For CO 2 -geothermal power plants, we estimate the amount of CO₂ required for a 5-spot by multiplying the 5-spot pore space volume by the density of CO₂ in the basin and the 36% storage factor, which is the approximate percentage of the pore space volume that is required to be saturated with CO 2 for CO 2 -geothermal (i.e. CPG) power generation. The pore space volume is the product of the basin porosity, surface area (1 km 2 ), and basin thickness. We then divide the CO₂ storage potential for each basin, as calculated by the USGS, by the CO₂ required per 5-spot to obtain the number of 5-spots which can be built in a basin. Finally, we multiply the electricity generated by a single 5-spot by the number of 1 km 2 footprint 5-spots in that basin to find the basin-wide CO₂ electricity generating capacity. This supply curve assessment assumes using only saline aquifers, but it is possible that depleted oil/gas fields may also be used for CO 2geothermal sedimentary basin power plants.