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A Levelized Cost Metric for EDS-Based Cleaning of Mirrors in CSP Power Plants

[+] Author Affiliations
Nitin Joglekar, Emre Guzelsu, Malay Mazumder

Boston University, Boston, MA

Adam Botts

Abengoa Solar LLC, Lakewood, CO

Clifford Ho

Sandia National Laboratories, Albuquerque, NM

Paper No. ES2014-6496, pp. V001T02A026; 7 pages
  • ASME 2014 8th International Conference on Energy Sustainability collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology
  • Volume 1: Combined Energy Cycles, CHP, CCHP, and Smart Grids; Concentrating Solar Power, Solar Thermochemistry and Thermal Energy Storage; Geothermal, Ocean, and Emerging Energy Technologies; Hydrogen Energy Technologies; Low/Zero Emission Power Plants and Carbon Sequestration; Photovoltaics; Wind Energy Systems and Technologies
  • Boston, Massachusetts, USA, June 30–July 2, 2014
  • Conference Sponsors: Advanced Energy Systems Division
  • ISBN: 978-0-7918-4586-8
  • Copyright © 2014 by ASME


Integration of electro-dynamic screens (EDS) on mirrors in CSP power plants is an emergent and environmentally conservative technology. It can remove the deposited dust from these mirrors and thus maintain high reflectivity continuously through the plant life. We propose a levelized cost of mirror cleaning (LCOMC) metric to link the EDS-enhanced reflectivity gains with the relevant product and installation costs, as well as with the direct and indirect costs associated with plant operation and maintenance. The LCOMC metric accounts for the fact that enhanced reflectivity owing to EDS technology allows the plant operators to specify a suitably smaller optical capacity plant in order to deliver a fixed power production target. We illustrate our proposal with a dataset on deluge cleaning of a scaled solar power plant configuration. For the configuration studied, it is shown that, if the EDS technology production and installation cost is $10/m2, then its LCOMC is 7.9% below the LCOMC for a comparable deluge cleaning alternative. Thus, the proposed LCOMC metric provides a methodology for systemic assessment of the economic impact of the EDS technology (and other mirror cleaning technologies), early in its technology development cycle.

Copyright © 2014 by ASME



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