The standard reservoir model in genGEO is a 1-D Darcy analytical solution for simulating the pressure decline in homogeneous, isotropic, and porous reservoir. We use this model because it provides a relatively precise solution for reservoir impedance while substantially reducing the computational requirements compared to reservoir simulators (e.g. TOUGH2) that have been extensively used to study geothermal energy. But similar to GEOPHIRES, the user can apply results they generated with separate reservoir simulators to genGEO by modifying the relevant python models, if desired (Section S7). Similarly, the pressure drop through EGS or hydrothermal resources may be simulated by calculating an effective transmissivity, as is the case of the Tungsten Mountain simulations we performed to validate genGEO in this study (Section 3.1.3).