NOVELTY - The procedure for the production of electricity, heat and hydrogen and/or methanol, comprises coupling an oxyfuel-steam power plant with a modular high temperature reactor (MHTR) power plant in such a way that the oxygen emerging in the MHTR power plant part in an electrolysis process is introduced in steam boiler plant (3) of the oxyfuel-steam power plant and the heat emerging in the MHTR power plant is brought in a heating boiler plant (8) of the oxyfuel-steam power plant. The oxygen is produced under avoiding the development of carbon dioxide in the MHTR power plant.    USE - Procedure for the production of electricity, heat and hydrogen and/or methanol.    ADVANTAGE - The procedure ensures simple, easy and efficient production of electricity, heat and hydrogen and/or methanol in environmental-friendly manner.    DETAILED DESCRIPTION - The procedure for the production of electricity, heat and hydrogen and/or methanol, comprises coupling an oxyfuel-steam power plant with a modular high temperature reactor (MHTR) power plant in such a way that the oxygen emerging in the MHTR power plant part in an electrolysis process is introduced in steam boiler plant (3) of the oxyfuel-steam power plant and the heat emerging in the MHTR power plant is brought in a heating boiler plant (8) of the oxyfuel-steam power plant. The oxygen is produced under avoiding the development of carbon dioxide in the MHTR power plant over high-pressure water electrolysis and/or high-temperature steam electrolysis and is mixed with gas stream, which is required in the oxyfuel-steam power plant for the combustion fuel or biogenic fuels. The steam of the heating boiler of the MHTR power plant is coupled in medium pressure section of main turbine of the oxyfuel-steam power plant. The heating boiler is conveyed in floating-pressure operation during standard operation of the plant. The pressure regulation of the steam turbine is carried out through water injection into the steam of the heating boiler.    DESCRIPTION OF DRAWING(S) - The figure shows a modular high temperature reactor power plant (Drawing includes non-English language text).    Steam boiler plant (3)    Steam turbine installation (5)    Modular high temperature reactor (6)    Gas turbine (7)    Heating boiler plant. (8)