Glass with an active quantum coating is the first and only solution on a global scale which, thanks to the use of a coating of quantum dots on the glass, allows you to generate free electricity from the sun, while reducing harmful UV and IR radiation. Glass with an active quantum coating has very good light transmission parameters, while maintaining a high coefficient of thermal insulation. Glass with an active quantum coating reduces overheating of rooms, as well as the effect of the so-called urban heat island (UHI). Glass with an active quantum coating is a breakthrough in the energy balance of cities.