This is a great article about renewable energy in Germany https://www.technologyreview.com/s/601514/germany-runs-up-against-the-limits-of-renewables/
is interesting to produce so much electricity from renewable hope even more in the future.
I am a contractor in North Carolina, South Carolina, Georgia and Virginia. I can tackle any residential project big or small. One advantage is even if we perform a small renovation, we keep in mind the whole house. Please feel free to ask any question