Input-output Analysis of the Changes in CO<sub>2</sub> Emissions of Optimal Inter-regional Power Flow and Its Application for Analysis of Next-generation Energy System

WASHIZU Ayu, ITA Sayaka

doi:10.11353/sesj.36.145

<p>We expanded the extended input-output table for analysis of next-generation energy systems for the year 2030 (IONGES, 2011 edition) to 9 regions. We created two inter-regional IONGES; the first is a table based on conservative assumptions (conservative case) and the other is a table that follows ambitious assumptions (ambitious case). The ambitious case reflects the results of calculations to minimize the cost of thermal power generation. This was done by avoiding curtailment of renewable energy output as far as possible by activating inter-regional power transmission. The total domestic production value of electricity in the two tables is the same as the real value for 2011. However, they differ in the composition ratio of power generation by region, power source type, and the amount of transmission between regions. Because the consumption activity of each region induces CO₂ emissions in all other regions, we calculated the amount of CO₂ induced directly and indirectly by each of the two cases. We found that the total CO₂ emissions resulting from final consumption in all regions decreased in the ambitious case. In the ambitious case, it was found that the CO₂ reduction effect in the supply chain of assembled goods and light industrial goods is high.</p>

Input-output Analysis of the Changes in CO<sub>2</sub> Emissions of Optimal Inter-regional Power Flow and Its Application for Analysis of Next-generation Energy System

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