Our's don't...
Even Peter Zeihan has said that Germany is a terrible place for solar panels. This is because Germany has a high percentage of days that are cloud cover/overcast. Ziehan has solar panels on his house in Colorado. He at a place that gets over 300 days of sun annually. He is also at higher elevation where it is cold. Solar panels work better when they are cold.
The point is the Germans(and US) should be building nuclear power plants just like their neighbor France. It is like putting up wind turbines in places that are not very windy. Wind turbines are generally bad in most places. They are really stupid in places where there are not sufficient winds.
Our's don't...