The exploration drilling cost assumed by GETEM is for two successful exploration wells drilled at a 50% success rate (i.e. 4 wells drilled total). Each of these wells cost 20% more than a standard water production well of the same size. The additional well characterization cost includes coring, collecting, and analyzing reservoir rock samples. The exploration wells are used as either monitoring or water production wells after the exploration phase, so only the additional 20% characterization cost suggested by GETEM for a well is included in genGEO for characterization wells. Similar to GETEM, the Kemper site also includes two characterization wells ( ) with an additional cost of 28% each. However, Kemper assumes a success rate of 100% due to the porous and homogenous nature of their wellfield. Thus, we assume the additional cost for characterization, ∆