The selection of a method for the generation of hydrogen is contingent upon several criteria, including the availability of feedstock, the cost, the scalability, and environmental issues. The development and implementation of these technologies are necessary for a hydrogen economy that is sustainable and to accomplish goals of decarbonization that are more comprehensive. The procedures of producing hydrogen are now undergoing study and innovation with the objective of enhancing their efficiency, cost-effectiveness, and impact on the environment. The technologies that are used to produce hydrogen involve a variety of approaches to the generation of hydrogen from a variety of feedstocks. Several key technologies for the creation of hydrogen include Steam Methane Reforming, Water Electrolysis, Biomass or Coal Gasification, Methanol Reforming, Pyrolysis of Plastic Waste, Photoelectrochemical (PEC) and Photobiological Processes, and Thermochemical Water Splitting.