In genGEO, the ORC boiling temperature and heat exchanger pinch temperature difference which minimize LCOE are determined for a "test case" and stored in a lookup table. Conversely, the code could be modified so this optimization is performed with every simulation. In the "test case" used in genGEO, the geofluid production rate is 400 kg/s and the total non-ORC cost is the cost of two wells drilled to a depth necessary to obtain the ORC inlet temperature given a 15°C surface temperature and a 35 °C/km geologic temperature gradient. At every geofluid production temperature, the ORC design temperatures are found to minimize the cost per unit electricity generated in this "test case".