NOVELTY - Producing methane, comprises: (a) providing a combustible fluid feedstock comprising methane produced from organic material; (b) introducing a first amount of combustible fluid feedstock comprising methane from the step (a) to an apparatus or pipeline for delivering methane to a fuel production facility; (c) arranging for a fuel production facility to use the combustible fluid feedstock comprising methane in a process for producing the fuel; and (d) generating or causing generation of a low carbon fuel standard (LCFS) credit.    USE - The process is useful for producing methane, which is useful for producing a fuel, a transportation or heating fuel and a liquid fuel, where the fuel is gasoline, diesel, heating oil or jet fuel, and the liquid fuel is a cellulosic biofuel (all claimed).    ADVANTAGE - The process is simple and utilizes the renewable biomass to replace or reduce the quantity of fossil derived energy present in transportation and heating fuels, hence economical, and provides methane that in turn provides the fuel that is renewable and eligible for generation of renewable identification numbers (RINs) or LCFS credits, while reducing the lifecycle greenhouse gas emissions compared to the conventional process of using natural gas to make non-renewable hydrogen and fuel.    DETAILED DESCRIPTION - Producing methane, comprises: (a) providing a combustible fluid feedstock comprising methane produced from organic material i.e. renewable biomass comprising at least cellulose; (b) introducing a first amount of combustible fluid feedstock comprising methane from the step (a) to an apparatus or a pipeline for delivering methane to a fuel production facility; (c) arranging for a fuel production facility to use the combustible fluid feedstock comprising methane in a process for producing the fuel, which process comprises (i) withdrawing for use at the fuel production facility a second amount of combustible fluid feedstock comprising methane from the apparatus, (ii) processing the second amount of combustible fluid feedstock comprising methane to produce renewable hydrogen, and (iii) producing the fuel having renewable content by a process comprising combining renewable hydrogen derived from the second amount of combustible fluid feedstock comprising methane with a crude oil derived liquid hydrocarbon in a reactor under conditions to hydrogenate the liquid hydrocarbon, where the lifecycle greenhouse gas emissions of the renewable content of the fuel is at least 20% lower than baseline emissions for gasoline; and (d) generating or causing generation of a low carbon fuel standard (LCFS) credit. An INDEPENDENT CLAIM is also included for producing a transportation or heating fuel, comprising (a1) obtaining at a fuel production facility a combustible fluid feedstock, where the combustible fluid feedstock comprises either renewable hydrogen or methane produced from organic material, which methane is processed to produce renewable hydrogen, (b1) producing the transportation or heating fuel having renewable content by a process comprising combining renewable hydrogen with a crude oil derived liquid hydrocarbon in a reactor under conditions to hydrogenate the liquid hydrocarbon, and the step (c) as above per se.