This comprehensive guide explores everything you need to know about photovoltaic solar panels, from the underlying science to practical installation considerations, helping you make informed decisions whether you're a homeowner, business owner, or industry professional. What is photovoltaic (PV) technology and how does it work? PV materials and devices convert sunlight into electrical energy. A single PV device is known as a cell. An individual PV cell is usually small, typically producing about 1 or 2 watts of power. We'll discuss the different types. Getting electricity from the sun in the way that best suits your needs requires knowledge of photovoltaic technologies and appropriate use of the elements of a system. They are made up of multiple solar cells—typically silicon-based semiconductors—that capture and transform solar energy through the photovoltaic effect.