Minimization of electric cost requires that the cost of the entire geothermal system be known. The ORC surface plant can't be cost-minimized by itself. The cost per unit electricity generated by an ORC by itself is minimized by essentially generating zero electricity (i.e. 0% second-law efficiency), when the heat exchanger pinch temperature difference is maximized. As the secondlaw efficiency (i.e. utilization efficiency) of an ORC is increased, both the electric power and total ORC cost increase. If the non-ORC costs are high, a higher efficiency (and more expensive) power plant may minimize LCOE than when the non-ORC costs are lower. Thus, the non-ORC costs must be also known (i.e. wells, wellfield, etc.). GETEM determines the ORC second-law efficiency to minimize LCOE using an EXCEL macro. However, the specifics of this GETEM optimization are not known as GETEM only provides equations which calculate electric power and cost as a function of second-law efficiency.