Solarpower projects
Very interesting projects, hardware has reached the potential to be run on solar energy :) Infinite energy, infinite connection.
https://solar.lowtechmagazine.com/
http://solarprotocol.net/index.html
Bicycle generators
Well, there is also the possibility of using a bicycle generator in dire times
https://hackaday.com/2013/10/30/bicycle-generator-for-emergency-electricity/
Meshnets somewhat alternatives to regular ISPs
This is awesome
There is also the meshnet project, but I'm not quite sure which folks are behind it.