Until recently, the state of Bavaria had special stimulus funding for individuals and businesses to buy solar panels in a certain period of time. My travels (or at least, what I see out the window while on the road or rails) confirm that quite a number of people took this offer and invested in solar energy.
This Aldi supermarket has its entire roof covered in solar panels, and a display of its rate of return just outside the entrance. It bears mentioning that Germany is not a country known for its sunny weather, and yet this is working. Solar farms don’t need to be in the desert.
Alas, since the end of this renewable-energy stimulus plan, German solar energy companies have been reporting losses. One hopes fervently that Bavaria will re-institute it, especially now that Germany is going off nuclear energy for real. I am a great believer in it, and happy that at least this country has put some money into giving the industry a kick-start.