There may be a potential for more localized grids that are interconnected by HVDC transmission lines. I'm not sure what the impetus for that would be, however.

There may be a potential for more localized grids that are interconnected by HVDC transmission lines. I'm not sure what the impetus for that would be, however. I agree that it would be unlikely. Interestingly, HVDC actually becomes a more efficient method of transmission over longer distances. Perhaps it's feasible to generate electricity half a continent away. Maybe tile the Sahara with solar panels and power all of Africa with it.