Swift Coat, an Arizona State University spinout company specializing in nanocoatings, was selected to receive a $1 million award from the U.S. Department of Energy Solar Energy Technologies Office (SETO) to advance innovations in solar manufacturing.
A patterned film of nanoparticles used to attract water droplets and keep surfaces clean made using Aerosol Impact-Driven Assembly, Swift Coat’s proprietary nanoparticle coating technology. Photo by Jessica Hochreiter, Arizona State University.
The project aims to reduce efficiency losses in solar panels due to soiling, the buildup of dirt on the panel’s surface that blocks sunlight.
“Everyone has seen how dirty their windows can get after a dust storm, but few realize the same happens to their solar panels,” says Peter Firth, Swift Coat chief executive officer. “This buildup of dirt can reduce the power output of panels by up to 30% and, if you aren’t the type to climb up on your roof and clean them, this loss of efficiency can persist for months.”
Swift Coat’s solution to this problem is a thin coating composed of nanoparticles.
“The special nanoparticles in our coating perform a chemical reaction powered by ultraviolet sunlight that actively breaks down dirt, keeping the panel clean and operating at optimal efficiency,” says Dr. Shannon Poges, Ph.D., Swift Coat’s senior engineer.
Partners on the award include a large, US-based glass manufacturer and the National Renewable Energy Laboratory, a premier solar research institution in the U.S.
“Soiling can be just as big a problem for utility- scale solar installations as it is for homeowners,” says Zachary Holman, Ph.D., Swift Coat chief technology officer and associate professor at Arizona State University. “These partnerships will help us to rapidly deploy the technology across the country, putting money back into your pockets in the form of a reduced electricity bill, whether you own panels or not.”