Biogas systems are technologies that convert organic waste into biogas, a renewable energy source. This process occurs in an anaerobic digester, where microorganisms break down the waste in the absence of oxygen. The resulting biogas primarily consists of methane and carbon dioxide, which can be used for heating, electricity generation, or as vehicle fuel. These systems can utilize various organic materials, including food scraps, animal manure, and agricultural residues. By capturing and using biogas, these systems help reduce greenhouse gas emissions and provide a sustainable way to manage waste, contributing to a circular economy.