NOVELTY - The system has an impermeable heat exchanger (211) thermally communicated with a chamber (203) for organic feedstock (201). An electric discharge module (230) is coupled between the chamber and the heat exchanger, where feed gas for the discharge module is derived from products of slow pyrolysis of the feedstock. The discharge module generates a wall stabilized arc (233) and an inductively coupled plasma. A diverging nozzle is coupled between an annular electrode of the discharge module and the heat exchanger, where the electrode is shaped with a converging-diverging profile.    USE - System for producing fuel gas from solid or liquid organic feedstock of a gasification system for industrial or agricultural applications.    ADVANTAGE - The system facilitates efficient conversion of organic material to the fuel gas by use of high-pressure electric arc in which the feed gas comprises tar gases generated by slow pyrolysis such that the arc enables extremely fast pyrolysis to occur without introduction of unwanted feed gas components, thus yielding a high fraction of hydrogen and low fraction of carbon monoxide. The system facilitates careful control of admission of the feedstock through air-tight rotary valves or a helical feeder such that sufficient pressure is built up in a feedstock chamber to drive gases through the entire process. The arc adds thermal energy that can be converted to directed energy by constraining the flow to increase speed so as to control residence time of an arc effluent in the heat exchanger, thus mitigating formation of undesirable tri-atomic and larger species. The system allows the arc, another arc, the chamber and another chamber to be configured in a looped cascade arrangement in which each arc takes feed from the former chamber and delivers heat output to the latter chamber so as to shorten path lengths between each arc and each chamber, thus distributing the arcs throughout the feedstock to uniformly and directly draw the feed gas and transfer the heat energy, and hence enhancing thermal efficiency of the system.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a fuel gas production system with an input feedstock, rotary valves, a feedstock chamber, a high pressure arc module, a heat exchanger and a char byproduct.    Organic feedstock (201)    Chamber (203)    Impermeable heat exchanger (211)    Electric discharge module (230)    Wall stabilized arc (233)