The rational use of energy in buildings is achieved starting with the design stage of them. The use of energy-efficient and energy-saving technologies in the project in many ways reduces the energy consumption of buildings and save money on heating costs. One of the possible solutions to the energy-saving of buildings and structures is the application of green roof technology. Taking into account the thermal, economic, ecological, social, constructive advantages of the green roof technology with a competent economic approach it is possible to recoup the erection of the roof. The purpose of the research of the master's thesis is to develop of methods of reducing the payback period for green roofs during the reconstruction of buildings using the example of budgetary and private institutions. Despite the large number of publications on this subject the problem of the recoupment of green roofs remains relevant for further study.