The decision to phase all of them out has already been made, the next plant will be turned off in a couple of weeks.
Also, massive storage capacity is being installed already: 1 GWh of small-scale home storage was added in the first quarter of this year alone. When it comes to larger-scale batteries Germany is currently a bit behind, but that is just a matter of time since the business opportunity is just too great. So this is already happening right now in front of our eyes.
Base load is a concept of the past, flexible grids is the future, and that is exactly where the journey is already going.