There's a lawsuit about the sale, but a judge in May ruled the sale can stay and/or move forward.

https://www.waaytv.com/content/news...Power-Plant-will-continue-510051681.html

I'd bet it's in appeal but couldn't find anything about an appeal. The story (and others) in the link above are the last things found via search.

If it hasn't officially sold, it's still a TVA facility.

If it's sold, it's private property but probably would fall under some kind of federal nuclear regulatory security laws.