Revises the definition of “biomethane” to include methane produced from an organic waste feedstock that meets specified conditions for injection into a common carrier pipeline and is either methane produced from the anaerobic decomposition of organic material, including co-digestion, or methane produced from the non-combustion thermal conversion of certain materials, when separated from other waste. Promotes the in-state production and use of biomethane and biogas, which helps California meet its climate and clean energy policies.