How do solar photovoltaic (PV) systems work?
Solar electric systems capture the sun’s energy with photovoltaic (PV) cells that are connected together side by side in flat panels or modules mounted on a roof or open area facing toward the sun. Energy from sunlight striking the top layer of the PV cells, and causes the cells to release electrons. These electrons migrate through the electrical system and back to the cells again, causing a DC electric current in the system-the same type of current produced by a battery. A device called an inverter converts the current from DC to AC to match the kind of current running through a standard electric outlet in your building.
