Due to their generally high temperatures, EGS resources are an enticing option for low-cost geothermal power because, holding everything else constant, cost decreases as the temperature of the subsurface increases. But everything else is not held constant between EGS and hydrothermal resources, managing induced seismicity during hydraulic stimulation is challenging, and only a small fraction of the vast EGS resource potential is viable to be developed from a cost perspective without the development of novel technologies that reduce the cost of drilling and hydraulic stimulation. Sedimentary basins are another option for expanding the geothermal resource base. In contrast to EGS resources, low-cost development of sedimentary basins for power generation is not contingent on advances in drilling and fracturing technology because these formations are naturally porous and permeable and do not require artificial stimulation. Additionally, sedimentary basins are ubiquitous, underlying approximately half of all land on Earth. Despite these advantages and a lack of research justifying their exclusion, sedimentary basins are typically not considered for electricity generation. For example, without providing any reasoning for doing so, the 2019 U.S. Department of Energy GeoVision study excluded sedimentary basins when estimating the geothermal electricity generation potential in the U.S. While typically excluded, it is possible to generate electricity with sedimentary basin geothermal resources using either in-situ brine or geologically stored CO 2 as the heat extraction fluid. And because sedimentary basins are also the primary targets for geologic CO 2 storage, sedimentary basin CO 2 -geothermal power plants, typically referred to a CO 2 -Plume Geothermal (CPG) power plants , may have beneficial synergies with CO 2 capture and storage (CCS) processes that increase their value to decarbonization efforts. Despite this potential, the cost of generating electricity with sedimentary basins has not been robustly studied and the potential that sedimentary basins have for expanding the geothermal resource base is unknown.