The first comprehensive reference work on the energy-independet Aktivhaus.The Aktivhaus is a logical development of existing building standards. As far as possible, it uses renewable energy from the sun and wind to satisfy energy demands. The basic ideas of the Aktivhaus are described in detail in this work and serve as a planning guide for all aspects of Aktivhaus construction. From the principles of sustainable and energy efficient construction to planning tools and technical details, the reader learns what constitutes the Aktivhaus, how it was developed, and the components needed for its contruction. Built works illustrate Aktichaus architecture used in residential and non-residential buildings, in new constructions, and in renovation.