**7. Conclusion**

In the present chapter, for the first time, a comprehensive model was proposed for the PV module. This model has a very high strength in prediction of the electrical characteristics of the dusty PV module. The developed model was verified under different operating conditions of the PV module and then was used to predict the electrical performances of the dusty PV module in the region of Agadir, Morocco. The results show that this model can reasonably predict the module performances under different weather conditions. However, this study is still open as some other factors like humidity, wind speed, particle material, and PV module type need further investigation in the near future in order to approach a complete modeling. This study is highly useful in dusty regions and can help the PV designer to predict the power of the PV module with a reasonable accuracy.
