One of the biggest problems of modern humanity is the insatiable need for energy. Looking to the future, energy conversion processes must be sustainable. Hydrogen is considered the fuel of the future, and electrolysis of water is one of the ways to obtain extremely pure hydrogen. However, the best catalysts belong to the group of platinum metals, and in practice, cheaper metals, such as nickel, are used, which are less effective. Therefore, water electrolysis is a relatively expensive process. RatioCAT attempts to contribute to the solution of this problem by developing extremely active non-platinum hydrogen production catalysts that can be combined with solar cells, making hydrogen production sustainable and economically viable.