Reducing CPV Materials Cost Through Multistage Concentration
2019
In PV manufacturing, process costs fall rapidly with scale, but a slower decrease in material costs limits cost reduction. Analysis of a proposed multi-stage-concentration module shows that even with additional concentration stages for low tandem-cell cost, initial concentration by a trough mirror can greatly reduce overall materials usage compared to Fresnel/box CPV. A compact sealed module at the trough’s focus allows high-performance materials for efficiency and durability, and estimated costs (¢/W, LCOE, capital-to-scale) compare favorably to even silicon PV.
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