Get a Fracino gas heated lever machine. I did all the research already and that machine will allow you to operate anywhere. A few batteries/solar for your grinder or led lights etc. The best machine is the Astoria Rapollo followed by the Fracino.

There is some really good info on the Francino website with a visual and explanation on how to set up. Here is the link and then scroll to the bottom of the page.

https://www.fracino.com/dualfuel.html

I saw this in Klaipedia, Lithuania. Now I regret not taking more detailed pictures. I recall that there were no electrical cords but there was a propane tank in the car and I assume that it was heating the water.