Figure shows the electricity generation per kilogram geofluid produced (i.e. kJ e / kg geofluid ) and ORC specific capital cost (i.e. surface plant specific capital cost) as a function of inlet temperature. The electricity generation per unit geofluid is sometimes called "ORC Specific Power" or "Brine Effectiveness". The "Utilization Efficiency" or "Second-law efficiency" of the surface plant describe the same concept as ORC specific power, but are instead the ratio of ORC specific power to the maximum possible at that temperature (i.e. exergy available). Figure shows costs for a 10 MW e plant.