Solar energy is to play an ever-increasing role in generating the form and affecting the appearance and construction of buildings. Photovoltaic systems (PVs) produce electricity directly from solar radiation and are becoming more widespread as their advantages become apparent. They are an advanced materials technology that will help architects design buildings which are environmentally responsible, responsive and exciting. This new guide provides an overview of how PVs work and how they are incorporated in the design of buildings. It will give designers a good idea of the variety and flexibility of Pvs and of their design and aesthetic potential. Seven contemporary case studies illustrate the use and application of photovoltaic systems.