The performance of PV solar panels depend on dust accumulated on them and tilt angle. For every location in the world there is an optimum tilt angle of dust free PV panels for best performance. However, in some areas of the world dust is an obstacle for PV panels operation. Examples of such areas are the middle east and the Arabian gulf countries. Accumulation rate of dust depends on the location as well as the tilt angle of the PV panel. In this project, the dependence of PV panels performance on dust accumulation in addition to tilt angle will be studied for a given location. Relevant data are collected and analyzed towards enhancing the efficiency of PV panels in the presence of dust.