“Israel has developed probably the world’s most advanced desalination process, one that can be powered with electricity generated by solar cells”
Isreal’s desal plants are run on electricity generated by adjacent power plants fired by natural gas from Israel’s offshore Leviathan natural gas field ...
Yes, that’s their domestic plants - but Israeli industry has developed literal standalone desal plants that you set up by the ocean and can power with solar arrays. They aren’t as good, but if you have no infrastructure and no capability to maintain a natural gas plant, a gigantic big box structure you set up by the ocean that makes fresh water is a huge change.