Background to the Study

This report builds upon previous studies on the topic of carbon capture and utilisation (CCU) published by the IEA Greenhouse Gas R&D Programme (IEAGHG 2018a, IEAGHG 2018b, IEAGHG 2018c, IEAGHG 2019). 

First, an update on recent CCU policy developments is set out.  Second,  previous  research  and  analysis  is assembled  into  a  model  –  the  Greenhouse  Gas Emissions Model for CCU (GEMCCU) – to examine the emission reduction potential of CCU on an integrated basis. GEMCCU is used to assess the potential of a portfolio of CCU technologies to contribute towards Japan’s climate change mitigation goals in 2030 and 2050.  

Contributions Towards Japan’s Climate Change Mitigation Goals

Using two scenarios – ‘scenario 2030’ and ‘scenario 2050’ involving, respectively, 5 and 25 MtCO2 utilised – various combinations of CO2 sources and end use pathways, and a range of key sensitivities (accounting mode, source of electricity, various process efficiency improvements), an assessment is made of the potential of CCU to contribute towards Japan’s climate mitigation goals.