I don't know that because it is utterly untrue, as is easily verified by looking up plenty of available data in the German electricity mix - it's replaced by the growth in renewables, fossil fuels have continuously shrunk https://strom-report.com/electricity-mix-germany/.
If you don't want to out yourself as a hardcore ideologue you should argue with data instead of political talking points.
Congratulations on picking up far right "children's book author" talking points! I'd say that is more of a worthwhile economic activity than whatever Merz has done in his life. If you can't recognize the self-serving ideology of Germany's "conservatives", I do have some perpetual micro-nuclear reactors to sell you.