That's because there's not much load in that area. America's best wind power belt is north from the Texas panhandle up to Canada.[1] But there are no big cities in that region.
The US thus needs more long DC power lines. The technology is already in use in China. The Zhundong-Sichuan power line goes 2600km. It's a DC line at 1.1 megavolts carrying 10 gigawatts. That technology could easily carry power from the wind belt to the rest of the US.
The US thus needs more long DC power lines. The technology is already in use in China. The Zhundong-Sichuan power line goes 2600km. It's a DC line at 1.1 megavolts carrying 10 gigawatts. That technology could easily carry power from the wind belt to the rest of the US.
[1] http://www.nrel.gov/gis/images/80m_wind/USwind300dpe4-11.jpg