Intensity target and CO2 capture and storage

Abstract

Industries have various kinds of voluntary approaches to mitigate climate change through international industrial associations. Sector based intensity target based on the bottom-up technological information is proposed as one of climate policies and it is compatible with industrial voluntary approaches in many cases. Carbon dioxide capture and storage (CCS) technology is one of climate mitigation options in energy sector, especially in power generation. Energy, macroeconomy and climate modules in integrated assessment model GRAPE (Global Relationship to Protect the Environment) was used for the analysis. In relatively complex energy demand and supply representation in energy module, CO2 capture from power generation was assumed. The author assumed that CO2 intensity target would converge among global regions in the three energy sectors (i.e. power generation, transport, and other sectors) and that almost zero CO2 emissions will be realized in the end of 21st century. Sensitivity analysis was conducted by changing the CCS cost settings and degree of nuclear power capacity limit. CO2 capture power capacity role in the power generation portfolio and changes in generation cost is discussed.