Where can Solar PV be used?
A. Photovoltaic systems are arranged in modular panels which can be fitted to the top of roofs (looking similar to a Velux roof-light) and in slates or shingles which are an integral part of the roof covering (looking similar to normal roof tiles). Photovoltaic cells can be incorporated into glass for atria walls and roofs or used as cladding or rain screen on a building wall – this is particularly suitable for prestige offices. They can also be attached to individual items such as street lights, parking meters, motorway noise barriers or the sides of bridges. Photovoltaic systems can be discreet through being designed as an integral part of the roof. An ‘invisible’ design using slates or shingles as opposed to an architectural statement is likely to be preferable if in a sensitive area. Ideally photovoltaics should face between south-east and south-west, at an elevation of about 30-40°. However, in the UK even flat roofs receive 90% of the energy of an optimum system.
