Abstract: The present invention refers to a system (100) for distributing and storing electric energy, comprising: - a first input terminal (103) connectable to a fixed electric network (105) for withdrawing electric energy from the latter; a second input terminal (106) connected or connectable to an electric energy source (107) alternative to the fixed electric network, particularly a renewable energy source, for withdrawing electric energy from the latter; an output terminal (102) for delivering electric energy to one or more users (101); a first input/output terminal (100) connected or connectable to a first storage system (8) for storing electric energy in the latter and for withdrawing stored electric energy from the same; a second input/output terminal (112) connected or connectable to a second storage system (9) for storing electric energy in the latter, and withdrawing stored electric energy from the same, the second storage system (9) being of a type different from the first storage system (8); a control modul

Abstract: An apparatus is described for producing gaseous hydrogen, including: a container provided with an input for water; an acoustic-wave generator suitable for inducing sonolysis in the water introduced in the container; an electromagnetic radiation source configured to induce photolysis in the water introduced in the container; a device adapted to induce electrolysis and arranged subsequent to the acoustic-wave generator and at the source of the electromagnetic radiation.