Systems and methods for local generation and/or consumption of hydrogen gas

A pyrolysis reactor system for generating hydrogen gas for local distribution, consumption, and/or storage, the pyrolysis reactor system comprising:

• an autothermal pyrolysis reactor having a heating region, wherein a reactant is directed through the heating region, wherein the heating region is in thermal communication with a combustion component, and wherein the reactant includes a hydrocarbon;
• a combustion component thermally coupleable to a supply of a combustion fuel and configured to combust, in the combustion component, the combustion fuel to indirectly heat the reactant in the heating region of the autothermal pyrolysis reactor above a reaction temperature, wherein, at the reaction temperature, at least a portion of the hydrocarbon in the reactant converts into an output that includes hydrogen gas and carbon particulates;
• and
• a carbon separation component configured to separate at least a portion of the carbon particulates from the hydrogen gas in the output.