Geothermal power plants have the potential to provide value to decarbonizing electricity because they can produce dispatchable and renewable electricity with little to no CO 2 emissions. Despite this value, the market penetration of geothermal is low (e.g. generating ~0.3% of all electricity globally in 2018 ) and will not substantially increase if the cost is too high. As cost is largely a function of geology and there are limited identified hydrothermal geothermal resources in the developed world not already in use (e.g. about ~6 GW e in the U.S. ), research is investigating using alternative geologic resources for geothermal power generation. Sedimentary basin geothermal resources are one option, but the potential these resources have for expanding the geothermal resource base is unknown.