Considering the amount of tech and self hosting types that live in cities, it seems like it would be popular to have little mesh intranets all over the place, but I’m not aware of any.
I read about NYC Mesh a while back, and I wonder if there are other similar things already in widespread use that I just haven’t heard about.
Power efficiency is extremely important for an off-grid network, because it translates more or less directly into battery and especially solar panel area requirements. You need the final node design to be hoistable up the tree.