Yes, mirrors can increase the output of a solar panel. It is said that using mirrors considerably improves the available sunlight absorbed by the panels, perhaps resulting in a 20 to 30% increase in output production. However, researchers continuously seek innovative means to improve its. When it comes to mirrors used in solar energy systems, there are three main types: parabolic mirrors, flat mirrors, and heliostats. Glass is used to protect solar cells, but it must be transparent to the wavelengths of solar light the cells absorb.