Patent ID: 7112380

Claim:
Method of storage and redistribution of electrical energy comprising the steps of: producing hydrogen and oxygen through water electrolysis in an electrolyzer ( 1 ) operating under pressure; collecting the hydrogen and oxygen so obtained in respective pressurized tanks ( 3 , 5 ) said hydrogen and oxygen pressurized tanks ( 3 , 5 ) and said electrolyzer ( 1 ) all operating at substantially the same operating pressure; reconverting into water and electrical energy said hydrogen and said oxygen produced in said electrolyzer, through an electrochemical reaction of the latter in a fuel cell ( 9 ) fed from said tanks ( 3 , 5 ), and wherein said electrolyzer ( 1 ) and said fuel cell ( 9 ) use a single continuous liquid phase which is continuously circulated between the electrolyzer and the fuel cell and wherein the water produced in said fuel cell ( 9 ) by the hydrogen and oxygen reconversion step, is collected in the respective liquid phase and transferred together with the liquid phase to said electrolyzer ( 1 ) in order to undergo electrolysis.