Abstract: A window assembly. The window assembly is exposed to radiant light, and comprises a window pane, a solar module positioned adjacent the window pane. The solar module includes a) a photovoltaic layer to receive at least a portion of the radiant light, and to convert the radiant light into electrical energy, and b) an insulating substrate having a predefined openness and being positioned proximate the photovoltaic layer, to block out another portion of the radiant light based on the openness. The window assembly also comprises an energy device being in electrical communication with the photovoltaic layer to receive and distribute the electrical energy.