Geological storage of anthropogenic point-source carbon dioxide (CO2) increasingly is becoming viewed as an important strategy for mitigation of greenhouse gas emissions, and has the potential to be deployed globally in many different regions. In our analysis, we assumed that large-volume CO2 point sources will seek to sequester their CO2 in regional reservoirs. We considered sedimentary basins on land and continental shelves. We examined options for saline aquifers, enhanced oil recovery, and coal storage based on calculated volumes and costs. Shelf and land options were treated as separate options, as were very deep saline aquifers. Sedimentary basins were counted broadly as targets, while cratonal areas were excluded. Within basins, pore-volume estimates were made for targets below the critical point of CO2 assuming typical crustal heat flux and lithostatic pressure.