For some that don't know, Boone. T. Boone Pickens wanted to build wind farms that connected to the Eastern grid. The panhandle part of Texas is on the Eastern grid. He could not build them as he wanted someone else to build the transmission lines, as he could not justify the cost. The few transmission lines that are there were of a capacity to serve the local load, and not much else.
For those that don't know, The wizard of OZ was written by a woman that had lived in Liberal Kansas, which is in the dust bowl area that includes the South West part of Kansas, and the panhandles of both Oklahoma, and Texas. Lots of wind, not much rain, and not many people.
Texas does have a few DC to DC ties, but not enough. And that part of the Eastern Grid doesn't have a lot of extra capacity. As I have heard.