NOVELTY - Production of electric power and generation of discharge fluid involves providing a discharge system comprising reducer, neutral oxidant and discharge component, transferring acidic protons from the reducer at negative electrode of the electrolyte-electrode assembly to the neutral oxidant fluid at positive electrode of the assembly through electrolyte and transferring electrons from negative to the positive electrode. The discharge component contains an electrolytic cell stack comprising several electrolytic cells, containing electrolyte-electrode assembly.    USE - Production of electric power and generation of discharge fluid used in electrochemical flow battery or fuel cell of automotive and stationary applications.    ADVANTAGE - The method enables high utilization of the oxidant with uniform current density. The method is energy-efficient and uses electrode made of carbonaceous materials which are economical.    DETAILED DESCRIPTION - Production of electric power from aqueous multi-electron oxidant and reducer, and generation of discharge fluid involves providing a discharge system comprising form(s) of reducer fluid, neutral oxidant fluid, and discharge component, generating discharge fluid in the component by transferring acidic protons from the reducer at negative electrode of the electrolyte-electrode assembly to the neutral oxidant fluid at a positive electrode of the assembly through an electrolyte of the assembly and transferring electrons from the negative electrode to the positive electrode of the assembly through an external electric circuit connected to terminals of the discharge component. The neutral oxidant fluid and the reducer are present in different form(s). The discharge component contains an electrolytic cell stack comprising several electrolytic cells containing electrolyte-electrode assembly. The discharge fluid is generated by consumption of the neutral oxidant fluid and the reducer fluid. INDEPENDENT CLAIMS are included for the following:    (1) discharge system;    (2) apparatus; and    (3) production of electric power and regeneration of aqueous multi-electron oxidant and reducer in energy storage cycle.    DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart explaining the production of electric power from an oxidant fluid comprising one or more forms of an aqueous multi-electron oxidant and a reducer fluid comprising one or more forms of a reducer and generation of discharge fluid.