The thesis begins with an extensive and in-depth review of the state of the art on electrolyzers and hydrogen storage methods, with the aim of identifying the most suitable configuration for the development of a digital twin of a Power-to-X plant. The digital twin is designed using object-oriented programming in order to ensure computational efficiency and flexibility for future modifications. The plant model includes a daily performance analysis of a system composed of photovoltaic panels, an electrolyzer, and a metal hydride storage unit, as well as a long-term study that extends to the system’s lifetime. This lifetime assessment also comprises an economic analysis and the evaluation of selected environmental impact parameters.