The Oil and Gas Climate Initiative has put together a CO2 storage resource catalogue covering more than 700 potential geological sites in 18 countries. The catalogue estimates potential global carbon dioxide storage capacity at roughly 13,000 gigatonnes – more than enough to meet projected needs for CCUS over the coming century. Around 550 gigatonnes is identified as ‘discovered capacity’ – sites where at least one well has been drilled to establish the potential for carbon dioxide storage. Further exploration is expected to reveal many more such sites.