Amid the growing demand for sustainable and environmentally friendly energy sources, biogas plants represent a promising solution for processing organic waste. This work examines the potential for biogas production under mesophilic temperature conditions and the creation of new renewable energy sources through anaerobic fermentation. The manure treatment process not only enables the production of methane as a valuable energy resource, it also yields biofertilizers that can be used in agriculture. As a result, the use of biogas helps reduce greenhouse gas emissions and improve soil quality, making it an important element in the transition to sustainable farming practices and environmental protection. Experimental studies were carried out on a biogas plant developed at the Department of Machinery and Equipment in Agribusiness of Kazan State Agrarian University, resulting in the production of combustible biogas. The purpose of this study is to conduct a comparative analysis of the theoretical and experimental biogas yields and to assess the quality of the resulting products. The research followed a standard methodology at mesophilic fermentation temperatures ranging from 25 to 35 °C.
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