How does energy harnessed from biogas?

Energy harnessed from biogas is produced through the anaerobic digestion of organic materials, such as agricultural waste, food scraps, and sewage. During this process, microorganisms break down the organic matter in an oxygen-free environment, generating biogas primarily composed of methane and carbon dioxide. This biogas can then be utilized as a fuel for heating, electricity generation, or even as a vehicle fuel after purification. Additionally, the byproduct of this process, known as digestate, can be used as a nutrient-rich fertilizer.