The following publication was developed by EPA to provide key information about the creation of renewable natural gas (RNG) from biogas including the main feedstocks and sources, options for delivering and using RNG, benefits of these projects, counts of operational and potential projects by feedstock type, processes and technologies used in upgrading biogas to RNG, policies and incentives for as well as barriers to RNG project development, and example projects.
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US EPA
United States Environmental Protection Agency