The CCUS I session focuses on advancing CCUS technologies. Key topics include CO2 storage capacity assessment in California, the integration of enhanced oil recovery (EOR) with CO2 storage to optimize economic and environmental benefits, and the role of CCUS in driving California's clean energy transition. By leveraging insights from numerical modeling and experimental studies, this session seeks to foster collaboration and drive innovation to address regulatory, economic, and technical challenges, contributing to sustainable climate mitigation efforts worldwide.