Model for economic optimization and economic assessment of energy saving Namitulina Anzhela Zahitovna, Gorlov Viktor Vladimirovich, Soklakova Irina Vladimirovna, Natocheeva Natalia Nikolaevna and Azhmuratova Madina Akhmambetovna E3S Web Conf., 243 (2021) 02009 Published online: 11 March 2021 DOI: 10.1051/e3sconf/202124302009