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COE = 20.8 + 17.1 + 3.3 = $41.2/MWh, or4.1cents/kWh 9.4.2 CapitalCostDevelopment There is a need for an easily understood, flexible, and reasonably accurate methodology for rapidly estimating the cost of conceptual fuel cell power plants. One method proposed for estimating the cost of fuel cell power plants is to calculate distributive (bulk) costs as a function of the equipment cost using established factors based on conventional generating technologies. When applied to compensate for the differences associated with a fuel cell plant, this approach can yield reasonable results. Based on the international prominence of the Association for the Advancement of Cost Engineering (AACE), this approach is useful for conceptualizing the costs for fuel cell/turbine power plant systems. Typical factors in common use are listed in Table 9-2. These factors apply to processes operating at temperatures in excess of 400 oF at pressures of under 150 psig, and are taken from the AACE Recommended Practice No. 16R-90, Conducting Technical and Economic Evaluations in the Process and Utility Industries. Area Foundations Structural Steel Buildings Insulation Instruments Electrical Piping Painting Misc. Material Labor 0.06 1.33 0.05 0.50 0.03 1.00 0.02 1.50 0.07 0.75 0.06 0.40 0.40 0.50 0.005 3.00 0.04 0.80 Table 9-2 Distributive Estimating Factors The suggested material factors are applied to direct equipment costs, whereas the labor factors apply to the corresponding material item. Because the distributive factors are based on large scale field-built plants, an alternative factory fabrication adjustment can be made to reflect a modular construction approach requiring less field fabrication, as would likely be the case with smaller plant configurations. This approach is illustrated in reference (16). The approach discussed above does not preclude the use of alternate methodologies. One such alternate methodology, currently in the early stages of development, is based on the premise that fuel cell plant costs could be more accurately estimated using factors developed specifically for fuel cell applications, rather than factors based on conventional generating technologies. An overview of this approach along with a “first cut” at developing new fuel cell specific factors is presented in reference (18). Fuel cell-specific factors developed to date are based on limited data and should be considered highly preliminary. Continued refinement will be required as additional fuel cell plant costing information becomes available. 9-26PDF Image | Fuel Cell Handbook (Seventh Edition)
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