NOVELTY - A hypochlorite generator (102) generates sub production gas including hydrogen gas as main component, in electrolytic cell (106) including cathode electrolyte liquid, based on electrolytic process. A gas washer (86) removes impurity in sub production gas and passes to fuel cell (104). The impurity removed hydrogen gas undergoes electrochemical reaction with oxidizing agent (25) in fuel cell, to generate electric power.    USE - For generating electric power using fuel cell such as phosphoric acid type fuel cell, solid polymer fuel cell, using hydrogen gas supplied by hypochlorite generator used in kitchen for disinfectant treatment, water purification plant, hospital, dental clinic.    ADVANTAGE - Enables generating electric power efficiently and reliably, by using hypochlorite generator which uses portion of electric power output by fuel cell. Hence eliminates the need for external power supply.    DETAILED DESCRIPTION - An oxygen concentration regulator (114) provided between gas washer and fuel cell, adjusts oxygen concentration of sub production gas. The humidity controllers (120,122) arranged between the regulator and fuel cell, recovers heat exhausted from fuel and electrolytic cells, respectively while one of the controller is working and another controller is stopped. An electric power switching unit (111) selectively supplies electric power converted from natural energy such as wind or sunlight, or the electric power generated in fuel cell to hypochlorite generator. The hydrogen gas output by hypochlorite generator is stored in storage unit at night and is removed in specified time zone except night. The hydrogen gas is supplied to fuel cell after reacting with hydrogen occlusion alloy.    DESCRIPTION OF DRAWING(S) - The figure shows a block diagram of the electric power generation system. (Drawing includes non- English language text).    oxidizing agent (25)    gas washer (86)    hypochlorite generator (102)    fuel cell (104)    electrolytic cell (106)    electric power switching unit (111)    oxygen concentration regulator(120,122) humidity controllers (114)