India vs Japan: Hydropower generation by region
India
178.2 terawatt-hours
in 2025
Japan
74.25 terawatt-hours
in 2025
India rank
6th
Japan rank
9th
Hydropower generation by region over time
- India
- Japan
How they compare
India currently reports 178.2 terawatt-hours against 74.25 terawatt-hours in Japan, a difference of 103.95 terawatt-hours.
That makes India's figure about 2.4 times Japan's.
The two have swapped places 3 times across 61 shared years of data; in 1965 it was Japan ahead.
India ranks 6th and Japan ranks 9th of 79 countries.
Across the 7 decades both report, India averaged higher in 3 and Japan in 4.
Head to head by decade
| Decade | India | Japan | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 23.23 terawatt-hours | 74.55 terawatt-hours | 51.33 terawatt-hours | Japan |
| 1970s | 40.07 terawatt-hours | 78.49 terawatt-hours | 38.42 terawatt-hours | Japan |
| 1980s | 53.74 terawatt-hours | 83.39 terawatt-hours | 29.65 terawatt-hours | Japan |
| 1990s | 74.24 terawatt-hours | 83.37 terawatt-hours | 9.13 terawatt-hours | Japan |
| 2000s | 94.16 terawatt-hours | 81.73 terawatt-hours | 12.44 terawatt-hours | India |
| 2010s | 132.74 terawatt-hours | 80.85 terawatt-hours | 51.89 terawatt-hours | India |
| 2020s | 163.97 terawatt-hours | 76.85 terawatt-hours | 87.12 terawatt-hours | India |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher hydropower generation by region, India or Japan?
- India, at 178.2 terawatt-hours against 74.25 terawatt-hours in Japan as of 2025.
- What is the difference in hydropower generation by region between India and Japan?
- 103.95 terawatt-hours, with India ahead.
- How many years of comparable data are there for India and Japan?
- 61 years are reported by both, from 1965 to 2025.
- How do India and Japan rank globally for hydropower generation by region?
- India ranks 6th and Japan ranks 9th of 79 countries.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026) – with major processing by Our World in Data, published as Hydropower generation by region. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Figures are based on gross primary hydroelectric generation and do not account for cross-border electricity supply.