In this paper a review of solar energy using for hydrogen production is presented. The work reports on electrolysis
and its recent accomplishment and recommendations, photovoltaic research focus areas, photoelectrochemical
hydrogen production and photoelectrochemistry technology status. There is also presented a potential of solar
energy together with the maps, which show the yearly sum of horizontal global irradiation of solar energy sources
within Europe, Slovakia and Hungary. From the published works result that the cost of electricity from solar
technologies remains too high to achieve widespread deployment of solar-derived hydrogen. Photovoltaic
technology will be attractive as a potential source of electricity if the target price of electricity (5-7 ¢/kWh) for utility
applications is achieved.