This paper assesses the potential for improving the CO2 intensity of Japan’s electricity sector—the units of carbon dioxide emitted per units of electricity generated—by examining the potential for the feasibility of restarting nuclear power plants and increasing renewable electricity generation by 2030.

This study conducted a comparative assessment of 48 greenhouse gas (GHG) emissions reduction scenarios for 2030 reported in seven studies published since 2011 based on bottom-up energy system analyses. This study conducted two sets of analyses.

Investment in low carbon technologies has been growing over the past few years. However, in order to replace conventional high energy/high carbon intensity technologies with low carbon ones and reduce GHG emissions, innovative financial schemes are needed in order to effectively utilise limited global financing resources.