Understanding the Effects of Microbial Soiling on Solar Photovoltaic Performance Ahmed Sadki, Mohamed Bousla, Abderrahman Mouradi, Abderrahman El Kharrim, Ali Haddi, Youness El Mourabit and Zakaria Moutakki EPJ Web Conf., 326 (2025) 02006 Published online: 21 May 2025 DOI: 10.1051/epjconf/202532602006