I fully agree that the grid must be expanded. I make that comment not as someone who lioves in the U.S.A but as someone who studies its energy systems as that is what I consult about for my everyday income. There is energy being wasted at times in the U.S.A simply because it is being produced in areas that were designed for supply as opposed to production, and therefor there is no spare grid capacity to take that energy back to the the consumers who need it.
But re-designing an electricity distribution system costs a lot of... a lot of money, and crosses state boundaries and that ends up resulting in red tape headaches, etc ...
It is much easier to get a wind farm constructed with all loans, planning consents, construction, transport, and all other logistical factors taken into account in one county or state, than it is to get a nationwide agreement on cross country distribution.
There are many demands on distribution, not juts making the electricity, but preserving the quality of that electricity as it crosses the country. But in the end the only way to get people to agree and get everything into action in a nationwide scale is for there to be a real emergency. But by that time it is too late and all the incentives to build the alternative or semi-alternative source points of power production
have since long gone.
P.S - It is only fair of me to note that this post is written on a Saturday night here in Japan after returning from an Izakaya (tavern) and having eaten a lot, but more to the point drunken 5 beers ... therefore feel free to dismiss much of this as drunken naivety.
But the electricity distribution problem is one that I have heard from clients over the last four years, so had a gut reaction in responding too.