Environmental benefits of modern power system and clean energy Vedaste Ndayishimiye, Xu Zhang, Deborah Nibagwire, Patrobers Simiyu, Giovanni Dushimimana and Sefu Bikorimana E3S Web Conf., 107 (2019) 02006 Published online: 05 July 2019 DOI: 10.1051/e3sconf/201910702006