South Africa Nuclear Power: Generation, Share and Trend
South Africa generated 10.2 TWh of electricity from nuclear in 2025, 4.2% of its total, according to Ember. That made it the 25th 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 August 2026; they are compiled from national sources and are not real time.
Key Facts
- South Africa generated 10.2 TWh of electricity from nuclear in 2025.
- Nuclear supplied 4.2% of South Africa's electricity in 2025.
- South Africa was the 25th largest nuclear power producer in 2025 among the 32 countries with Ember data, comparing each country's latest year.
- South Africa's nuclear generation in 2025 was 3% higher than in 2020, when it was 9.90 TWh.
- South Africa's nuclear generation in 2025 was 17% lower than in 2015, when it was 12.2 TWh.
- South Africa's nuclear generation peaked at 15.0 TWh in 2016.
- South Africa's nuclear share in 2025 was below the world share of 8.8%.
- South Africa had 1.93 GW of nuclear generating capacity in 2025.
Key Figures, 2025
| Measure | Value | As of / source |
|---|---|---|
| Nuclear generation | 10.2 TWh | 2025 · Ember |
| Share of South Africa's electricity | 4.2% | 2025 · Ember |
| World share of nuclear | 8.8% | 2025 · Ember |
| Rank by nuclear generation (each country's latest year) | 25 of 32 | 2025 · Ember |
| Nuclear capacity | 1.93 GW | 2025 · Ember |
Nuclear Generation Year by Year
Ember annual statistics, 2000 to 2025| Year | Nuclear |
|---|---|
| 2000 | 13.0 TWh |
| 2001 | 10.7 TWh |
| 2002 | 12.0 TWh |
| 2003 | 12.7 TWh |
| 2004 | 13.4 TWh |
| 2005 | 11.3 TWh |
| 2006 | 10.0 TWh |
| 2007 | 11.3 TWh |
| 2008 | 13.0 TWh |
| 2009 | 12.8 TWh |
| 2010 | 13.5 TWh |
| 2011 | 12.9 TWh |
| 2012 | 13.0 TWh |
| 2013 | 14.1 TWh |
| 2014 | 13.8 TWh |
| 2015 | 12.2 TWh |
| 2016 | 15.0 TWh |
| 2017 | 14.2 TWh |
| 2018 | 11.6 TWh |
| 2019 | 13.3 TWh |
| 2020 | 9.90 TWh |
| 2021 | 12.4 TWh |
| 2022 | 10.1 TWh |
| 2023 | 8.10 TWh |
| 2024 | 7.80 TWh |
| 2025 | 10.2 TWh |
| Year | South Africa | World |
|---|---|---|
| 2000 | 6.2% | 16.6% |
| 2001 | 5.1% | 16.9% |
| 2002 | 5.4% | 16.5% |
| 2003 | 5.4% | 15.6% |
| 2004 | 5.5% | 15.6% |
| 2005 | 4.6% | 15.0% |
| 2006 | 4.0% | 14.7% |
| 2007 | 4.3% | 13.7% |
| 2008 | 5.0% | 13.4% |
| 2009 | 5.1% | 13.3% |
| 2010 | 5.2% | 12.8% |
| 2011 | 4.9% | 11.9% |
| 2012 | 5.0% | 10.8% |
| 2013 | 5.5% | 10.6% |
| 2014 | 5.4% | 10.5% |
| 2015 | 4.9% | 10.6% |
| 2016 | 5.9% | 10.4% |
| 2017 | 5.6% | 10.2% |
| 2018 | 4.5% | 10.1% |
| 2019 | 5.2% | 10.3% |
| 2020 | 4.1% | 9.9% |
| 2021 | 5.0% | 9.8% |
| 2022 | 4.2% | 9.1% |
| 2023 | 3.5% | 9.1% |
| 2024 | 3.2% | 9.0% |
| 2025 | 4.2% | 8.8% |
| Year | Generation | Share | World share | Capacity |
|---|---|---|---|---|
| 2025 | 10.2 TWh | 4.2% | 8.8% | 1.93 GW |
| 2024 | 7.80 TWh | 3.2% | 9.0% | 1.93 GW |
| 2023 | 8.10 TWh | 3.5% | 9.1% | 1.93 GW |
| 2022 | 10.1 TWh | 4.2% | 9.1% | 1.94 GW |
| 2021 | 12.4 TWh | 5.0% | 9.8% | 1.93 GW |
| 2020 | 9.90 TWh | 4.1% | 9.9% | 1.94 GW |
| 2019 | 13.3 TWh | 5.2% | 10.3% | 1.94 GW |
| 2018 | 11.6 TWh | 4.5% | 10.1% | 1.94 GW |
| 2017 | 14.2 TWh | 5.6% | 10.2% | 1.94 GW |
| 2016 | 15.0 TWh | 5.9% | 10.4% | 1.94 GW |
Full year by year history for South Africa
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 August 2026| Month | Nuclear |
|---|---|
| 2024-09 | 350 GWh |
| 2024-10 | 700 GWh |
| 2024-11 | 670 GWh |
| 2024-12 | 670 GWh |
| 2025-01 | 1.26 TWh |
| 2025-02 | 860 GWh |
| 2025-03 | 520 GWh |
| 2025-04 | 680 GWh |
| 2025-05 | 700 GWh |
| 2025-06 | 680 GWh |
| 2025-07 | 700 GWh |
| 2025-08 | 700 GWh |
| 2025-09 | 670 GWh |
| 2025-10 | 700 GWh |
| 2025-11 | 1.33 TWh |
| 2025-12 | 1.41 TWh |
| 2026-01 | 1.39 TWh |
| 2026-02 | 1.27 TWh |
| 2026-03 | 1.39 TWh |
| 2026-04 | 810 GWh |
| 2026-05 | 480 GWh |
| 2026-06 | 460 GWh |
| 2026-07 | 480 GWh |
| 2026-08 | 390 GWh |
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of August 2026. Monthly figures for South Africa can differ slightly from the annual totals.
Related
Cite this page
World Power Monitor. (2026). South Africa Nuclear Power: Generation, Share and Trend. https://worldpowermonitor.com/countries/south-africa/nuclear/
World Power Monitor. South Africa Nuclear Power: Generation, Share and Trend. Data as of 2026-08. Data from Ember. https://worldpowermonitor.com/countries/south-africa/nuclear/
@misc{wpm_countries_south_africa_nuclear_2026,
title = {{South Africa Nuclear Power: Generation, Share and Trend}},
author = {{World Power Monitor}},
year = {2026},
note = {Data as of 2026-08. Data from Ember.},
url = {https://worldpowermonitor.com/countries/south-africa/nuclear/}
} Permalink: https://worldpowermonitor.com/countries/south-africa/nuclear/
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