Photovoltaic (PV) devices generate electricity directly from sunlight via a process that naturally occurs in some materials. Within a certain class of crystals, electrons are freed when tiny packets of light from the sun — called photons — are absorbed. These electrons can be induced to travel through a circuit as electricity.
Solar cells are made from semiconductors such as silicon. They are designed with a positive and a negative layer to create an electric field similar to that of a battery. Configuring many cells in a circuit is the basis for a solar PV panel.
Solar PV systems are groupings or “Arrays” of modules wired together and to other electrical devices, to produce, isolate, convert and distribute electrical power.Solar PV systems can be part of a total approach to reduce greenhouse gas emissions, protect our environment and reduce our dependence on foreign oil.
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