CIS (EI) vs Japan: Solar energy generation by region
CIS (EI)
15.22 terawatt-hours
in 2025
Japan
110.79 terawatt-hours
in 2025
CIS (EI) rank
2nd
Japan rank
4th
Solar energy generation by region over time
- CIS (EI)
- Japan
How they compare
Japan currently reports 110.79 terawatt-hours against 15.22 terawatt-hours in CIS (EI), a difference of 95.57 terawatt-hours.
That makes Japan's figure about 7.3 times CIS (EI)'s.
Across all 37 years both countries report, Japan has been ahead every year.
CIS (EI) ranks 2nd and Japan ranks 4th of 2 groups.
Japan has averaged higher in every one of the 5 decades both report.
Head to head by decade
| Decade | CIS (EI) | Japan | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | β |
| 1990s | 0 terawatt-hours | 0.0616 terawatt-hours | 0.0616 terawatt-hours | Japan |
| 2000s | 0 terawatt-hours | 1.53 terawatt-hours | 1.53 terawatt-hours | Japan |
| 2010s | 0.468 terawatt-hours | 31.31 terawatt-hours | 30.84 terawatt-hours | Japan |
| 2020s | 7.59 terawatt-hours | 92.47 terawatt-hours | 84.88 terawatt-hours | Japan |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher solar energy generation by region, CIS (EI) or Japan?
- Japan, at 110.79 terawatt-hours against 15.22 terawatt-hours in CIS (EI) as of 2025.
- What is the difference in solar energy generation by region between CIS (EI) and Japan?
- 95.57 terawatt-hours, with Japan ahead.
- How many years of comparable data are there for CIS (EI) and Japan?
- 37 years are reported by both, from 1965 to 2025.
- How do CIS (EI) and Japan rank globally for solar energy generation by region?
- CIS (EI) ranks 2nd and Japan ranks 4th of 2 groups.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026) β with major processing by Our World in Data, published as Solar energy 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 generation and do not account for cross-border electricity supply.