Ever heard of a "substation"? How about a distribution bus"? All sub grids. It's why power will go out in just one area or "sub" and not the entire grid.Soooo a macro-grid with a bunch of micro-grids? How would that work, if the macro goes down everyone fires up their micro?
That is the purpose of the regional NG peak plants popping up. Adding power to subgrids as needed. Managing localized demand has been made easier with the smart grid.It would be the best way to take advantage of the private solar and wind grid tie projects and less chance of zone wide power outage. also cheap NG power generators could be set up to supplement these district grids