Do flats and apartment buildings create a problem for household solar proposals?
Short answerThey require a building-level installation. Flat roofs can help with panel orientation, access and space for equipment, and suitable walls provide another possible mounting surface.
NotesApartment buildings would need a shared installation planned at building level. Flat roofs can simplify the work because panels can be oriented as needed and installers have a level surface. Some associated equipment can also sit on the roof. A south-facing seafront building supplies an example of a proposal to mount panels on both its walls and roof, though whether that scheme was implemented is uncertain.