The secondary equipment cost fraction, , in genGEO is taken from NETL (2012) cost estimates for new coal plants. In each of the 14 subsystems identified in the pulverized coal with a subcritical Rankine cycle and without CO 2 capture system (Case 9) by NETL ( ), the single largest piece of equipment was compared against the total equipment cost for the subsystem. On average, the total equipment cost was 39% greater than the single largest piece of equipment, and thus we set 1.39.