When light hits a cell many of it is absorbed into the cellular phone. This light is energy! The sunlight or energy breaks electrons loose and also they become a pre-existing of electricity which flows through the connected cells and generates power. The facility is then run for you to some battery or alternatively a home electrical system. If more power is generated through a property then is used, the capability is sent into the particular grid. Once it heats up occurs you can possibly be paid out for the power you receive.