Asia · country explainer · estimated data
Japan's power sector in numbers
Ember monthly data 2018-04 → 2026-03 · generation-weighted · CC-BY-4.0
Carbon intensity · 2026-03
441gCO₂e/kWh
#49 cleanest of 80 tracked (2025)
Renewables share
30.2%
clean incl. nuclear: 39.5%
Records
Cleanest: 370 (2025-05)
Dirtiest: 563 (2021-01)
The trend, year by year
| Year | gCO₂e/kWh | Δ | Renewables % | Generation TWh |
|---|---|---|---|---|
| 2025 | 451 | -6 | 27 | 927.5 |
| 2024 | 457 | -11 | 26.3 | 913.6 |
| 2023 | 468 | -30 | 25.5 | 911.4 |
| 2022 | 498 | +5 | 23.4 | 931.5 |
| 2021 | 493 | -16 | 22.6 | 926.9 |
| 2020 | 509 | +1 | 21.1 | 903.6 |
| 2019 | 508 | — | 18.6 | 932.7 |
See Japan on the globe. The terminal paints every tracked country's carbon intensity and renewables share worldwide — and the carbon story animates the whole decade.
Open the globe →Source: "Monthly electricity data, Ember" (CC-BY-4.0). Yearly figures are generation-weighted (Σ emissions ÷ Σ generation, complete years only). Monthly statistical data — estimated, not live measurement. Cite as "Voltcast Research, voltcast.com/research/countries/jp".