How Solar Electric Systems Work
A photovoltaic (PV) system (or PV array) operates by using a semi-conductor material, typically comprised mainly of silicon- the earth's second most abundant element- to convert the energy of sunlight into electricity.
The basic components of a PV system:
PV Modules - Glass-covered, metal-framed modules containing a number of individual solar cells wired together in series to provide DC electricity.
Combiner Boxes - Groups of PV modules are wired together in series to increase the voltage in groups known as strings. Multiple strings are wired together in parallel in a combiner box, effectively combining the strings of an array to increase the current or amperage of the system.
Inverter - The electrical equipment that operates to convert DC electricity to AC electricity.
Generation Meter - AC Electricity Meter that is installed in the circuit between the array's inverter and the point of connection to the electrical distribution of the site or facility.