When sunlight hits a solar panel, solar energy from the sunlight is absorbed by the Photovoltaic (PV) solar cells in the panel. Each PV solar cell has a thin semiconductor wafer made from two layers of silicon. One layer is positively charged while the other has a negative charge, forming an electric field. When sunlight is absorbed by the PV solar cell, it energizes the cell and causes electrons to release from the atoms within the semiconductor wafer. The released electrons are set into motion by the electric field surrounding the wafer, and this motion creates an electrical current.