“Dutch company Rads Global Business has developed an anti-soiling coating for solar PV modules that are at least two years old. The new product is claimed to increase power yield by up to 7% and to have a payback time of 2.5 to four years depending on the dust level of the site.
Netherlands-based Rads Global Business BV has developed an anti-soiling and anti-reflective nanocoating for solar glass intended for application in existing PV systems.
Called HP+, the coating is claimed to increase power yield by between 4 and 7% compared to non-coated modules, over a period of up to five years. “Its cost is estimated at around €1.60 per module and application costs [are] approximately €0.10,” a spokesperson from the company told pv magazine. “But application costs may vary depending on local labor market conditions.”
The coating is currently being produced at different facilities in Germany, Belgium and the Netherlands. The coating process involves four nanomaterials. Three compounds called NanoClean, Vetra clean, and Vtranova are used for preparing the glass surface for the deposition of a fourth material, which is called HydroPlus and creates a 120nm thick coating layer on the glass surface. This final element plays a key role in giving the panel anti-soiling, anti-abrasion, self-cleaning, and anti-reflection properties.
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Bellini, Emiliano. PV Magazine 28 February 2022.