Biogas is a renewable. And contributes 5% to Germanys energy load, at baseload capability, still being made more and more flexible. You may not like it but it is definitely there. Hydro by the way also destroys vast stretches of land and creates rivers that are poor in aquatic life. Nuclear plants also heat up local water ways. In Heidelberg, we had the local river Neckar freeze for the first time in 40 years after the nuclear plant upstream shut down.

At this point, nobody that is serious is talking about 100% renewables. As is 100% nuclear which has similar problems of being inflexible. However, not all of this has to be battery storage, having a power full, europe-wide grid is equally important. Without that already now when they are still allowed, nuclear plants have shut down at times voluntarily because there was no demand. Phasing out nuclear may not have been the smartest of all moves, but its still far from the top ten of most stupid moves done in the german energy strategy. And especially not in the top ten of the most stupid moves of the conservative party.

It's a common canard to say that batteries are the only storage technology that could be used.

Long term storage is better handled with hydrogen. Using batteries and hydrogen at plausible (or even conservative) costs, one can get to a 100% renewable (PV + wind) grid more cheaply than one also using new nuclear power plants.

Hopefully if not 100%, 99% with some coal burning in emergency. Would that work?