A Costly and Unnecessary New Electricity Grid

Great article in MIT's Technology Review on why a new national grid is unnecessary and perhaps futile. The solution local and regional transmission lines. Why not use the renewable sources that are inherent to each area of the country to offset our fossil fuel use? Roughly we could use hydropower in the northwest and northeast, solar in the southwest and southeast, and wind in the midwest and offshore. Distribute those renewable power types locally instead of halfway across the country and use smart grid technology to use the renewable energy more efficiently. Sound good?