Japan vs Ukraine: Primary energy from nuclear
Japan
285.05 terawatt-hours
in 2025
Ukraine
163.94 terawatt-hours
in 2025
Japan rank
6th
Ukraine rank
9th
Primary energy from nuclear over time
- Japan
- Ukraine
How they compare
Japan currently reports 285.05 terawatt-hours against 163.94 terawatt-hours in Ukraine, a difference of 121.11 terawatt-hours.
That makes Japan's figure about 1.7 times Ukraine's.
The two have swapped places 2 times across 41 shared years of data; in 1985 it was Japan ahead.
Japan ranks 6th and Ukraine ranks 9th of 213 countries.
Across the 5 decades both report, Japan averaged higher in 4 and Ukraine in 1.
Head to head by decade
| Decade | Japan | Ukraine | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 529.25 terawatt-hours | 172.7 terawatt-hours | 356.55 terawatt-hours | Japan |
| 1990s | 810.3 terawatt-hours | 226.06 terawatt-hours | 584.25 terawatt-hours | Japan |
| 2000s | 870.48 terawatt-hours | 255.82 terawatt-hours | 614.66 terawatt-hours | Japan |
| 2010s | 198.15 terawatt-hours | 261.42 terawatt-hours | 63.27 terawatt-hours | Ukraine |
| 2020s | 208.3 terawatt-hours | 193.83 terawatt-hours | 14.46 terawatt-hours | Japan |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher primary energy from nuclear, Japan or Ukraine?
- Japan, at 285.05 terawatt-hours against 163.94 terawatt-hours in Ukraine as of 2025.
- What is the difference in primary energy from nuclear between Japan and Ukraine?
- 121.11 terawatt-hours, with Japan ahead.
- How many years of comparable data are there for Japan and Ukraine?
- 41 years are reported by both, from 1985 to 2025.
- How do Japan and Ukraine rank globally for primary energy from nuclear?
- Japan ranks 6th and Ukraine ranks 9th of 213 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 Primary energy from nuclear. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Measured in terawatt-hours of total energy supply.