In this supplemental information, we provide several models which are all coupled and interconnected within genGEO. The models are: Section S2) the levelized cost of electricity (LCOE) model, Section ) the capital cost model, Section S4) the operating cost model, Section S5) the surface power plant model, Section S6) the well flow model, Section S7) the geologic model, and Section S8) the wellfield layout model. In the main text, we combine the LCOE and operating cost models into a single section, but we separate them here for clarity.