Assessment of CO2 storage potential and carbon capture, utilization and storage prospect in China

Abstract Carbon capture, utilization and storage (CCUS) is regarded as a very promising technology to reduce CO 2 emission in China, which could improve the contradiction between economic development and environment protection. In order to study the CO 2 storage potential for deploying CCUS projects in China, considering China's special geological features and current national conditions, a new evaluation method of CO 2 storage capacity was proposed using the mass balance approach combined with various CO 2 storage mechanisms in different formations, and the CO 2 storage capacity was calculated in saline aquifer for CO 2 -EWR, oil reservoir for CO 2 -EOR and coal bed for CO 2 -ECBM respectively. The result shows that China has great CO 2 storage potential, which is estimated to be over 1841 Gt. The different features and application prospect of CO 2 -EWR, CO 2 -EOR and CO 2 -ECBM in China were analyzed, which give guidance on critical technologies breakthrough and costs reduction along the CCUS chain. With the joint effort and support by policy and finance, CCUS will make great contribution to the development of low carbon economy for China and the world.