Hydrogen storage power plant, and method for operating same

A hydrogen storage power plant, comprising:

• at least one of a pyrolysis device and a plasmalysis device, for producing hydrogen from methane or natural gas;
• a storage device for storing the hydrogen, coupled on an output side to the pyrolysis device or coupled on an output side to the plasmalysis device;
• a hydrogen combustion engine coupled on the output side to the storage with a closed noble gas cycle for noble gas circulation, which leads from an exhaust port of the hydrogen combustion engine via a circulation path to an inlet port of the hydrogen combustion engine and guides a noble gas from the exhaust port via the inlet port into a combustion chamber of the hydrogen combustion engine;
• and
• having at least one of
• a plasmalysis waste heat extraction point for extracting waste heat arising during methane plasmalysis and/or natural gas plasmalysis,
• a cooling circuit waste heat extraction point for extracting waste heat from a cooling circuit, which is generated during the combustion of hydrogen and transferred to a cooling circuit of the hydrogen combustion engine, and
• an exhaust gas waste heat extraction point for extracting waste heat generated during the combustion of hydrogen and transferred to an exhaust gas of the hydrogen combustion engine from the exhaust gas;
• wherein a switch is coupled to the plasmalysis waste heat extraction point, the exhaust gas waste heat extraction point and a thermodynamic cycle via a medium, and
• the switch is designed to couple the plasmalysis waste heat extraction point and the exhaust gas waste heat extraction point separately and together with the thermodynamic cycle via the medium.