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 8.9% of the world's electricity in 2025. These are annual statistics for 2025, with monthly figures through June 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 8.9%.
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
8.9%
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
Nuclear
South Africa's electricity generation from nuclear each year from 2000 to 2025, in TWh. It was 10.2 TWh in 2025.
Annual statistics through 2025, TWh
South Africa nuclear electricity generation, 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
South AfricaWorld
The share of South Africa's electricity generated from nuclear, 2000 to 2025, compared with the world share. In 2025 it was 4.2%, against 8.9% worldwide.
Annual statistics through 2025, % of generation
Share of South Africa's electricity from nuclear and the world share, 2000 to 2025
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 June 2026
Nuclear
South Africa generated 460 GWh of electricity from nuclear in June 2026, against 680 GWh in June 2025.
Monthly statistics through June 2026, TWh
South Africa monthly nuclear electricity generation, July 2024 to June 2026
Month
Nuclear
2024-07
680 GWh
2024-08
690 GWh
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
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of June 2026. Monthly figures for South Africa can differ slightly from the annual totals.