I'm one of those off grid people, but I'm not looking for 100% off grid. What I want is the equivalent of an UPS, but for everything. If the municipal power g

I'm one of those off grid people, but I'm not looking for 100% off grid. What I want is the equivalent of an UPS, but for everything. If the municipal power grid, water and sewage go down. I want to be able to live mostly like before. If there's a disruption in the logistics chain for the grocery store for any reason, I can live with what I have and can grow for a week or two in relative comfort, a month would suck. If the wired internet connection goes down, I want to have a wireless option that automatically takes over.