A solarphotovoltaic (PV) system, mounted on the roof or integrated into thefaçade of a building, is an electrical installation that converts solar energy intoelectricity. This can be used to meet the building’s own energy consumptionrequirements or, in certain situations, fed back into the electrical grid.The urban environment provides a large amount of empty rooftop spaces and can inherently avoid the potential land use and environmental concerns.