In face of diminishing resources, the importance of photovoltaics for our energy demands is increasing, so that producing up to 25 percent of required electricity in this way seems like a realistic long-term target from today’s perspective. Architecture must rise to meet the challenge, for the integration of photovoltaic systems with their hapticvisual qualities and materiality presents an inspiring new source of innovative design concepts. Intended for planners and architects, but also for the interested layman, this book outlines the huge variety of design of photovoltaic modules, showing realized buildings as examples. A system catalogue gives detailed descriptions of all material aspects and suggests possibilities for an original, aesthetically pleasing use of photovoltaics.