So for a country on the upswing, they need to throw some serious money at infrastructure:
Energy experts say blackout like India's is unlikely in U.S.
And the experts saying this couldn't happen to the US are full of ****. Our infrastructure is also aging, as witnessed in 2003:
Major power outage hits New York, other large cities - CNN
Yes, there are 3 grids. My guess is that the Texas grid, which is the newest and most self sustainable, wouldn't implode like the other 2 could.