Solar Panels Cleaning Frequency for Maximum Financial Profit

Allowing the dust to accumulate on solar panels without adequate cleaning leads to huge monetary losses. Proper judgment of when to call for washing of solar panels is a compromise between gross costs of cleaning the panels and how much reduction in efficiency of solar panels can be tolerated. In this paper, we derive a formula for the optimal number of days between cleaning cycles of a solar array by minimizing the cost of cleaning the array and the lost revenue from the unclean panels. The formula will aid in deciding cleaning periods based on the environment in which the solar panels are installed and cost incurred from undertaking the washing process.

[1]  A. Kimber,et al.  The Effect of Soiling on Large Grid-Connected Photovoltaic Systems in California and the Southwest Region of the United States , 2006, 2006 IEEE 4th World Conference on Photovoltaic Energy Conference.

[2]  B. Stridh.  Economical Benefit of Cleaning of Soiling and Snow Evaluated for PV Plants at Three Locations in Europe , 2012 .

[3]  Rodrigo Escobar,et al.  Effect of soiling and sunlight exposure on the performance ratio of photovoltaic technologies in Santiago, Chile , 2016 .

[4]  A. al-Ḥasan.  A new correlation for direct beam solar radiation received by photovoltaic panel with sand dust accumulated on its surface , 1998 .

[5]  Subrahmanyam Pulipaka,et al.  Characterization of power losses of a soiled PV panel in Shekhawati region of India , 2016 .

[6]  Jonathan Whale,et al.  Dust Effect and its Economic Analysis on PV Modules Deployed in a Temperate Climate Zone , 2016 .

[7]  Felipe A. Mejia,et al.  Soiling losses for solar photovoltaic systems in California , 2013 .

[8]  M. S. El-Shobokshy,et al.  Degradation of photovoltaic cell performance due to dust deposition on to its surface , 1993 .

[9]  W. Javed,et al.  Photovoltaic performance degradation due to soiling and characterization of the accumulated dust , 2016, 2016 IEEE International Conference on Power and Renewable Energy (ICPRE).

[10]  Maria Kapsali,et al.  Simulating the dust effect on the energy performance of photovoltaic generators based on experimenta , 2011 .

[11]  A. Mellit,et al.  The effect of soiling on energy production for large-scale photovoltaic plants , 2011 .

[12]  A. Hegazy.  Effect of dust accumulation on solar transmittance through glass covers of plate-type collectors , 2001 .

[13]  Rohit Pillai,et al.  Impact of dust on solar photovoltaic (PV) performance: Research status, challenges and recommendations , 2010 .