The Social Construction of Complex Systems.- Complexification in the Energiewende.- Present Energy Metabolism and the Future of Renewables.- Hierarchies, Power and the Problem of Governing Complex Systems.- Community-based Initiatives to Enhance the Sustainability of Energy Systems.- Convergence of Biophysical and Socioeconomic Models of Resource Systems in the Long Term Based on a Complex Systems Approach.- Energy Conservation Policies in the Light of the Energetics of Evolution.- Ontological Fallacies Linked to Energy, Time and Information.- Energy, Time and Social Practice: From Abstractions to Dynamic Processes.- How Flexible are Households in their Energy Consumption? An Analysis of the Rhythm of Everyday Life and its Consequences for Peak Shaving.- Two Political Views on Energy: The Mechanic and Experimental Regimes of Bodies.- Radical Transitions from Fossil Fuel to Renewables: A Change of Posture.- Decomposing Energy Grids: Energy and Power Between Corporate Actors and Final Users.- Complex Adaptive Systems and Energy-saving Social Practices.- Grid Dependencies in the Time of Renewables.