Figure compares the cost relationships of Table in terms of specific pump cost. The specific pump cost is the ratio of pump cost to pump power. GETEM provides two different costs for iron circulation and injection pumps which are very similar. Thus, we neglect the GETEM circulation pump relationship and use the injection pump relationship for all surface pumps in genGEO. Additionally, GETEM sets an upper limit of 1.5 MW e for its injection pump cost relationship; however, when extrapolated, this curve extends nicely through the NETL pump cost data points. Thus, in genGEO, the GETEM surface pump costs are used for all pump sizes.