EERE's New Projects

Advanced Manufacture of Reflectors

Awardee Details

University of Arizona


DOE Amount 

The University of Arizona and its partners are developing technology to improve the optical accuracy and reflectivity of the self-supporting glass mirrors used in CSP collector systems.

The research team is working to optimize and validate a novel glass-molding technique that creates very precise mirrors in a variety of shapes. The focus is on developing a novel hot-glass molding process that could be used for high-speed production at low cost, which could also be easily integrated into a production line. In parallel, the research team is developing a novel way to boost second-surface silver reflectivity and inhibit soiling.

If successful, this major advance in the method for shaping float glass could reduce the time needed for the shaping step by a factor of 100—down to 200 seconds. In this way, the process would be compatible with mass production at high speed and low cost.


  • Develop and prove new methods for rapidly shaping glass mirrors and coating them for higher reflectivity and soil resistance
  • Allow for production of mirrors with point-focus as well as the cylindrical shape (line-focus) now widely manufactured for trough CSP
  • Improve mirror optical accuracy to increase power per square meter
  • Reduce the cost of the solar trough mirrors made in the future in very high volume by about 40 percent