NOVELTY - The integrated electrolysis and gasification process comprises introducing water (201) into an electrolysis cell (210) and operating the electrolysis cell with an external source of electricity to produce oxygen (202) and hydrogen, introducing a hydrocarbon feedstock into a membrane wall gasification reactor (230) with an external source of steam and optionally an ash-forming material, subjecting the hydrocarbon feedstock to partial oxidation to produce a hot raw synthesis gas, and passing the hot raw synthesis gas to a steam generating heat exchanger to produce steam.    USE - The integrated electrolysis and gasification process is useful for production of hydrogen gas (claimed).    ADVANTAGE - The integrated electrolysis and gasification process allows production of the hydrogen gas with high purity and less power consumption.    DETAILED DESCRIPTION - The integrated electrolysis and gasification process comprises introducing water (201) into an electrolysis cell (210) and operating the electrolysis cell with an external source of electricity to produce oxygen (202) and hydrogen, introducing a hydrocarbon feedstock into a membrane wall gasification reactor (230) with an external source of steam and optionally an ash-forming material, subjecting the hydrocarbon feedstock to partial oxidation to produce a hot raw synthesis gas, passing the hot raw synthesis gas to a steam generating heat exchanger to produce steam and a cooled raw synthesis gas, introducing the steam from the heat exchanger into a turbine (220) to produce electricity, operating the electrolysis cell with the electricity, and recovering the hydrogen gas from the electrolysis cell, where oxygen is produced by the electrolysis cell and optionally supplemental oxygen produced by an air separation unit. The process further comprising subjecting the cooled raw synthesis gas to a water-gas shift reaction with a predetermined amount of steam, and recovering a shifted synthesis gas. The electrolysis cell is operated with the external source of electricity to increase the oxygen output from the electrolysis cell. The process is integrated with a hydrotreater and a hydrocracker and with a crude oil upgrading process that includes an atmospheric distillation unit (ADU) from which bottoms are introduced into a vacuum distillation unit (VDU) from which the bottoms are recovered and introduced as the hydrocarbon feedstock to the membrane wall gasification. The crude oil upgrading process includes a coking unit. In the crude oil upgrading process, a residue from the VDU is recovered and introduced as the feedstock to the coking unit, a petcoke product from the coking unit is recovered and introduced as the hydrocarbon feedstock to the membrane wall gasification reactor and the hydrogen recovered from the electrolysis cell is introduced into the hydrotreater and hydrocracker. The crude oil upgrading process includes a solvent deasphalting process in which the residue from the VDU is recovered and introduced as the feedstock to the solvent deasphalting process, asphalt containing bottoms from the solvent deasphalting process are recovered at introduced as the hydrocarbon feedstock to the membrane wall gasification reactor and hydrogen recovered from the electrolysis cell is introduced into the hydrotreater and hydrocracker. A total ash content of the feed to the membrane wall gasification reactor is 2-10 W%. The ash content is maintained by the addition of a separate feed of ash forming material. The ash-forming material is mixed with a liquid hydrocarbon feedstock upstream of the membrane wall gasification reactor. The membrane wall gasification reactor is operated at a mole ratio of oxygen-to-carbon content of the feedstock of 0.1:1-10:1. The electrolysis cell is operated at a temperature of 70-90 degrees C and at a voltage of 1-5 V. The water-gas shift reaction is operated at a pressure of 1-60 bars and at a mole ratio of water-to-carbon monoxide of 5:1-3:1.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a process for production hydrogen gas.    Water (201)    Oxygen (202)    Electrolysis cell (210)    Turbine (220)    Gasification reactor. (230)