Ireland vs Japan: Wind energy generation vs. installed capacity
Ireland
12,058 terawatt-hours
in 2025
Japan
12,837 terawatt-hours
in 2025
Ireland rank
27th
Japan rank
24th
Wind energy generation vs. installed capacity over time
- Ireland
- Japan
How they compare
Japan currently reports 12,837 terawatt-hours against 12,058 terawatt-hours in Ireland, a difference of 779 terawatt-hours.
That makes Japan's figure about 1.1 times Ireland's.
The two have swapped places 4 times across 36 shared years of data; in 1990 it was Japan ahead.
Ireland ranks 27th and Japan ranks 24th of 79 countries.
Across the 4 decades both report, Ireland averaged higher in 3 and Japan in 1.
Head to head by decade
| Decade | Ireland | Japan | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 47.51 terawatt-hours | 4.92 terawatt-hours | 42.59 terawatt-hours | Ireland |
| 2000s | 1,225 terawatt-hours | 1,620 terawatt-hours | 394.83 terawatt-hours | Japan |
| 2010s | 6,070 terawatt-hours | 5,487 terawatt-hours | 583.05 terawatt-hours | Ireland |
| 2020s | 11,441 terawatt-hours | 10,200 terawatt-hours | 1,240 terawatt-hours | Ireland |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher wind energy generation vs. installed capacity, Ireland or Japan?
- Japan, at 12,837 terawatt-hours against 12,058 terawatt-hours in Ireland as of 2025.
- What is the difference in wind energy generation vs. installed capacity between Ireland and Japan?
- 779 terawatt-hours, with Japan ahead.
- How many years of comparable data are there for Ireland and Japan?
- 36 years are reported by both, from 1990 to 2025.
- How do Ireland and Japan rank globally for wind energy generation vs. installed capacity?
- Ireland ranks 27th and Japan ranks 24th 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 Wind energy generation vs. installed capacity. 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.