The issue I have with a lot of these studies is they dont take into account that new tech is always expensive at first, once we master and distribute hydrogen fuels and solar tech becomes affordable, these studies will be proven wrong.

Hydrogen in its current state isn't great, Evs currently produce tons of acid waste in production but we have tech like GaN batteries emerging and new ones will too as we bother to invest in them.

Just recently I read about solar panel glass panes which would be unobtrusive and easy to maintain as just one example. We can't put down an idea just because we can't do it today, humans are capable of amazing things, we've proven this countless times.