KR Solar Panels could be anywhere
In Qatar if they were kept at 6feet height & facing the ground then too it would produce some amount of electricity, so by that standard panels could be placed external surface & roof of buildings, etc.

Carparks.. can have solar panels on the roof and also under the roof facing downwards and even on the inside part near the side of the wall...

I think Carparks due to their unique structure can capture more amount of sun rays than any other structure having same floor space...