Generally speaking, when particles of light, called photons, meet the semiconductor material in a solar panel electricity is produced. This process is call Photo-Voltaics or PV. The resulting electricity can be used to charge batteries, power direct-current devices or be converted into the alternating current that powers our utility grid.
For our purposes, we will discuss the third purpose: creating electricity to reduce our monthly power bill. An array of solar panels can become a secondary source of power for a home or business. This is achieved through an arrangement with the local utility company called “Net-Metering”. When the array produces more power than is consumed, the meter runs backwards. The customer pays the difference between consumption and production.
A typical solar array feeds DC power to an inverter which feeds AC power to the circuit breaker panel. Briefly stated, when the sun shines the system works. Solar science does the work. A PV solar system requires little to no maintenance or interaction with the user.