Renting solar systems on the roof?

oh thanks for all your answers but I already realize that I can't get any further like this, somehow no one has precise information about the topic, but I need that. I have to ask around some more, if I find any information, I will let you know.

A discreet integration of solar cells and collectors into the roof or house wall is often difficult because the materials often differ significantly in appearance. But it is basically possible. Electricity price calculators should already be usable here as well.

A discreet integration of solar cells and collectors into the roof or house wall is often difficult, as the materials often differ greatly in appearance. But in principle, it is possible. Electricity price calculators should already be usable here as well.

But please, anyone who finds more information, also get in touch with me, thanks!