Analysis of the efficiency of enterprises in the field of energy and sustainable development: European experienceSun Qiming, Irina Vlasova, Olga Mustafina, Andrey Rykov, Vera Kolchina and Svetlana MoiseenkoE3S Web Conf., 633 (2025) 04003DOI: https://doi.org/10.1051/e3sconf/202563304003