Ireland vs Japan: Primary energy use by source

Ireland

12.06 terawatt-hours

in 2025

Japan

12.84 terawatt-hours

in 2025

Ireland rank

27th

Japan rank

24th

Primary energy use by source over time

Japan currently reports 12.84 terawatt-hours against 12.06 terawatt-hours in Ireland, a difference of 0.7792 terawatt-hours.

That makes Japan's figure about 1.1 times Ireland's.

The two have swapped places 4 times across 61 shared years of data; in 1965 it was Japan ahead.

Ireland ranks 27th and Japan ranks 24th of 79 regions.

Indicator: Primary energy use by source
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: 82 places, 4,686 data points, 1965–2025
Last refreshed: 07 August 2026

Measured in terawatt-hours of total energy supply.