If a tracking systems is adopted the net energy yield of the plant improves in the range of 25%-30% on annual basis. The cost of a typical tracking systems is in the range of about 7-10 USD per Wp and the gain in energy yield can return the incremental project cost only in two years period. A solar plant with a tracking system raises to full power after a few hours of sunshine and remains thereon a clearly sunny day. A fixed array maintains the peak power output only for a few hours of the day.
Energy yield results of a typical PV systems with and without tracking system