Good and necessary question! Certainly, hydrogen will never be able to compete with the way natural gas is stored in nature, dumbly waiting for human technology to access it. However, the supply of water is not in doubt, so neither is the supply of hydrogen derived from water. And the tanks and pipelines needed to store hydrogen are already in existence, at a small scale – there is no doubt that the necessary expansion of these facilities could be implemented, as could other methods of storage.