In our first comparison, we compare the electricity generated and cost for a geothermal power plant with the same base-case parameters (Table ) between genGEO, GETEM, and GEOPHIRES. This comparison illustrates different optimization strategies: system mass flowrate and cost-minimization versus electricity-maximization. As shown in Figure , the genGEO water-based power plant has an electricity generation maximum near 120 kg/s per well, while the GEOPHIRES power plant has a maximum at a flowrate of 70 kg/s, even though identical inputs were used in both tools (Table ). Further, at their respective flowrates of maximum electricity generation, the GEOPHIRES power plant generates approximately half the electricity of the genGEO power plant and the GETEM power plant generates approximately double the genGEO power plant. These differences are probably the result of different assumptions within GETEM and GEOPHIRES, but it is difficult to examine further without the underlying ASPEN ORC models.