Just 10 years ago, landlords could ban you from putting solar cells on your balcony because it makes their building look “messy”. Now Germany is really pushing forward to let everybody put solar modules on their balcony with these new laws. How is legalization of balcony solar cells in your country? Is setting up solar modules on your balcony easy or difficult law-wise?
At least in Germany it is legally required that rooms get a certain amount of natural light. There are transparent solar panels in development though, which could be just as much as a foil being put onto the glass itself. Not as effective of course, but still.
The stuff about rooms having solar access are for designers and architects to ensure they design to put those rooms in appropriate places to get those rates
Also to protect against development that would shade such a room (but actually the whole yard in my jurisdiction)