What you'll notice is that Lignite (=Brown Coal)+Nuclear+Biomass+Water (i.e. the base generation) are sitting at the lowest point of consumption for the day.
Solar will only be able to increase (without storage) until there is no black coal used.
Correct, but Wind is already taking over large parts of the lignite part.
And the pumped water is storage for solar, btw.
For us as a society, it doesn’t matter if we end up with 100% solar, but only that we end up with 100% combined of Biomass, Pumped Hydro, Wind, Solar, Water.
Solar will only be able to increase (without storage) until there is no black coal used.