[nudgeOrnurture]

one state supplying the rest is not what you want, especially if there are chances that something will disturb that states grid.

I remember the uni day discussions about Africa supplying the rest of the world with solar energy and that the material requirements for such an infrastructure should become a thing around 2025 - 2035 ... then someone explained climate change and hinted at the exponential function ...

back to topic: you'd have to maintain an "inert" backup, which isn't portfolio-communist-economically "viable". or you share the load "as much as necessary", which would still become an issue if any of the suppliers have a fallout ...

[hvb2]

That was a real plan

https://en.m.wikipedia.org/wiki/Desertec

[nudgeOrnurture]

one of the projects listed is probably somewhere in my bookmarks.

and AFAIK it still is a real plan but, officially, we are not where we wanted to be material science-wise ... heat, distances and batteries are still somewhat an issue, meaning, not efficient and cheap enough to be a no-brainer (despite already being a no-brainer but, you know, wolfs of the wall street bangers are super cool and smart and who wouldn't be partisan with leBuffets et al???)