Annotation: A bioenergetic installation with a solar heating system for individual use designed for the processing and disposal of agricultural waste of organic origin with the production of biogas and liquid high-quality organic fertilizers under conditions of anaerobic fermentation was developed and built. Its structural scheme and the principle of operation of individual parts of this installation are presented. Particular attention has been paid to the use of solar and accumulated solar energy for heating the substrate in the reactor. The article presents the results of studies on the release of biogas from cattle manure and manure at various temperatures of anaerobic digestion. The data presented are the basis for choosing the optimal fermentation temperature in a small-scale biogas plant, as applied to small individual farms. The robot shows the main parameters of the proposed biogas plant. In view of the application of this technology in a small biogas plant, it is most rational in terms of the ratio of the cost of heat to energy and output biogas.