NOVELTY - The electric energy generating device (1) has a shaft (2) that is rotatably mounted at energy generation units (3a,3b) for generating electrical energy, and is driven by a drive unit. The lever arms (4a,4b) are driven by lever arm drive units (5a,5b). The sides of the lever arms are provided opposite to the sides of the rotatable shaft and with the sides of the lever arm drive units. The lever arms are provided in the form of rotors having rotor blades. The rotors and electric energy generation units are alternately arranged along the shaft.    USE - Device for generating electric energy converted into electric power produced from e.g. abandoned nuclear power plant (claimed). Can also be used in coal or gas-fired power plant, wind power plant, solar or photovoltaic power plant and hydroelectric power plant, etc.    ADVANTAGE - The improved, energy-efficient and flexible process for the production and storage of generated electric energy can be ensured. The cost-effective process for generating electric energy can be provided. The rotatably mounted shaft is oriented parallel to gravity. Hence voltage and bending moment of rotatable shaft can be reduced. Hence maintenance interval and maintenance cost can be reduced. Tolerated load distribution of lever arms is ensured, so that the frictional resistance is reduced and the overall efficiency of the electric energy generating device can be increased. The assembling and disassembling processes of the electric energy generating device can be performed easily, so that the manufacturing cost of the device can be reduced.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a use of cooling tower of abandoned nuclear power plant as truncated casing; and    (2) a method for storing electric energy.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of the device for generating electric energy.    Electric energy generating device (1)    Shaft (2)    Energy generation units (3a,3b)    Lever arms (4a,4b)    Lever arm drive units (5a,5b)