Germans do know it and balcony solar systems are booming here. They are small solar systems with 1-2 modules that you simply plug into an outlet. And that's it. You produce up to 800W of electricity, reduce your power bill and they are dirt cheap - german deals pages sometimes have them for under 200€.
They are easy to install (just place them somewhere where the sun is shining and bolt/strap them down so that they are stormproof) and plug them into an outlet. You will pay less for electricity, it helps in the fight against climate change and has the neat effect that you buy less fossil fuels from Russia, the USA, Saudi-Arabia, Katar and other nice countries.
Your local regulations might vary and you might have to discuss this with your landlord. The regulations in Germany are quite relaxed, you basically have a right to use them even in rental properties.
And if you have the space: Think bigger and buy a bigger solar system for your roof. They rock and it's awesome to produce your own electricity.