* As long as the generation and consumption both take place under the same government and the transmission infrastructure is safe from disruption.
So many plans about theoretical continental grids in Europe (with the extra mile of them being powered by solar in Africa) ignore the political reality that no government is going to give up significant chunks of the energy security of their country to something ouside their control.
Houston is a big city. Its metro population is about 7 million. And Houston has a lot of industry, probably the most industrial of the major Texas cities.
Texas is big, and depending on what part of West Texas you're talking about, Houston is pretty far away from it. For example, it's a 350 mile (~550km) drive between Abilene and Houston, and it's a 600 mile (~950km) drive between Amarillo and Houston.
After lots of wind generation got built in West Texas, they had to add more power lines to bring the power to the more populated part of the state. And they did, and it worked.