Solar panels are actually semiconductors, which means they have properties of both insulators and conductors. When light shines on a photovoltaic (PV) cell – also called a solar cell – that light may be reflected, absorbed, or pass right through the cell. The PV cell is composed of semiconductor material; the “semi” means that it can conduct electricity better than an insulator but not as well as a good. Solar panels primarily consist of silicon, composite materials, and conductive metals, and the conductors that facilitate energy transfer are mainly made of copper and aluminum. Solar wires and cables are specialized electrical conductors designed specifically for photovoltaic (PV) systems. The PV cell is the basic building block of a PV system. Individual cells can vary from 0.
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