Annual patents filed for energy storage technologies in Japan
Japan: Annual patents filed for energy storage technologies was 953 patents in 2025. ◆ Volatile
Annual patents filed for energy storage technologies in Japan, 2000–2025
Source: IRENA – INSPIRE Platform (2026) – with major processing by Our World in Data. Measured in patents.
Analysis
In 2025, annual patents filed for energy storage technologies in Japan stood at 953 patents. That is the lowest value across all 26 years on record.
The figure is down 76.5% on the previous year and down 84.8% over ten years.
Over the whole period, annual patents filed for energy storage technologies in Japan peaked at 16,515 patents in 2023 and was at its lowest, 953 patents, in 2025.
Japan ranks 3rd of 58 countries on this measure, in the top 10%.
The series is highly variable year to year, so single readings are best treated with caution.
Annual patents filed for energy storage technologies in Japan, year by year
| Year | patents | Change |
|---|---|---|
| 2000 | 4,645 patents | — |
| 2001 | 4,413 patents | -5.0% |
| 2002 | 3,943 patents | -10.7% |
| 2003 | 3,428 patents | -13.1% |
| 2004 | 3,463 patents | +1.0% |
| 2005 | 3,486 patents | +0.7% |
| 2006 | 3,806 patents | +9.2% |
| 2007 | 3,912 patents | +2.8% |
| 2008 | 4,423 patents | +13.1% |
| 2009 | 4,667 patents | +5.5% |
| 2010 | 5,990 patents | +28.3% |
| 2011 | 7,411 patents | +23.7% |
| 2012 | 7,764 patents | +4.8% |
| 2013 | 7,010 patents | -9.7% |
| 2014 | 6,749 patents | -3.7% |
| 2015 | 6,289 patents | -6.8% |
| 2016 | 6,601 patents | +5.0% |
| 2017 | 7,367 patents | +11.6% |
| 2018 | 8,364 patents | +13.5% |
| 2019 | 9,386 patents | +12.2% |
| 2020 | 10,327 patents | +10.0% |
| 2021 | 12,709 patents | +23.1% |
| 2022 | 15,384 patents | +21.0% |
| 2023 | 16,515 patents | +7.4% |
| 2024 | 4,063 patents | -75.4% |
| 2025 | 953 patents | -76.5% |
Japan compared with similar countries
- Japan's 953 patents is above the median for high income countries, which is 4 patents, 238.2× the median. (40 countries reporting)
- Japan's 953 patents is above the median for East Asia & Pacific, which is 20 patents, 47.6× the median. (9 countries reporting)
Biggest year-on-year movements
Years where Annual patents filed for energy storage technologies in Japan changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 2025 | -76.5% | 4,063 patents | 953 patents |
| 2024 | -75.4% | 16,515 patents | 4,063 patents |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 4,019 patents | 3,428 patents | 4,667 patents | 10 |
| 2010s | 7,293 patents | 5,990 patents | 9,386 patents | 10 |
| 2020s | 9,992 patents | 953 patents | 16,515 patents | 6 |
Countries ranked near Japan
- 1 China 7,832 patents compare
- 2 United States 993 patents compare
- 4 South Korea 295 patents compare
- 5 Canada 130 patents compare
- 6 Mexico 80 patents compare
More energy & mining data for Japan
- Fossil fuel consumption by fuel, per unit of GDP 0 terawatt-hours per US$ of GDP (2025)
- Primary energy use, annual growth rate -0.7535 % change on previous year (2025)
- Coal consumption, per capita 0 terawatt-hours per person (2025)
- Coal consumption, per unit of GDP 0 terawatt-hours per US$ of GDP (2025)
- Primary energy use, per unit of GDP 0 terawatt-hours per US$ of GDP (2025)
- Primary energy use, per capita 0 terawatt-hours per person (2025)
- Coal production, per capita 0 terawatt-hours per person (2025)
- Coal production, per unit of GDP 0 terawatt-hours per US$ of GDP (2025)
- Fossil fuel consumption by fuel, per capita 0 terawatt-hours per person (2025)
- Fuel imports 19.6% (2025)
Frequently asked questions
- What is annual patents filed for energy storage technologies in Japan?
- Annual patents filed for energy storage technologies in Japan was 953 patents in 2025, according to IRENA – INSPIRE Platform (2026) – with major processing by Our World in Data.
- What is the highest annual patents filed for energy storage technologies recorded in Japan?
- The highest recorded value was 16,515 patents in 2023.
- What is the lowest annual patents filed for energy storage technologies recorded in Japan?
- The lowest recorded value was 953 patents in 2025.
- How does Japan rank for annual patents filed for energy storage technologies?
- Japan ranks 3rd out of 58 countries with data for 2025.
- Is annual patents filed for energy storage technologies rising or falling in Japan?
- Over the last ten years it is down 84.8%. The long-run trend across the full record is volatile.
- Where does this Japan data come from?
- The figures come from IRENA – INSPIRE Platform (2026) – with major processing by Our World in Data, published as part of Annual patents filed for energy storage technologies. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 26 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Figures in recent years are subject to a time lag; submitted patents may not yet be reflected in the data.