Hydropower generation by region in Japan
Japan: Hydropower generation by region was 74.25 terawatt-hours in 2025. ▬ Flat
Hydropower generation by region in Japan, 1965–2025
Source: Energy Institute - Statistical Review of World Energy (2026) – with major processing by Our World in Data. Measured in terawatt-hours.
Analysis
Japan recorded 74.25 terawatt-hours for hydropower generation by region in 2025.
The figure is down 6.6% on the previous year and down 13.4% over ten years.
Over the whole period, hydropower generation by region in Japan peaked at 94.42 terawatt-hours in 1991 and was at its lowest, 64.46 terawatt-hours, in 1994.
That places Japan 9th out of 79 countries with data for 2025, putting it in the top quarter.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 74.55 terawatt-hours | 68.55 terawatt-hours | 79.35 terawatt-hours | 5 |
| 1970s | 78.49 terawatt-hours | 66.78 terawatt-hours | 85.1 terawatt-hours | 10 |
| 1980s | 83.39 terawatt-hours | 71.62 terawatt-hours | 91.74 terawatt-hours | 10 |
| 1990s | 83.37 terawatt-hours | 64.46 terawatt-hours | 94.42 terawatt-hours | 10 |
| 2000s | 81.73 terawatt-hours | 70.47 terawatt-hours | 92.47 terawatt-hours | 10 |
| 2010s | 80.85 terawatt-hours | 73.92 terawatt-hours | 88.5 terawatt-hours | 10 |
| 2020s | 76.85 terawatt-hours | 74.25 terawatt-hours | 79.63 terawatt-hours | 6 |
Countries ranked near Japan
More economy & growth data for Japan
- External balance on goods and services as a percent of GDP -0.9% (2024)
- Inflation of consumer prices 3.2% (2025)
- GDP per capita 38,619 constant 2015 US$ (2025)
- Share of manufacturing in gross domestic product (GDP) 18.8% (2024)
- Gross domestic product (GDP) 4.76 trillion constant 2015 US$ (2025)
- GDP per capita in international and market dollars 38,619 constant 2015 US$ (2025)
- DEC alternative conversion factor 149.66 LCU per US$ (2025)
- Net secondary income (Net current transfers from abroad) -4.25 trillion current LCU (2024)
- Net secondary income (Net current transfers from abroad) -28.09 billion current US$ (2024)
- Taxes less subsidies on products 3.66 trillion current LCU (2024)
Frequently asked questions
- What is hydropower generation by region in Japan?
- Hydropower generation by region in Japan was 74.25 terawatt-hours in 2025, according to Energy Institute - Statistical Review of World Energy (2026) – with major processing by Our World in Data.
- What is the highest hydropower generation by region recorded in Japan?
- The highest recorded value was 94.42 terawatt-hours in 1991.
- What is the lowest hydropower generation by region recorded in Japan?
- The lowest recorded value was 64.46 terawatt-hours in 1994.
- How does Japan rank for hydropower generation by region?
- Japan ranks 9th out of 79 countries with data for 2025.
- Is hydropower generation by region rising or falling in Japan?
- Over the last ten years it is down 13.4%. The long-run trend across the full record is flat.
- Where does this Japan data come from?
- The figures come from Energy Institute - Statistical Review of World Energy (2026) – with major processing by Our World in Data, published as part of Hydropower generation by region. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 61 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Figures are based on gross primary hydroelectric generation and do not account for cross-border electricity supply.