This book aims to present a systemic perspective to energetic transition to a discarbonated society implying an increase of energetic efficiency of current production process, new way of energy production - integration of renewable energies, re-use of wastes. Main societal functions are analyzed in order to highlight the ongoing process of technological and non-technological innovations: transport and mobility, food, building. The purpose of this book is to analyze from a global perspective the energetic innovative system on building and to understand the limits of its development and potential new actions.