>>16785140
>A neo-medieval era seems more likely than a golden age of solarpunk.
My thoughts too. I cope by just adding ~2000 years to whatever technology predictions are slated to happen beyond 100 years from now.

>Solarpunk
I don't see groundbased solar being used for a better-than-hydrocarbon grid. But I do see spaceborne solar doing it.

The same guy who did work on the "launch loop" space launch mechanism has some ideas on thin solid state satellites for computing power, and potentially power generation, for close term future.
It'll probably be explained somewhere on Keith Lofstrom's site http://server-sky.com/