In the actual data available for 2023, Japan's climate change-related energy tax revenue stood at a historical figure from which the growth in 2024 represents a baseline estimate. The forecasts from 2024 to 2028 indicate a gradual decline in revenue, with year-on-year decreases ranging from approximately 1.3% to 1.4%. Over the five-year period, from 2024 to 2028, the compound annual growth rate (CAGR) suggests a steady decrease in revenue. This downward trend highlights potential shifts in Japan's energy policy or market behavior related to climate change initiatives.

Future trends to watch for include:

Changes in Japanese government policies regarding renewable energy incentives or carbon taxes.
Technological advancements that may reduce reliance on conventional energy sources.
Societal shifts toward energy efficiency and green technology adoption which could further impact tax revenue.
International agreements or pressures that influence Japan's climate-related fiscal strategies.