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This research displays the performance analysis of a 5kWp CIGS PV Solar system fixed at al Mansour company, Iraq-Baghdad (latitude 33.3°N, longitude 44.4°E and 41m above the sea level) and the  comparison with PVsyst simulation program to find out the possibility of CIGS system under Baghdad climate. The system was observed during all year of 2017. The Average daily Array, reference and Final yields of the system were 5kWh/kWp (h/day), 6.1kWh/kWp and 4.85kWh/kWp, respectively. The yearly energy yield was 1781.8kWh/kWp. the Annual Energy produced from this system is 8820.2kWh and the annual global horizontal solar irradiation (GHI) received in Baghdad is 1986.4kWh/m 2 . The yearly average of system and array losses were 0.18kWh/kWp and 1.1kWh/kWp, the yearly average of array, system and inverter efficiencies were 12.7%, 12.1% and 96.47%, respectively. The capacity factor and performance ratio were 20.4% and 80.2%, respectively. These values indicate very good performance for CIGS PV solar system fixed in Baghdad city of Iraq. the comparison between PVsyst and CIGS will tack place in conclusion and discussion.
Abed et al. (Tue,) studied this question.