Good catch. The west Texas windfarms are 4 GW+. That’s likely an error when they called it 4 MW.
Further clarification here:
https://freerepublic.com/focus/f-news/3934509/posts?page=178#178
....from a FReeper in the energy industry, stating that at the time of the post (#178), 27,000 MW of 31,000 MW installed wind capacity was down (frozen up). THAT is (was) serious.