NOVELTY - A system for producing hydrogen gas fuel from water and/or waste water source comprises electrical photovoltaic collector (1), battery (2), pumping unit (3), hydrogen fuel electrolyzer (4), distribution pipeline (5), flash back retarder (6), stove/cooker (7) and generator to produce electricity (8), where the electrolyzer includes sewage level controller, anode terminal, cathode terminal, sewage level, safety valve, pressure gauge, temperature gauge, gas exit valve, sludge drain out valve and outlet valve. The system further includes wind turbine (9).    USE - As system to produce hydrogen gas fuel from water source and/or waste water source (claimed).    ADVANTAGE - The system produces hydrogen using higher technological efficiency and therefore reduces our dependability on fossil fuel, preserves the environmental quality and is able to push forward the green technology to greater height.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) electrolyzer for producing hydrogen gas fuel from water source and/or waste water source, comprising sewage level controller, anode terminal, cathode terminal, sewage level, safety valve, pressure gauge, temperature gauge, gas exit valve, sludge drain out valve and outlet valve; and    (2) producing hydrogen gas fuel from water source and/or waste water source involving generating electrical power by electrical power supplying unit or from a unit to supply electrical power, storing the electrical power in at least an electrical power storage unit, supplying electricity for pumping from water source and/or waste water source to a hydrogen fuel electrolyzer while level of the water source and/or waste water source within the electrolyzer and pump are controlled, and electrolyzing the water source in the presence of a catalyst solution such as potassium hydroxide, sodium hydroxide or ethanoic acid, having 2-6 vol./vol.% for a period of at least 0.03-60 hours to produce hydrogen gas fuel.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of System.    Electrical photovoltaic collector (1)    Battery (2)    Pumping unit (3)    Hydrogen fuel electrolyzer (4)    Distribution pipeline (5)    Flash back retarder (6)    Stove/cooker (7)    Electricity (8)    Wind turbine (9)