Integrating green hydrogen storage into mine water pumping stations in the context of energy transition

The aim of the study was to propose a framework for practical and fundamental model functional designs for the modernization of mine water pumping stations in light of the energy transition challenges in the economy. The proposed original database of functional models is intended to assist in the selection of an appropriate solution for specific conditions of modernisation of mine water pumping stations, regardless of their geographical location. The developed models were verified for specific technical conditions of an exemplary pumping station in the form of a case study. The results of the study indicated that energy transformation and decarbonization are most conducive to functional models of mine water pumping stations comprehensively solving the challenges of the enterprise and the problems of local communities. It was concluded that the most favorable form of long-term storage of surplus generated energy is the production of hydrogen in the process of water electrolysis. Models involving the sale of generated hydrogen are recommended for implementation, while models involving the on-site combustion of stored hydrogen are not economically viable.