Co-digestion processes, which involve combining multiple types of organic materials, play a crucial role in the efficient generation of biogas. The description of RNG has been developed by the EPA’s voluntary programs, emphasizing the need for specific standards and guidelines in its processing. Various components, such as flow meters and gas chromatographs, are critical in measuring and analyzing RNG, ensuring compliance and optimizing performance. Anaerobic digesters play a vital role in stabilizing and optimizing methane production from various feedstocks, capturing methane emissions, and converting them into RNG for energy generation or as a transportation fuel.