A setup like this seems perfect for a little shed to code in that has solar power.

I've wanted to build something like Roald Dahl's writing shed: https://youtu.be/AsxTR09_iWE?t=294 for a while.

I live in a climate with cold winters though, so I hate to invest in something like this and not be able to use it for a significant part of the year. I guess I could put a small pellet or wood stove in it..

If you don't need/can't use the grid backup you could probably get away with a cheap-ish Ecoflow/anker/etc battery with some solar plugged in and save a few hundred bucks