Oak Ridge National Laboratory (ORNL), in collaboration with the National Energy Technology Laboratory (NETL) and the Advanced Research Projects Agency–Energy (ARPA-E), is conducting an economics survey for the decarbonization of natural gas. Renewable natural gas (RNG) is a high-methane gas mixture derived from renewable biomass. RNG can be produced via a gasification or anaerobic digestion (“bio-gasification”) process, followed by the methanation of syngas (a synthetic natural gas [SNG] process]). When combined with carbon capture and storage (CCS), the overall process can achieve net-zero or even net-negative carbon emissions. The objective of this study is to determine the economics of such a scheme, the point at which the life cycle emissions of such a strategy become zero, and whether or not the costs of such a scheme can compete with traditional natural gas production processes.