How does a Photovoltaic (PV) system work?
The sun’s energy in the form of photons release electrons from their bonds in the silicon semiconductors that make up the solar cells. When such semiconductors are exposed to sunlight, they release small amounts of electricity. This process is known as the photoelectric effect. The photoelectric effect refers to the emission, or ejection, of electrons from the surface of a metal in response to light. It is the basic physical process in which a solar electric or photovoltaic (PV) cell converts sunlight to electricity. The flow of these electrons makes up the current that will ultimately be utilized in your home or building.