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Assessment of Parabolic Trough and Power Tower Solar Technology Cost and Performance Forecasts

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Assessment of Parabolic Trough and Power Tower Solar Technology Cost and Performance Forecasts ( assessment-parabolic-trough-and-power-tower-solar-technology )

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Figure D-1 — Major Cost Categories for Parabolic Trough Plant 2004 Near-Term Case: 100 MWe, 12 hrs TES, 2.5 Solar Multiple 2% 58% Figure D-2 — Solar Field Component Cost Breakdown for Parabolic Trough Plant 2004 Near-Term Case: 100 MWe, 12 hrs TES, 2.5 Solar Multiple 4%4% 3% 3% 7% 5% 6% 14% 3% 23% D-2 SL-5641 Final Receiver (HCE) (20%) Mirror (19%) Metal support structure (29%) Drive (6%) Interconnection Piping (5%) Electronics & control (7%) Header piping (3%) Pylon Foundations (4%) Other Civil Works (4%) Heat Transfer Fluid (3%) 29% 20% 19% The evaluation of cost reductions for a parabolic trough plant focuses on the solar field, power block, and thermal storage since these three areas account for approximately 90% of the total direct costs (based on 12 hours of thermal storage). As pointed out previously and illustrated in Figure D-2, the support structures are 29%, the HCE 19%, and the mirrors 18% of the solar field direct costs; 68% of the total solar field direct cost. As such, the following main items were focused on for evaluation of cost reductions: • Net annual solar-to-electric efficiency • Solar field  Support structure Structures and Improvements (2%) Solar Collection System (58%) Thermal Storage System (23%) Steam Gen or HX System (3%) Power Block (EPGS, BOP) (14%)

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