In the daytime mode, municipal solid waste is loaded through the receiving hopper (1) into the fermentation chamber of the landfill reactor (2) without pre-sorting. Every 2-3 hours, the mixing of the loaded municipal solid waste in the landfill reactor takes place with the help of a manually operated mechanical mixer (3). Then, the laden municipal solid waste in the landfill reactor is heated by a solar air heater (4) from 20 to 55 °C. The hinged reflector is additionally installed parallel to the sides of the solar air heater at an angle of 450, which directs and concentrates the sun's rays on the surface of the solar air heater, and this also improves the energy efficiency of the solar air heater. In addition, through the active system of the solar air heater with hinged reflectors, the air heated from 20 to 65 0С through the air channel (6) heats the side and lower parts of the surface of the landfill reactor. The electric heater is a backup heater (7) and supports the creation of a stable temperature regime for the anaerobic fermentation of municipal solid waste in a landfill reactor on cloudy days and at night. The landfill reactor is covered on top with a polycarbonate translucent coating (8) and is additionally equipped with a reflector (9) located parallel to the landfill reactor, which reflects the sun's rays on the surface of the landfill reactor through a polycarbonate translucent coating to accelerate the efficiency of heat and mass transfer between the layers of municipal solid waste and allows to obtain additional solar thermal energy in a landfill reactor. Thus, direct and reflective sunlight passing through the translucent polycarbonate coating (8) flows into the installation and heats the absorber (10), and due to thermal conductivity, the heat is transferred to the internal volume of the landfill reactor and provides the required temperature regime of the installation. Within 12 days, the fermentation process and the release of high-quality landfill gas take place, and then the landfill gas is finally sucked off into the water filter (11) through the landfill reactor (2). Through the open valve (12), part of the high-quality landfill gas is sent to consumers through the pipeline (13) from the water filter (11). After 12 days, the fermentation process ends and the spent masses of municipal solid waste are removed from the landfill reactor through the exhaust pipe (14) to the exhaust bin (15), then the spent masses of municipal solid waste enter the storage partially as fertilizers or to the solid waste landfill.