The electricity production of a photovoltaic system depends on many factors, such as the size of the system, the type of modules, the orientation towards the sky, and the solar irradiance. An average system can produce approximately 1,000 to 1,500 kWh per kWp annually.

A solar power system with a capacity of 10 kilowatt peak (kWp) delivers on average about 8,000 to 12,500 kilowatt-hours (kWh) per year.