by 
Solar panels develops a thick coating of dust and dirt from atmospheric fallout, and contaminated solar panels require expensive regular cleaning to maintain peak performance and high energy output. Dirt and pollution blocks sun light from reaching the panel and reduces its electrical power production by up to 20%. Anti-Soiling technology uses nano-technology that combines both sunlight and moisture to destroy dust and dirt build up before they settle on your solar panel.
Reference: https://www.soleeva.com/anti-soiling-solar-panels/
Proven technology
Module glass treated with Anti-Soiling coating soils less quickly and is easier to clean. By reducing the soiling rate the modules can maintain their optimal performance for longer, while reducing the number of cleaning cycles, labor and consumables needed to clean solar installations.
Anti-Soiling coating has the same anti-reflective properties as industry-leading Anti-Reflective (AR) coating which is proven to deliver a power gain of 3% versus uncoated glass (in flash tests).
Putting solar coatings to the test
Extensive testing conducted with leading suppliers of automated cleaning equipment has proven that modules with AS-coated glass remained stable after more than 1,000 cleaning cycles – which equals roughly 20 years of bi-weekly cleaning.
