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Reflective lighting of Photovoltaic (PV) systems on shaded building facades
https://doi.org/10.15518/isjaee.2025.09.043-056
Abstract
This study investigates a mirror-based reflectivity approach to mitigate shadow-induced power loss in building-integrated photovoltaics (BIPV). Experimental and simulation-based analyses reveal a near-linear relationship between shading area and efficiency loss: a 25% shaded area leads to over 20% reduction in PV performance. An optimal mirror-to-PV area ratio (20-30%) enhances daily irradiance by 46,5-161.3%. While BIPV systems on lower floors (1-6) suffer significant energy losses in winter, those above the 8th floor remain unaffected by shading. The findings provide an effective shading compensation strategy for BIPV deployment in high-density, high-latitude urban environments.
About the Authors
Lisong Qin
Ural Federal University named after the first President of Russia B. N. Yeltsin
Russian Federation
Russian Federation
Qin Lisong, graduate student
Yekaterinburg, Mira st., 19, 382445630@qq.com
S. E. Shcheklein
Ural Federal University named after the first President of Russia B. N. Yeltsin
Russian Federation
Russian Federation
Shcheklein Sergey Evgenievich, Head of the Department of Nuclear Power Plants and Renewable Energy Sources. Doctor of technical science, professor, Doctor of Technical Sciences
Yekaterinburg, Mira st., 19
Yu. E. Nemikhin
Ural Federal University named after the first President of Russia B. N. Yeltsin
Russian Federation
Russian Federation
Nemikhin Yurii Evgenievich, Senior Lecturer
Yekaterinburg, Mira st., 19
Xiaoyu Chen
Ural Federal University named after the first President of Russia B. N. Yeltsin
Russian Federation
Russian Federation
Chen Xiaoyu, graduate student
Yekaterinburg, Mira st., 19
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Review
For citations:
Qin L., Shcheklein S.E., Nemikhin Yu.E., Chen X. Reflective lighting of Photovoltaic (PV) systems on shaded building facades. Alternative Energy and Ecology (ISJAEE). 2025;(9):43-56. (In Russ.) https://doi.org/10.15518/isjaee.2025.09.043-056
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