Since I can’t convince our building to put solar on the roof, perhaps I could convince them to at least lease it to someone who will, and collect free money for the budget. 

It is oddly difficult to find info on this – there is plenty of information, but it’s mostly applicable to people with individual houses, and this city has its own set of regulations and fire codes that might as well make it a different country. There are sales pitches from companies that do do work here, like VentureSolar, but what I want is to see if there are any pitfalls and downsides that I want to be aware of and address beforehand.