A national-scale high-resolution CCUS-shared pipeline layout for retrofitting multisectoral plants via onshore-offshore geological storage
Kai Li, Yifan Mao, Jing‐Li Fan, Jizhe Li, Xiangqian Li, Jiayu Li, Xiaojuan Xiang, Changwan Gu, Xian‐Ming Zhang
Abstract
Carbon capture utilization and storage (CCUS) is an indispensable process to mitigate climate change. However, a precise and feasible CCUS layout with realistic geospatial connectivity is essential to support the prospective deployment of multisectoral plants on a national scale. This study proposed an onshore-offshore CCUS source-sink matching model, distinguished by CO 2 source-sink dataset enhancement, realistic pipeline network optimization, and onshore-offshore geospatial connectivity to accurately map China's high-resolution CCUS layout. The findings showed that China's multisectoral CCUS supply potential of coal-fired power, steel, cement, and coal chemicals was approximately 1.75, 0.77, 0.56, and 0.23 Gt/a CO 2 , respectively. A complete geospatial connectivity pattern was established by connecting 1186 multisectoral CO 2 sources with 307 onshore and 22 offshore storage sites via the shared pipeline network of 80,700 km, involving plant-level cost heterogeneity, industry competition, and CCUS cluster identification. This model can be applied to other countries or globally to enhance CCUS layout strategies.