Analysis of the composition of alternative energy sources in the regional energy systemAngela Yusupova, Baysangur Yusupov, Mayrbek Debiyev, Suliman Masaev, Timur Amkhaev and Anu MadaevaE3S Web Conf., 288 (2021) 01076DOI: https://doi.org/10.1051/e3sconf/202128801076