CIS (EI) vs Japan: Annual percentage change in primary energy from nuclear
CIS (EI)
1.8%
in 2025
Japan
10.8%
in 2025
CIS (EI) rank
1st
Japan rank
4th
Annual percentage change in primary energy from nuclear over time
- CIS (EI)
- Japan
How they compare
Japan currently reports 10.8% against 1.8% in CIS (EI), a difference of 9.0%.
That makes Japan's figure about 5.9 times CIS (EI)'s.
The two have swapped places 28 times across 59 shared years of data; in 1966 it was Japan ahead.
CIS (EI) ranks 1st and Japan ranks 4th of 2 groups.
Across the 7 decades both report, CIS (EI) averaged higher in 1 and Japan in 6.
Head to head by decade
| Decade | CIS (EI) | Japan | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 18.8% | 578.3% | 559.6% | Japan |
| 1970s | 33.8% | 68.4% | 34.6% | Japan |
| 1980s | 9.9% | 10.5% | 0.5% | Japan |
| 1990s | -0.5% | 5.6% | 6.1% | Japan |
| 2000s | 3.0% | -0.6% | 3.6% | CIS (EI) |
| 2010s | 1.8% | 23.6% | 21.7% | Japan |
| 2020s | 2.1% | 10.4% | 8.3% | Japan |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual percentage change in primary energy from nuclear, CIS (EI) or Japan?
- Japan, at 10.8% against 1.8% in CIS (EI) as of 2025.
- What is the difference in annual percentage change in primary energy from nuclear between CIS (EI) and Japan?
- 9.0%, with Japan ahead.
- How many years of comparable data are there for CIS (EI) and Japan?
- 59 years are reported by both, from 1966 to 2025.
- How do CIS (EI) and Japan rank globally for annual percentage change in primary energy from nuclear?
- CIS (EI) ranks 1st and Japan ranks 4th of 2 groups.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026); Smil (2017) β 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.