NOVELTY - The apparatus for storing electrical energy, comprises material A an alkali metal and material S sulfur, and two outer containers containing containers BA and BS joined by a solid electrolyte E. The materials A and S are contained separately from one another in a respective container BA and BS. The containers are arranged one above the other. The containers BA and BS are joined by the solid electrolyte E, which is permeable to cations. The containers BA and BS are contained in an outer container. The containers BA and BS are arranged one above the other as pair of barrels.    USE - The apparatus is useful for storing electrical energy by materials A and S.    ADVANTAGE - The apparatus is capable of effectively and economically storing electrical energy by materials A and S with high stability and less consumption of energy in an efficient manner.    DETAILED DESCRIPTION - The apparatus for storing electrical energy by materials A and S that form a redox couple, comprises the materials A and S, and two outer containers containing containers BA and BS joined by a solid electrolyte E. The materials A and S are contained separately from one another in a respective container BA and BS. The containers are arranged one above the other. The containers BA and BS are joined by the solid electrolyte E, which is permeable to cations. The containers BA and BS are contained in an outer container. The containers BA and BS are arranged one above the other as pair of barrels. The materials form a redox couple. The alkali metal such as sodium is present as melt, and ceramic tubes are held in an inner side formed from the electrolyte E. Rooms over standpipe communicate with the overlying common alkali metal such as sodium reservoir. The electrolyte E consists of a ceramic or cation-conducting glass. Two barrels are adjusted in a transport container, where an electrical pole is connected in series connection. A steel plate barrel (3) is a lower inner barrel, and comprises an interior trim made of an aluminum magnesium alloy. An INDEPENDENT CLAIM is included for a method for storing and for transporting electrical energy below use of an electrochemical reactor.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of an upper steel plate barrel.    Lower barrel (1)    Steel plate barrel (3)    Overbarrel (10)    Negative side (14)    Positive side. (18)