This paper presents investigation of the performance and efficiency characteristic of the five-parameter model of photovoltaic module at desert environment. Experimental data under outdoor conditions can be given by the realistic mono-crystalline PV-panel operations in desert climate in the region of Adrar (0.18 W, 27.82 N), Algeria, and was studied. The available technical data over a period of three consecutive days include solar radiation, ambient temperature, open circuit voltage, short circuit current, maximum power point voltage, maximum power point current and the actual electrical output power. Finally, we compared and analyzed the modeled results and the actual experimental measurements. A good agreement between the simulated results and the field data are found.