Japan vs South Africa: Share of electricity generation from nuclear
Japan
9.1%
in 2025
South Africa
4.2%
in 2025
Japan rank
23rd
South Africa rank
26th
Share of electricity generation from nuclear over time
- Japan
- South Africa
How they compare
Japan currently reports 9.1% against 4.2% in South Africa, a difference of 4.9%.
That makes Japan's figure about 2.2 times South Africa's.
The two have swapped places 2 times across 41 shared years of data; in 1985 it was Japan ahead.
Japan ranks 23rd and South Africa ranks 26th of 207 countries.
Japan has averaged higher in every one of the 5 decades both report.
Head to head by decade
| Decade | Japan | South Africa | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 24.1% | 5.4% | 18.7% | Japan |
| 1990s | 26.9% | 5.6% | 21.3% | Japan |
| 2000s | 25.5% | 5.1% | 20.4% | Japan |
| 2010s | 5.9% | 5.2% | 0.6% | Japan |
| 2020s | 6.7% | 4.0% | 2.7% | Japan |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher share of electricity generation from nuclear, Japan or South Africa?
- Japan, at 9.1% against 4.2% in South Africa as of 2025.
- What is the difference in share of electricity generation from nuclear between Japan and South Africa?
- 4.9%, with Japan ahead.
- How many years of comparable data are there for Japan and South Africa?
- 41 years are reported by both, from 1985 to 2025.
- How do Japan and South Africa rank globally for share of electricity generation from nuclear?
- Japan ranks 23rd and South Africa ranks 26th of 207 countries.
- Where does this data come from?
- Ember (2026) and other sources – with major processing by Our World in Data, published as Share of electricity generation from nuclear. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Measured as a percentage of total electricity produced in the country or region.