The genGEO surface plant capital cost model is a bottom-up cost model, meaning the cost of the essential equipment is estimated and upscaled to determine the total cost. In this way, the capital costs have a fundamental cost basis and modifications to the cost of fundamental equipment can be propagated through the model. For instance, the CPG surface power plant cost is substantively the cost of three components (i.e. turbine, cooling towers, and injection pump) and the cost of each component is determined from the thermodynamic data of the power cycle. Then a multiplier is applied to the primary equipment to account for construction, labor, etc. So when the power generation of the turbine increases, or the approach temperature of the cooling tower increases, the cost of the surface plant reflects those changes.