Japan vs Romania: Annual change in primary energy from hydropower

Japan

-5.23 terawatt-hours

in 2025

Romania

-2.06 terawatt-hours

in 2025

Japan rank

67th

Romania rank

65th

Annual change in primary energy from hydropower over time

Romania currently reports -2.06 terawatt-hours against -5.23 terawatt-hours in Japan, a difference of 3.17 terawatt-hours.

The two have swapped places 41 times across 60 shared years of data; in 1966 it was Japan ahead.

Japan ranks 67th and Romania ranks 65th of 77 countries.

Indicator: Annual change in primary energy from hydropower
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, 4,604 data points, 1966–2025
Last refreshed: 07 August 2026

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