This book shows that sustainable development should be analysed and managed as an innovation journey in which social, technological, political and cultural dimensions become aligned. The âe~journeyâe(tm) aspect captures the open and uncertain nature of sustainable developments and highlights the agency dimension, with actors navigating, negotiating, groping and struggling their way forward (and sometimes backward). The book addresses the following research questions: What are the key processes and micro-dynamics of innovation journeys? Which policy lessons can be drawn for managing sustainable innovation journeys? To conceptualize the multi-dimensional nature of innovation journeys the book draws on insights from industrial economics, evolutionary economics, sociology of technology, political science and cultural studies. The book develops several new conceptual frameworks that make different crossovers between these disciplines. These frameworks are empirically tested with case studies on biofuels, onshore wind power, low energy housing, photovoltaic solar cells, biomass and fuel cells. The empirical studies are also used to derive several robust lessons as to how policy makers can influence sustainable innovation journeys. This book was published as a special issue of Technology Analysis & Strategic Management.