Renewable Natural Gas (RNG) is pipeline-quality biomethane produced by upgrading biogas from landfills, wastewater treatment, agricultural digesters, and organic waste facilities, providing carbon-neutral or carbon-negative fuel directly substituting for fossil natural gas. RNG production involves biogas collection, pre-treatment removing moisture and particulates, upgrading concentrating methane through CO₂ removal, and compression for pipeline injection or vehicle fuel. RNG enables waste-to-energy conversion while reducing greenhouse gas emissions.

RNG market growth is driven by renewable fuel standards, carbon pricing policies, natural gas utility sustainability goals, and corporate emission reduction commitments. Projects require biogas upgrading equipment including separation vessels, compressors, metering systems, and interconnection facilities. Fabrication opportunities span upgrading system components, skid packages, and complete facilities. RNG combines environmental benefits with economic opportunity through renewable fuel credit generation, creating growing markets for equipment suppliers with biogas upgrading expertise and understanding of RNG regulatory and commercial frameworks.