Crescent Dunes Solar Thermal Facility

July 23, 2017 - Tonapah, NV- Workers use a mechanized washing truck to clean over 10,000 tracking heliostats at the Crescent Dunes Solar Thermal Facility, owned by SolarReserve. The facility, built with US sourced steel, glass and technology, provides more than 500,000 megawatt hours of electricity per year, using molten salt technology to provide electricity day or night. (Photo by DENNIS SCHROEDER / NREL)