<———————— Former TVA subcontractor(along with Dominion Energy, Duke Energy, KU/LGE)
TVA only had one coal fired plant in KY, Paradise. The rest of the KY coal fired plants are mostly, if not all, KU/LGE plants. KU did close the Green River plant, but there are several others around KY that are coal fired.
Bull Run is slated to close late next year. Other than it, there are 4 other coal fired plants in TN. TVA has talked about converting some to natural gas, but the conversion is not easy or cheap. Bull Run had the most finicky boiler in the whole system. It is a single boiler and constantly goes down. Restarts are not easy there, closing it down is no big surprise. The other coal fired plants can up production and can help make up shortfalls. Closing any others will be awhile IMHO, at least until TN enacts more stringent laws regarding them much like NC has done.
As far as “green energy” that’s pretty much solar or wind. Hydro is green so to speak but is very limited and tied to the weather as the other two with the exception hydro has to be concerned about flood protection and navigation minimums for the TN river system. Green energy is expensive and for that matter is really not cost effective. Sure, it’s a “feel good” substitute but there are way too many variables to make it a much more consistent and viable power source.
The rest of power production via TVA is nuclear. There’s 3 units at Browns Ferry, 2 at Sequoya, and now 2 at Watts Bar with the second unit coming online just a few years ago. I find it hard to believe any new nuclear units will be considered unless these new smaller experimental reactors pan out and even then that’s a small maybe.