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Created page with "== Introduction == Biomethane, also known as renewable natural gas (RNG), is a biogas that has been upgraded to a quality similar to fossil natural gas. By upgrading the quality to that of natural gas, it becomes possible to distribute the gas to customers via the existing gas grid, within existing appliances. Biomethane is a sustainable energy source, and its production and use have a low environmental impact. == Production == Image:Detail-51753.jpg|thumb|..."