Bellona – CO2 Storage, Apr 2024

Bellona's "CO2 Storage" report, published in April 2024, provides a comprehensive analysis of geological storage options for carbon dioxide (CO₂) as a critical component of Carbon Capture and Storage (CCS) strategies. The report emphasizes the importance of selecting appropriate reservoirs with high porosity and permeability to ensure large storage capacity and efficient injection rates. It discusses the necessity of multiple layers of cap rocks and increased storage depth to enhance storage security. Additionally, the report highlights the need for detailed geomechanical assessments to prevent compromising cap rocks and inducing seismic activity. Open-access monitoring and verification mechanisms are advocated to guarantee permanent CO₂ storage and facilitate industry knowledge-sharing, thereby building public confidence in CCS technology. The report also addresses the evaluation of old wells and faults that could jeopardize containment, underscoring the role of competent authorities and fit-for-purpose regulations in managing risks responsibly while promoting industry growth. Special consideration is advised for regions with significant seismic activity when implementing CCS.