Switzerland Nuclear Power: Generation, Share and Trend
Switzerland generated 19.4 TWh of electricity from nuclear in 2025, 29.9% of its total, according to Ember. That made it the 18th largest nuclear power producer in 2025 of the 32 countries with Ember data, comparing each country's latest year. Nuclear supplied 8.8% of the world's electricity in 2025. These are annual statistics for 2025, with monthly figures through May 2026; they are compiled from national sources and are not real time.
Key Facts
- Switzerland generated 19.4 TWh of electricity from nuclear in 2025.
- Nuclear supplied 29.9% of Switzerland's electricity in 2025.
- Switzerland was the 18th largest nuclear power producer in 2025 among the 32 countries with Ember data, comparing each country's latest year.
- Switzerland's nuclear generation in 2025 was 19% lower than in 2020, when it was 24.0 TWh.
- Switzerland's nuclear generation in 2025 was 16% lower than in 2015, when it was 23.1 TWh.
- Switzerland's nuclear generation peaked at 27.9 TWh in 2007.
- Switzerland's nuclear share in 2025 was above the world share of 8.8%.
- Switzerland had 2.97 GW of nuclear generating capacity in 2025.
Key Figures, 2025
| Measure | Value | As of / source |
|---|---|---|
| Nuclear generation | 19.4 TWh | 2025 · Ember |
| Share of Switzerland's electricity | 29.9% | 2025 · Ember |
| World share of nuclear | 8.8% | 2025 · Ember |
| Rank by nuclear generation (each country's latest year) | 18 of 32 | 2025 · Ember |
| Nuclear capacity | 2.97 GW | 2025 · Ember |
Nuclear Generation Year by Year
Ember annual statistics, 2000 to 2025| Year | Nuclear |
|---|---|
| 2000 | 26.5 TWh |
| 2001 | 26.8 TWh |
| 2002 | 27.2 TWh |
| 2003 | 27.5 TWh |
| 2004 | 27.0 TWh |
| 2005 | 23.3 TWh |
| 2006 | 27.8 TWh |
| 2007 | 27.9 TWh |
| 2008 | 27.7 TWh |
| 2009 | 27.7 TWh |
| 2010 | 26.3 TWh |
| 2011 | 26.7 TWh |
| 2012 | 25.4 TWh |
| 2013 | 26.0 TWh |
| 2014 | 27.6 TWh |
| 2015 | 23.1 TWh |
| 2016 | 21.2 TWh |
| 2017 | 20.4 TWh |
| 2018 | 25.5 TWh |
| 2019 | 26.4 TWh |
| 2020 | 24.0 TWh |
| 2021 | 19.4 TWh |
| 2022 | 24.2 TWh |
| 2023 | 24.4 TWh |
| 2024 | 24.0 TWh |
| 2025 | 19.4 TWh |
| Year | Switzerland | World |
|---|---|---|
| 2000 | 40.0% | 16.6% |
| 2001 | 37.7% | 16.9% |
| 2002 | 41.6% | 16.5% |
| 2003 | 42.1% | 15.6% |
| 2004 | 42.2% | 15.6% |
| 2005 | 40.4% | 15.0% |
| 2006 | 44.8% | 14.7% |
| 2007 | 42.0% | 13.7% |
| 2008 | 41.3% | 13.4% |
| 2009 | 41.5% | 13.3% |
| 2010 | 39.9% | 12.8% |
| 2011 | 42.5% | 11.9% |
| 2012 | 37.3% | 10.8% |
| 2013 | 37.8% | 10.6% |
| 2014 | 39.3% | 10.5% |
| 2015 | 35.0% | 10.6% |
| 2016 | 34.6% | 10.4% |
| 2017 | 33.9% | 10.2% |
| 2018 | 38.5% | 10.1% |
| 2019 | 37.4% | 10.3% |
| 2020 | 35.1% | 9.9% |
| 2021 | 30.7% | 9.8% |
| 2022 | 39.1% | 9.1% |
| 2023 | 34.8% | 9.1% |
| 2024 | 30.7% | 9.0% |
| 2025 | 29.9% | 8.8% |
| Year | Generation | Share | World share | Capacity |
|---|---|---|---|---|
| 2025 | 19.4 TWh | 29.9% | 8.8% | 2.97 GW |
| 2024 | 24.0 TWh | 30.7% | 9.0% | 2.97 GW |
| 2023 | 24.4 TWh | 34.8% | 9.1% | 2.97 GW |
| 2022 | 24.2 TWh | 39.1% | 9.1% | 2.96 GW |
| 2021 | 19.4 TWh | 30.7% | 9.8% | 2.96 GW |
| 2020 | 24.0 TWh | 35.1% | 9.9% | 3.33 GW |
| 2019 | 26.4 TWh | 37.4% | 10.3% | 3.33 GW |
| 2018 | 25.5 TWh | 38.5% | 10.1% | 3.33 GW |
| 2017 | 20.4 TWh | 33.9% | 10.2% | 3.33 GW |
| 2016 | 21.2 TWh | 34.6% | 10.4% | 3.33 GW |
Full year by year history for Switzerland
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of 2025. World shares are Ember's World totals; ranks compare each country's latest year, which can differ between countries.
Nuclear Generation Month by Month
Ember monthly statistics through May 2026| Month | Nuclear |
|---|---|
| 2024-06 | 1.25 TWh |
| 2024-07 | 2.14 TWh |
| 2024-08 | 2.00 TWh |
| 2024-09 | 2.07 TWh |
| 2024-10 | 1.91 TWh |
| 2024-11 | 2.12 TWh |
| 2024-12 | 2.20 TWh |
| 2025-01 | 2.20 TWh |
| 2025-02 | 1.97 TWh |
| 2025-03 | 2.18 TWh |
| 2025-04 | 1.88 TWh |
| 2025-05 | 1.12 TWh |
| 2025-06 | 1.35 TWh |
| 2025-07 | 1.14 TWh |
| 2025-08 | 1.15 TWh |
| 2025-09 | 1.12 TWh |
| 2025-10 | 1.40 TWh |
| 2025-11 | 1.40 TWh |
| 2025-12 | 1.46 TWh |
| 2026-01 | 1.45 TWh |
| 2026-02 | 1.32 TWh |
| 2026-03 | 1.47 TWh |
| 2026-04 | 1.85 TWh |
| 2026-05 | 1.14 TWh |
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of May 2026. Monthly figures for Switzerland can differ slightly from the annual totals.
Related
Cite this page
World Power Monitor. (2026). Switzerland Nuclear Power: Generation, Share and Trend. https://worldpowermonitor.com/countries/switzerland/nuclear/
World Power Monitor. Switzerland Nuclear Power: Generation, Share and Trend. Data as of 2026-05. Data from Ember. https://worldpowermonitor.com/countries/switzerland/nuclear/
@misc{wpm_countries_switzerland_nuclear_2026,
title = {{Switzerland Nuclear Power: Generation, Share and Trend}},
author = {{World Power Monitor}},
year = {2026},
note = {Data as of 2026-05. Data from Ember.},
url = {https://worldpowermonitor.com/countries/switzerland/nuclear/}
} Permalink: https://worldpowermonitor.com/countries/switzerland/nuclear/
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