Figure shows the total cost of a 31 cm well, including contingency and direct costs in 2019 dollars, for all well models considered in this analysis. For example, most models predict a 31 cm, 3 km geothermal well costs approximately 8 M$ in 2019. Figure shows the percent difference between the average cost of all wells at a given depth and the cost curves of GETEM, GeoVision, Lukawski et al. (2014), Klein et al. (2004), and genGEO. The average cost is the average of the cost of the Lukawski et al. (2014), GeoVision 'Baseline SD', and GeoVision 'Baseline LD' models at each depth. GEOPHIRES essentially uses the GeoVision 'Baseline' cost relationships and is thus excluded from the figure.