NOVELTY - Hydrogen energy supply apparatus comprises a water electrolytic cell (1) sealed by a high pressure vessel (3), hydrogen (H2) gas storage apparatus (39) and H2 gas deriving system line. The apparatus also consists of opening-closing switch valves (45-1-45-n) provided to oxygen (O2) and H2 gas deriving system lines, and a supply switch valve for opening and closing H2 gas supply in the usage portion.    USE - For supplying H2 energy for home, gasoline station and building roof.    ADVANTAGE - The apparatus is efficient and safe in pressing H2 without using a gas compression machine which produces noise.    DETAILED DESCRIPTION - Hydrogen energy supply apparatus comprises i) a water electrolytic cell sealed by a high pressure vessel, ii) H2 gas storage apparatus and iii) H2 gas deriving system line through which H2 gas is led to apparatus (39). The apparatus also consists of valves (45-1-45-n) provided to the O2 and H2 gas deriving system lines, a supply switch valve which opens and closes H2 gas supply from apparatus (39) to a H2 gas usage portion. H2 generated in cell (1) is stored in apparatus (39), and sent out through the supply switch valve to the usage portion. Cell (1) performs water electrolysis in pure water or in an electric insulation liquid and generates H2 and O2 gas.    DESCRIPTION OF DRAWING(S) - The figure shows the diagram of H2 energy supply apparatus. (Drawing includes non-English language text).    Water electrolytic cell (1)    High pressure vessel (3)    Electric insulation liquid (5)    Hydrogen tank for vapor liquid separations (7)    Oxygen tank for vapor liquid separations (15)    Flexible pipe (18)    Water level detection units (19)    Hydrogen gas storage apparatus (39)    Hydrogen gas container (41-1-41-n)    Switch valve (45-1-45-n)    Hydrogen gas supply switch valve (49)    Oxygen gas deriving switch valve (55)    Oxygen gas storage apparatus (57)    Oxygen gas container (59-1-59-n)    Oxygen gas supply switch valve (67)    Equal pressure device (69)    Hydrogen gas chamber (71)    Oxygen gas chamber (73)    Partition material (75)    Displacement detection units (77)