Volodymyr Voloshchuk, Head of the ATEP Department, visited Ukrinterm LLC. Together with this enterprise the project on development of low-temperature Smart-system of heat supply of buildings on the basis of the condensing modular boiler room is planned. Scientific and technical development involves the creation of low-temperature (with direct water temperature up to 50oC) heating system of the building on the basis of condensing modular boiler room by developing and implementing mathematical and computer models of such a system, applying criteria to justify its parameters and operating methods, also based on the introduction of the concept of “digital twin”.