The strength of a building's roof may well be what prevents it being covered with solar panels. On older buildings, the columns that hold the roof up will only have been designed to take the roof itself, not dozens of solar panels, and the metal framework needed to support them.
The strength of a building's roof may well be what prevents it being covered with solar panels. On older buildings, the columns that hold the roof up will only have been designed to take the roof itself, not dozens of solar panels, and the metal framework needed to support them.
