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How the anti-reflected solar glasses improve the efficiency of solar panels

Anti Reflective Coating: usage for solar panels

Anti Reflective Coating (AR Coating) is a technical method of reducing reflection and increasing light absorption in solar glasses, hence improving their effectiveness.

Anti-reflective coatings are now available not only on solar cells but also on the glass surface (superstate) of solar panels. Anti-reflective coatings on solar panels’' glass will improve light transmission, increasing the overall efficiency of the PV module. The glare from the glass will also be decreased, which is a plus. Some claim that this permits the panels to blend in better with their surroundings. It also permits the installation of panels near airports.

 (a panel without anti-reflective coating might blind a pilot..).


Anti-reflective coatings (ARCs) have firmly established themselves in PV manufacturing due to their demonstrated ability to boost energy yield. The vast majority of module manufacturers already use an ARC on the frontside glass of their products, and demand for ‘aftermarket' coatings to be added to modules that have already been deployed is growing.

However, in addition to letting more light get through the glass and onto the active cell, front glass coatings with the right characteristics can also help to decrease soiling, improving performance while lowering maintenance costs.


Coatings that combine both properties have recently been introduced to the market, but manufacturers still face challenges in keeping up with rapidly falling costs elsewhere in the PV module supply chain, as well as engineering coatings that can match the increasing lifetime guarantees that manufacturers must now offer. Coatings must provide high durability, including the ability to withstand harsh cleaning solutions, for 30 years or more in the field as the first line of defense between a module's inner workings and the ambient environment.