CIS (EI) vs Japan: Annual change in primary energy from nuclear
CIS (EI)
13.01 terawatt-hours
in 2025
Japan
27.75 terawatt-hours
in 2025
CIS (EI) rank
2nd
Japan rank
3rd
Annual change in primary energy from nuclear over time
- CIS (EI)
- Japan
How they compare
Japan currently reports 27.75 terawatt-hours against 13.01 terawatt-hours in CIS (EI), a difference of 14.74 terawatt-hours.
That makes Japan's figure about 2.1 times CIS (EI)'s.
The two have swapped places 26 times across 60 shared years of data; in 1966 it was Japan ahead.
CIS (EI) ranks 2nd and Japan ranks 3rd of 3 groups.
Across the 7 decades both report, CIS (EI) averaged higher in 3 and Japan in 4.
Head to head by decade
| Decade | CIS (EI) | Japan | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 1.34 terawatt-hours | 0.8008 terawatt-hours | 0.5418 terawatt-hours | CIS (EI) |
| 1970s | 16.97 terawatt-hours | 21 terawatt-hours | 4.04 terawatt-hours | Japan |
| 1980s | 23.67 terawatt-hours | 34.98 terawatt-hours | 11.31 terawatt-hours | Japan |
| 1990s | -4.17 terawatt-hours | 39.82 terawatt-hours | 44 terawatt-hours | Japan |
| 2000s | 12.76 terawatt-hours | -12.9 terawatt-hours | 25.67 terawatt-hours | CIS (EI) |
| 2010s | 13.67 terawatt-hours | -63.34 terawatt-hours | 77.01 terawatt-hours | CIS (EI) |
| 2020s | 13.82 terawatt-hours | 14.36 terawatt-hours | 0.542 terawatt-hours | Japan |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual change in primary energy from nuclear, CIS (EI) or Japan?
- Japan, at 27.75 terawatt-hours against 13.01 terawatt-hours in CIS (EI) as of 2025.
- What is the difference in annual change in primary energy from nuclear between CIS (EI) and Japan?
- 14.74 terawatt-hours, with Japan ahead.
- How many years of comparable data are there for CIS (EI) and Japan?
- 60 years are reported by both, from 1966 to 2025.
- How do CIS (EI) and Japan rank globally for annual change in primary energy from nuclear?
- CIS (EI) ranks 2nd and Japan ranks 3rd of 3 groups.
- 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 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
Change in total energy supply relative to the previous year, measured in terawatt-hours.