"The construction, lonely in its current position and strongly resembling the monolith from 2001: A Space Odyssey, comprises 7,776 solar cells and is capable of generating up to 30,000 kilowatt hours of electricity per year. From 2017 it will power the elite car manufacturer's new Berlin-Adlershof Porsche center."
The hell it will. It'd be a stretch to say it will power the hand driers in one of the executive washrooms at the new Berlin-Adlershof Porsche center.
30,000 kilowatt hours is about 108 gigajoules. 108 gigajoules over a period of 3.154E7 seconds is an average power of 3.4 kilowatts, or about 4.5 horsepower.
This is pure marketing puffery.