Experimental Evaluation of the Effect of Inclination and Dust Deposition on Production Capacity of Photovoltaic Installations in West African Nations: Case Studyin Mali Drame

Document Type: Original Article


1 University of Science and Technology Beijing, 100083, China+School of Energy and Environmental Engineering, China, badiedjourtefast@outlook.com

2 National Center for Solar Energy and Renewable Energy, CNESOLER, Mali


The development of solar photovoltaic faces some difficulties in West African countries; such as: high cost of kW/h produced and long duration of return on investment. To that, there are some installation and operation aspects of Photovoltaic(PV) modules. In terms of installation, the incline plays a predominant role in the efficiency of a field photovoltaic. Indeed, the modules being fixed, it is, therefore, necessary to find the right incline so that they can capture the most solar energy every day. In terms of operation, PV modules need to be exposed to outside in order to operate under the most possibility of direct sunlight. Such equipment is therefore subjected to a natural climatic condition causing a great impact on its performance. This article deals with the influence of the operating parameters (optimal tilt and dust deposits) of PV modules in view of their improvement in West African countries such as Mali. After the choice of the cleaning by cloth and the different inclines of the modules were studied; the experiments were developed during the months of April-May-June, 2017. The results showed a reduction of PV modules from 4 to 14% of their efficiency was due to the accumulation of dirt on their capture surface. In addition, this study reveals an impressive result: a simple cleaning can save us energy about 140 FCFA/m2/month. Similarly, comparing with the outputs of the PV modules for different inclinations; it emerged that the optimal angle of inclination of the modules is slightly higher than the latitude of the study’ s place (about 15 °).


