Figure shows the supply curves for sedimentary basin geothermal power plants in the U.S. based on p50 data and a geothermal temperature gradient of 35 °C/km. The SAU code of each reservoir is listed at the end of the individual reservoir capacity. The volume of CO₂ that is required to realize these supply curves with CO 2 -power plants is shown on the right y-axis. As references, the current total installed geothermal capacity in the U.S. of 3.8 GW e is shown at the start of the x-axis, and the 85 $/MW e -h line is plotted in red, which is the 2019 average geothermal electricity power purchase agreement (PPA) across Ormat contracts. Figure suggests that the order of lowest cost sedimentary basin resources may be different when CO 2 is used compared to when water is used. For example, the second-lowest cost reservoir when CO 2 is used is the Upper Miocene (C50470126), but this reservoir is the third-lowest cost when water is used. As a result, while our discussion has focused on CO 2 -versus water-based power plants, it is possible that these two different types of power plants may not compete against one another for sedimentary basins.