[en] A new process for the simultaneous production of hydrogen and electrical power by using coal and high-temperature nuclear process heat is presented in this paper. In an electrolytic cell, sulphur dioxide dissolved in an aqueous solution of sulphuric acid is electrochemically oxidized to sulphuric acid at the anode while hydrogen gas is evolved at the cathode. The sulphuric acid produced in the cell provides the oxygen for the coal combustion which takes place subsequently at high pressure. The combustion gases expand in a turbine in order to produce electrical power. The components sulphur dioxide and water contained in this gases are separated and fed together with additive water into the electrolytic cell. A detailed mass, energy and exergy (availability) balance of the total process is presented for a 50 wt% sulphuric acid at the outlet of the electrolytic cell. The total efficiency of this process amounts to 56.9%. The process shows clear advantages compared with already proposed processes for electrical power and hydrogen production. (orig.)