That hydrogen can be used as fuel is not controversial. Of course it can. What I mean is that nobody is actually using hydrogen as part of a renewable life-cycle (i.e. generating hydrogen from excess renewable energy, and using as energy store).

>Ah yes, the old "nothing can ever happen for the first time" argument. Mindless reactionary nonsense.

The problem for you is that renewables have been around for years so the fact that they aren't powering any economy needs an explanation. Furthermore, even conceptually, you haven't explained HOW they would power an economy. Renewables have well known limitations. They are diffuse power sources, require huge surface areas covered with high-tech collectors, and are highly variable. The only way we can get them to work is by attaching them to a grid with natural gas or coal - because we have no way to store excess energy enough to bridge their variability. You can deny this, but it is an actual fact and the fact that you cannot point me to a region that has solved this should be quite telling.