Economic, Energy, and Environmental Benefits of Concentrating Solar Power in California

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Economic, Energy, and Environmental Benefits of Concentrating Solar Power in California ( economic-energy-and-environmental-benefits-concentrating-sol )

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Economic Impacts of NREL CA Solar Benefits CSP in California The Excelergy-generated capital cost estimates are based on data from the SEGS plants, vendor inquiries, and various studies. NREL has developed “Learning Curves” to describe the reduction in capital and operating costs observed as more CSP plants are deployed. The learning curve cost reductions relate to technology advances, scale up, effects of mass production resulting from large scale deployment, and improvements in construction efficiency. Table 5-1 is a summary of capital costs for the four CSP plants. Black & Veatch worked from a more detailed cost breakdown to place equipment costs into “Manufactured in southern California” and “Not Manufactured in southern California” categories. Table 5-2 is a summary of annual O&M costs for the four CSP plants. Black & Veatch also estimated the direct and indirect economic impact of constructing and operating combined cycle and simple cycle combustion turbine plants. Because these plants provide intermediate and peaking electric services similar to those of a CSP plant, they offer a good benchmark to the economic impacts created by CSP. Table 5-3 provides the input assumptions for the combined cycle and simple cycle combustion turbine plants. Capital and operating cost breakdowns were also developed for both plant types based on Black & Veatch experience with each of these plant types to estimate the direct and indirect economic impact of constructing each plant in southern California. Table 5-4 provides a summary capital cost breakdown and Table 5-5 provides an O&M cost breakdown for the combined cycle and simple cycle combustion turbine power plants, respectively. Black & Veatch worked from a more detailed cost breakdown to place equipment costs into “Manufactured in southern California” and “Not Manufactured in southern California” categories. 5.2.1 Estimation of California-Supplied Goods and Services The RIMS II model calculates the economic impact of expenditures inside of a given region; therefore, the part of capital and operating costs spent in and out of southern California must be determined. Black & Veatch first divided the total capital and operating cost estimates into material and labor components. It has been assumed that all construction and operations labor jobs created are in southern California. The plant cost estimates were examined on a line by line basis and percentages were applied, based on engineering judgment and knowledge of suppliers, as to what portion of the equipment purchased for the plant would be manufactured in southern California. Some of the material and equipment is available from southern California manufacturers, while other specialized items are not. Table 5-6 shows the base case assumptions used regarding equipment purchases in California. Section 5.4 provides a sensitivity analysis with lower and higher in-state spending assumptions. April 21, 2006 5-4

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