Wall Shading Losses of Photovoltaic Systems

Joseph Appelbaum (), Assaf Peled and Avi Aronescu
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Joseph Appelbaum: School of Electrical Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
Assaf Peled: School of Electrical Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
Avi Aronescu: School of Electrical Engineering, Tel Aviv University, Tel Aviv 6997801, Israel

Energies, 2024, vol. 17, issue 20, 1-16

Abstract: The deployment of photovoltaic (PV) systems on rooftops in urban environments may encounter shading on the PV collectors from surrounding walls, acting adversely on the generated electricity of the PV systems. Most studies on the shading of PV systems do not deal analytically with the shading losses of PV collectors affected by walls, fences, and obscuring objects. The present article mathematically formulates shadow expressions for wall and inter-row shading on PV collectors and calculates the percentage of annual shading losses affected by wall heights and azimuth angles, the distances of walls to collectors, and the length and azimuth angles of collectors. This study indicates that the shading losses increase for shorter distances from the collector to the walls and for higher walls. Shading losses may reach 7 percent for wall heights of 4 m and at a distance of 2 m from the collectors to a wall. The results indicate that wall shading dominates inter-row shading.

Keywords: PV systems; wall shading; inter-row shading; collector azimuth; inter-row spacing (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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