Let's just say we have house roofs or car roofs. Those are free real estate for solar. However, here, if you want to set solar up as a private person to make revenue you get fucked over by electricy company giving you only lump prices for the energy AND politics give you the whole beraucracy nightmare because you could make 1.72€ revenue that are not taxed!!!11
I feel like it's simply not wanted to let small people participate in any way.