025 | up 5.1% | volatile |
| 13 | Belgium | 11.8% | 2025 | down 2.9% | volatile |
| 14 | Spain | 11.4% | 2025 | down 5.4% | volatile |
| 15 | Romania | 10.5% | 2025 | up 2.4% | volatile |
| 16 | United States | 9.6% | 2025 | down 4.0% | rising |
| 17 | Pakistan | 8.3% | 2025 | up 389.8% | volatile |
| 18 | United Arab Emirates | 8.1% | 2025 | — | volatile |
| 19 | Canada | 7.7% | 2025 | down 15.7% | rising |
| 20 | Russia | 7.6% | 2025 | down 0.1% | rising |
| 21 | Japan | 6.2% | 2025 | up 2,265.7% | volatile |
| 22 | United Kingdom | 6.2% | 2025 | down 35.3% | rising |
| 23 | Argentina | 3.7% | 2025 | up 60.8% | volatile |
| 24 | China | 3.3% | 2025 | up 106.7% | volatile |
| 25 | USSR | 3.0% | 1984 | up 384.5% | volatile |
| 26 | South Africa | 2.3% | 2025 | down 11.5% | volatile |
| 27 | Brazil | 1.5% | 2025 | down 0.4% | volatile |
| 28 | India | 1.5% | 2025 | down 1.5% | rising |
| 29 | Mexico | 1.4% | 2025 | down 15.9% | volatile |
| 30 | Netherlands | 1.4% | 2025 | up 13.5% | rising |
| 31 | Taiwan | 0.8% | 2025 | down 90.0% | volatile |
| 32 | Iran | 0.4% | 2025 | up 14.6% | volatile |
| 33 | Lithuania | 0.0% | 2025 | — | volatile |
| 33 | Kazakhstan | 0.0% | 2025 | — | volatile |
| 33 | Italy | 0.0% | 2025 | — | volatile |
| 33 | Germany | 0.0% | 2025 | down 100.0% | volatile |
Regions and income groups
Aggregates are excluded from the country ranking above so that a region can never outrank a country.
About this data
Measured as a percentage of total energy supply.