What is the difference in annual change in primary energy from nuclear between Japan and USSR?

70.44 terawatt-hours, with USSR ahead.

How many years of comparable data are there for Japan and USSR?

19 years are reported by both, from 1966 to 1984.

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.

Japan vs USSR: Annual change in primary energy from nuclear

Japan

27.75 terawatt-hours

in 2025

USSR

98.19 terawatt-hours

in 1984

Japan rank

3rd

USSR rank

1st

Annual change in primary energy from nuclear over time

Japan
USSR

How they compare

USSR currently reports 98.19 terawatt-hours against 27.75 terawatt-hours in Japan, a difference of 70.44 terawatt-hours.

That makes USSR's figure about 3.5 times Japan's.

The two have swapped places 9 times across 19 shared years of data; in 1966 it was Japan ahead.

Japan ranks 3rd and USSR ranks 1st of 218 countries.

Across the 3 decades both report, Japan averaged higher in 1 and USSR in 2.

Head to head by decade

Decade	Japan	USSR	Difference	Ahead
1960s	0.8008 terawatt-hours	1.34 terawatt-hours	0.5418 terawatt-hours	USSR
1970s	21 terawatt-hours	16.97 terawatt-hours	4.04 terawatt-hours	Japan
1980s	38.71 terawatt-hours	51.02 terawatt-hours	12.31 terawatt-hours	USSR

Averages of every year both report within each decade.

Frequently asked questions

Which has higher annual change in primary energy from nuclear, Japan or USSR?: USSR, at 98.19 terawatt-hours against 27.75 terawatt-hours in Japan as of 1984.
What is the difference in annual change in primary energy from nuclear between Japan and USSR?: 70.44 terawatt-hours, with USSR ahead.
How many years of comparable data are there for Japan and USSR?: 19 years are reported by both, from 1966 to 1984.
How do Japan and USSR rank globally for annual change in primary energy from nuclear?: Japan ranks 3rd and USSR ranks 1st of 218 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 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

Indicator: Annual change in primary energy from nuclear
Unit: terawatt-hours
Source: Energy Institute - Statistical Review of World Energy (2026); Smil (2017) – with major processing by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 221 places, 10,533 data points, 1966–2025
Last refreshed: 07 August 2026

Change in total energy supply relative to the previous year, measured in terawatt-hours.