alt Hacker NewsNorway and Sweden have tones of renewable energy, but relatively little intermittent energy. If the economics of H2 ever work, it'll only ever work in a grid that's driven by intermittent energy sources (wind and solar).
A hydro-driven grid does not need storage. Hell, if you have enough hydro, it can even be your storage. Not all of Europe has the geography to be able to cover their needs with just hydro.
H2 economics work if you have constant oversupply. If your electrolyzer works only 50% of the time and storing is expensive, transporting is expensive and roundtrip efficiency is abysmal, it'll still cost a ton. Higher chances to use just cheaper gas generation because even LNG is cheaper than H2 saga.