Energy conservation challenges and potential in Russia’s North-East region A.S. Semenov, Yu.V. Bebikhov, S.N. Pavlova, I.A. Yakushev, O.V. Fedorov and O.V. Vladimirov E3S Web Conf., 220 (2020) 01014 Published online: 16 December 2020 DOI: 10.1051/e3sconf/202022001014