  1. M. Segmani, T. Lecoq, N. H. Dezfouli, A. Diawara, and L. E. Renouvelables, 2007, MALIDEAL Projet « Plateforme Solaire au Mali ».
  2. A. Gholami, I. Khazaee, S. Eslami, M. Zandi, and E. Akrami, 2018, “Experimental investigation of dust deposition e ff ects on photo-voltaic output performance,” Sol. Energy, vol. 159, no. November 2017, pp. 346–352.
  3. M. Abderrezek and M. Fathi, 2017, “Experimental study of the dust effect on photovoltaic panels ’ energy yield,” Sol. Energy, vol. 142, pp. 308–320.
  4. B. R. Paudyal and S. R. Shakya, 2016,  “Dust accumulation effects on efficiency of solar PV modules for off grid purpose : A case study of Kathmandu,” Sol. Energy, vol. 135, pp. 103–110.
  5. M. Mani and R. Pillai, 2010, “Impact of dust on solar photovoltaic ( PV ) performance : Research status , challenges and recommendations,” Renew. Sustain. Energy Rev., vol. 14, no. 9, pp. 3124–3131.
  6. A. Rao, R. Pillai, M. Mani, and P. Ramamurthy, 2014, “Influence of dust deposition on photovoltaic panel performance,” Energy Procedia, vol. 54, pp. 690–700.
  7. F. Mejia, J. Kleissl, and J. L. Bosch, 2014, “The effect of dust on solar photovoltaic systems,” Energy Procedia, vol. 49, pp. 2370–2376.
  8. L. Boyle, H. Flinchpaugh, and M. P. Hannigan, 2015, “Natural soiling of photovoltaic cover plates and the impact on transmission,” Renew. Energy, vol. 77, p. 237.e1-237.e8.
  9. A. A. Hegazy, 2001, “Effect of dust accumulation on solar transmittance through glass covers of plate-type collectors,” Renew. Energy, vol. 22, pp. 525–540.
  10. R. Nazar, 2015, “Improvement of Efficiency of Solar Panel Using Different Methods .,” Int. J. Electr. Electron. Eng., vol. 7, no. 1, pp. 12–17,
  11. P. K. Das, M. A. Habib, and M. Mynuddin, 2015, “Microcontroller Based Automatic Solar Tracking System with Mirror Booster,” Int. J. Sustain. Green Energy, vol. 4, no. 4, pp. 125–136.
  12. A. Gholami, A. Saboonchi, and A. A. Alemrajabi, 2017, “Experimental Study of Factors Affecting dust accumulation and their effects on the transmission coefficient of glass for solar applications,” Renew. Energy.
  13. M. J. Adinoyi and S. A. M. Said, 2013, “Effect of dust accumulation on the power outputs of solar photovoltaic modules,” Renew. Energy, vol. 60, pp. 633–636.
  14. D. Goossens and E. V. A. N. Kerschaever, 1999, “Aeolian Dust Deposition on photovoltaic Solar Cells: the Effects of Wind Velocity and Airborne Dust Concentration on Cell Performance,” Pergamon, vol. 66, no. 4, pp. 277–289.
  15. A. Al Shehri, B. Parrott, P. Carrasco, H. Al Saiari, and I. Taie, 2017, “Accelerated testbed for studying the wear , optical and electrical characteristics of dry cleaned PV solar panels,” Sol. Energy, vol. 146, pp. 8–19.
  16. Y. Jiang and L. Lu, 2016, “Experimentally Investigating the Effect of Temperature Differences in the Particle Deposition Process on Solar Photovoltaic ( PV ) Modules,” Sustainability.
  17. T. V Ramachandra, R. Jain, and G. Krishnadas, 2011, “Hotspots of solar potential in India,” Renew. Sustain. Energy Rev., vol. 15, no. 6, pp. 3178–3186.
  18. J. P. Bock, J. R. Robison, R. Sharma, J. Zhang, and M. K. Mazumder, 2008, “An Efficient Power Management Approach for Self-Cleaning Solar Panels with Integrated Electrodynamic Screens,” in Proc. ESA Annual Meeting on Electrostatics.
  19. R. Greenough, D. Jensen, and E. Voss, 2016, “Project SPACE : Solar Panel Automated Cleaning Environment,” Santa Clara University Scholar Commons.
  20. S. Patil and H. M. MALLARADHYA, 2016,  “Design and Implementation of Microcontroller Based,” Int. J. Eng. Res. Adv. Technol., vol. 2, no. 1.
  21. A. K. Mondal and K. Bansal, 2015, “A brief history and future aspects in automatic cleaning systems for solar photovoltaic panels,” Adv. Robot., no. May, pp. 37–41,
  22. R. G. Padaki, 2016, “Self-Cleaning Technology for solar PV Panel 1,” Int. J. Sci. Dev. Res., vol. 1, no. 9.
  23. “http://fr.wikipedia.org/wiki/Photocatalyse,” http://fr.wikipedia.org/wiki/Photocatalyse, 2017. .
  24. “Dépollution par photocatalyse _ un procédé d’avenir,” http://www.actu-environnement.com/ae/news/depollution_photocatalyse_6819.php4. .
  25. H. Kawamoto and T. Shibata, 2015, “Electrostatic cleaning system for removal of sand from solar panels,” J. Electrostat., vol. 73, pp. 65–70,
  26. A. Mishra and A. Sarathe, 2017, “Study of Solar Panel Cleaning System to Enhance the Performance of Solar,” J. Emerg. Technol. Innov. Res., vol. 4, no. 9, pp. 84–89,.
  27. “Rapid-cleaning robots set to cut solar energy losses, labor costs,” http://analysis.newenergyupdate.com/pv-insider/rapid-cleaning-robots-set-cut-solar-energy-losses-labor-costs, 2017.
  28. Y. A. Salam, T. Green, and Y. T. Lin, 2014, “Automated Self-Cleaning Solar Panel,”
  29. “Self-Cleaning System Boosts Efficiency of Solar Panels,” http://www.bu.edu/today/2014/self-cleaning-system-boosts-efficiency-of-solar-panels, 2014. .
  30. H. A. Kazem and M. T. Chaichan, 2016, “Experimental analysis of the effect of dust ’ s physical properties on photovoltaic modules in Northern Oman,” Sol. Energy, vol. 139, pp. 68–80,.
  31. M. T. Chaichan, B. A. Mohammed, and H. A. Kazem, 2015, “Effect of pollution and cleaning on photovoltaic performance based on experimental study,” Int. J. Sci. Eng. Res., vol. 6, no. 4,.
  32. “construction-australias-first-commercial-csp-plant-start-mid-2018,” http://analysis.newenergyupdate.com/, 2018.
  33. D. H. W. Li and T. N. T. Lam, 2007, “Determining the Optimum Tilt Angle and Orientation for Solar Energy Collection Based on Measured Solar Radiance Data,” Int. J. Photoenergy, vol. 2007.
  34. O. Asowata, J. Swart, C. Pienaar, and R. Schoeman, 1900, “` Optimum tilt and orientation angles for photovoltaic panels in the Vaal Triangle,” pp. 0–1.
  35. M. Koussa, M. Haddadi, D. Saheb, A. Malek, and S. Hadji, 2012, “Sun tracker systems effects on flat plate photovoltaic PV systems performance for different sky states : A case of an arid and hot climate .,” Energy Procedia, vol. 18, pp. 839–850.
  36. S. Abdallah, 2004, “The effect of using sun tracking systems on the voltage – current characteristics and power generation of flat plate photovoltaics,” Energy Convers. Manag., vol. 45, pp. 1671–1679.
  37. “Mali , Fiche pays, 2017, PopulationData,” https://www.populationdata.net/pays/mali/,. .
  38. G. de la B. 2015, africaine de Développement, “Les énergies renouvelables en Afrique : Profil pays du Mali,” Groupe la Banq. africaine développement,.
  39. R. Gaughan, 2017, “How Does Temperature Affect Solar Panels,” Sciencing,.