NOVELTY - Fuel provision system comprises: a hydrogen container (1) for storage and refill of hydrogen; oxygen container (2) for storage and refill of oxygen; first pressure adjustment device; second pressure adjustment device; combustion engine connected to first pressure adjustment device; generator; battery; fuel cell (9) connected to second pressure adjustment device; a water tank; an electrolytic tank (6) connected to the water tank, battery and fuel cell; an exchange membrane connected to the electrolytic tank and the water tank; a first pressurizing device; and a second pressurizing device.    USE - The fuel provision system is useful in hybrid electric vehicles, furnaces, industrial cutting/welding devices, and electrothermal devices.    ADVANTAGE - The fuel provision system: utilizes a fuel cell which is versatile, clean, low-noised, reliable, easy to maintain, and has improved fuel conversion efficiency; and recycles the by-products from various power units to produce hydrogen and oxygen for further power and electricity generation in a non-stop cyclic process, and thus it is a viable tool for environment protection.    DETAILED DESCRIPTION - Fuel provision system comprises: a hydrogen container (1) for the storage and refill of hydrogen; an oxygen container (2) for the storage and refill of oxygen; a first pressure adjustment device connected to the hydrogen and oxygen containers for adjusting the pressure and flow of output hydrogen and oxygen from the hydrogen and oxygen containers; a second pressure adjustment device connected to the hydrogen and oxygen containers for adjusting the pressure and flow of output hydrogen and oxygen from the hydrogen and oxygen containers; a combustion engine connected to the first pressure adjustment device to receive hydrogen and oxygen, where the combustion engine is powered by igniting received hydrogen and oxygen; a generator connected to and driven by the combustion engine to produce electricity; a battery connected to the generator for the storage of electricity produced by the generator; a fuel cell (9) connected to the second pressure adjustment device to receive hydrogen and oxygen, and to produce electricity by chemical reaction; a water tank (5) connected to the combustion engine and the fuel cell for the storage of water produced by the combustion engine and the fuel cell; an electrolytic tank (6) connected to the water tank, battery, and fuel cell, where the electrolytic tank electrolyzes water from the water tank by electricity from the battery or the fuel cell into hydrogen and oxygen; an exchange membrane connected to the electrolytic tank and the water tank, where the exchange membrane purifies and separates hydrogen and oxygen from the electrolytic tank, and recycles water back to the water tank; a first pressurizing device connected to the exchange membrane and the oxygen container so that separated oxygen is pressurized and stored in the oxygen container; and a second pressurizing device connected to the exchange membrane and the hydrogen container so that separated hydrogen is pressurized and stored in the hydrogen container. INDEPENDENT CLAIMS are also included for a fuel provision system, comprising either: the hydrogen container, the oxygen container, the first pressure adjustment device, the second pressure adjustment device, a fuel tank connected to the first pressure adjustment device to receive hydrogen and oxygen, one of a furnace and an industrial cutting/welding device connected to the fuel tank and using the fuel tank's stored hydrogen and oxygen as fuel, the fuel cell, a water tank connected to the fuel cell for the storage of water produced by the fuel cell, an electrolytic tank connected to the water tank and the fuel cell, the exchange membrane, the first pressurizing device, and the second pressurizing device; or the hydrogen container, the oxygen container, a pressure adjustment device connected to the hydrogen and oxygen containers for adjusting the pressure and flow of output hydrogen and oxygen from the hydrogen and oxygen containers, a fuel cell connected to the pressure adjustment device to receive hydrogen and oxygen, and to produce electricity by chemical reaction, an electrothermal device connected to the fuel cell and using electricity produced by the fuel cell as fuel, a water tank connected to the fuel cell for the storage of water produced by the fuel cell, an electrolytic tank connected to the water tank and fuel cell, the exchange membrane, the first pressurizing device and the second pressurizing device.    DESCRIPTION OF DRAWING(S) - The figure illustrates a schematic representation of a fuel provision system.    Hydrogen container (1)    Oxygen container (2)    Water tank (5)    Electrolyte tank (6)    Fuel cell (9)