Japan vs Vietnam: Primary energy from hydropower
Japan
74.25 terawatt-hours
in 2025
Vietnam
101.83 terawatt-hours
in 2025
Japan rank
9th
Vietnam rank
8th
Primary energy from hydropower over time
- Japan
- Vietnam
How they compare
Vietnam currently reports 101.83 terawatt-hours against 74.25 terawatt-hours in Japan, a difference of 27.58 terawatt-hours.
That makes Vietnam's figure about 1.4 times Japan's.
The two have swapped places 3 times across 61 shared years of data; in 1965 it was Japan ahead.
Japan ranks 9th and Vietnam ranks 8th of 77 countries.
Across the 7 decades both report, Japan averaged higher in 6 and Vietnam in 1.
Head to head by decade
| Decade | Japan | Vietnam | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 74.55 terawatt-hours | 0.436 terawatt-hours | 74.12 terawatt-hours | Japan |
| 1970s | 78.49 terawatt-hours | 0.5933 terawatt-hours | 77.9 terawatt-hours | Japan |
| 1980s | 83.39 terawatt-hours | 1.73 terawatt-hours | 81.66 terawatt-hours | Japan |
| 1990s | 83.37 terawatt-hours | 9.52 terawatt-hours | 73.84 terawatt-hours | Japan |
| 2000s | 81.73 terawatt-hours | 20.24 terawatt-hours | 61.48 terawatt-hours | Japan |
| 2010s | 80.85 terawatt-hours | 59.81 terawatt-hours | 21.04 terawatt-hours | Japan |
| 2020s | 76.85 terawatt-hours | 86.44 terawatt-hours | 9.59 terawatt-hours | Vietnam |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher primary energy from hydropower, Japan or Vietnam?
- Vietnam, at 101.83 terawatt-hours against 74.25 terawatt-hours in Japan as of 2025.
- What is the difference in primary energy from hydropower between Japan and Vietnam?
- 27.58 terawatt-hours, with Vietnam ahead.
- How many years of comparable data are there for Japan and Vietnam?
- 61 years are reported by both, from 1965 to 2025.
- How do Japan and Vietnam rank globally for primary energy from hydropower?
- Japan ranks 9th and Vietnam ranks 8th of 77 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 hydropower. 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.