Photovoltaic cells, better known as solar panels, are plates made of extremely sensitive semiconductors – which are special silicone based compounds – that are able to absorb electrons transmitted from sunlight rays. The energy rattles the electrons loose, allowing them to flow freely, and then be absorbed to flow in a specific direction and create electric current that later on can be used to power equipment. Photovoltaic arrays, or arrays of solar panels, generate a powerful form of renewable electricity.