In recent times, ensuring energy security for present and future generations has become a significant challenge, prompting the search for environmentally friendly and sustainable resources. Alongside other renewable energies such as solar and wind, hydrogen emerges as a pivotal player in the ongoing energy transition, addressing the seasonal fluctuations of the former. Nevertheless, due to its low volumetric energy density, hydrogen necessitates storage at high pressures or in large volumes. Repurposing or retrofitting depleted gas fields presents a viable solution, given their ample pore volumes, established reservoir structure, existing infrastructure, and favourable pressure and temperature conditions. However, storing natural gas and hydrogen differs due to their distinct hydrodynamical properties. Consequently, a comprehensive feasibility study is essential to verify the reservoirs' suitability concerning entrapment, caprock integrity, pressure-temperature conditions, microbial activities, in-situ stresses, and fault reactivations in the context of hydrogen storage operations as this can also compensate for seasonal fluctuations in the availability of renewable energies.