Actually, Texas has made quite a big thing out of not connecting their grid to anyone else's. Because They're Real Men Who Go It Alone. Of course, that means w

Actually, Texas has made quite a big thing out of not connecting their grid to anyone else's. Because They're Real Men Who Go It Alone. Of course, that means when there is a natural disaster in Texas (with the existing, largely-fossil-fuel-powered grid!), they...can't really get help from anyone else. (My hazy understanding is that there are a few limited-duty linkages that can be activated, or something, but it's woefully inadequate to serve the whole state.) IIRC, the last time this happened, the only parts of Texas that were still getting power were a few that had wind & solar plants going. Because those were still operating just fine.