Structural Decomposition Analysis of Japan’s Energy Transitions and Related CO2 Emissions in 2005–2015 Using a Hybrid Input-Output Table

Abstract This study investigates Japan’s energy transitions in 2005–2015, which involved massive economic disruptions due to the 2011 Great East Japan earthquake and Recession. A hybrid input-output (IO) table that conforms conservation condition was newly compiled by integrating Japanese energy-balance linked-IO tables. employed conduct a structural decomposition analysis (SDA), attributes changes consumption CO 2 emissions effects of intensity, structure, domestic final demand, export. These were successfully segregated into profile sources. The results revealed effect became dominant driver for decisively reducing manufacturing service sectors latter period 2011–2015. suggested it took time materialize energy-saving innovations response sudden disruptions. Over entire period, largest contributing overall reductions, part because other tended cancel out either between sources or periods. Therefore, sensible way transform less energy-intensive, carbon-free society future is improve non-energy input structures sectors.