In the other cases we use base-case inputs (Table ), but with one injection well and one production well, and two different depths: 2.5 km (base-case reservoir depth) and 3.6 km deep. We use 3.6 km deep reservoirs because this results in the same reservoir temperature as the Tungsten case. In the 2.5 km and 3.6 km cases, we report GEOPHIRES and GETEM costs for flowrates that minimized cost, which we found by manually iterating with the tools.