Germany has passed some lovely new regulation, google “Germany Balcony Power”
https://www.cleanenergywire.org/news/german-econ-ministry-simplify-installation-plug-solar-balcony-power-plants
In effect, German standards group https://en.wikipedia.org/wiki/VDE_e.V. and the government have drastically reduced the regulatory requirements for installing solar power. For less than 600W, you can basically just plug your micro inverter right into an outlet and strap the panels on the roof.
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Some facts that might make this make sense: