Impact of Soiling Rate on Solar Photovoltaic Panel in Malaysia Shaharin A. Sulaiman, M. Rosman M. Razif, Tan Dei Han, Samson M. Atnaw and S. Norazilah A. Tamili MATEC Web Conf., 225 (2018) 04008 Published online: 05 November 2018 DOI: 10.1051/matecconf/201822504008