https://www.youtube.com/watch?v=nQzH_j1-FjE

None of that is going to happen. Renewables will take over because the profit motive is the most powerful force in our modern world.

And you are wrong about battery plants. Look up the Moss Landing plant in California. They replaced 5 of 7 natural gas units with two battery farms (one in the turbine hall, and the other in what was the parking lot). The two most efficient NG units were kept as backup/peaker units.