Czechia vs Japan: Annual percentage change in primary energy from nuclear
Czechia
8.0%
in 2025
Japan
10.8%
in 2025
Czechia rank
6th
Japan rank
4th
Annual percentage change in primary energy from nuclear over time
- Czechia
- Japan
How they compare
Japan currently reports 10.8% against 8.0% in Czechia, a difference of 2.8%.
That makes Japan's figure about 1.4 times Czechia's.
The two have swapped places 13 times across 41 shared years of data; in 1984 it was Czechia ahead.
Czechia ranks 6th and Japan ranks 4th of 36 countries.
Across the 5 decades both report, Czechia averaged higher in 2 and Japan in 3.
Head to head by decade
| Decade | Czechia | Japan | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 143.2% | 8.8% | 134.3% | Czechia |
| 1990s | 0.8% | 5.6% | 4.8% | Japan |
| 2000s | 8.1% | -0.6% | 8.7% | Czechia |
| 2010s | 2.8% | 23.6% | 20.8% | Japan |
| 2020s | 1.0% | 10.4% | 9.4% | Japan |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual percentage change in primary energy from nuclear, Czechia or Japan?
- Japan, at 10.8% against 8.0% in Czechia as of 2025.
- What is the difference in annual percentage change in primary energy from nuclear between Czechia and Japan?
- 2.8%, with Japan ahead.
- How many years of comparable data are there for Czechia and Japan?
- 41 years are reported by both, from 1984 to 2025.
- How do Czechia and Japan rank globally for annual percentage change in primary energy from nuclear?
- Czechia ranks 6th and Japan ranks 4th of 36 countries.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026); Smil (2017) – with major processing by Our World in Data, published as Annual percentage change in primary energy from nuclear. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Percentage change in total energy supply relative to the previous year.