Hydrogen is a true all-rounder: the smallest element in our universe moves cars, buses, small and large commercial vehicles or even trains. This is why hydrogen filling stations differ: They are open to the public or located in the depot, they are integrated into existing filling stations or stand alone solutions. They store a few hundred kilograms or a few tons, under pressure or cryogenic, in horizontal bundles or high tanks or on exchangeable trailers. Anyone planning or wanting to operate a hydrogen filling station should know the options.