1. Worldwide Energy scenario 2. Utilization of renewable energy 3. Centralized and Decentralized energy systems 4. Polygeneration 5. Components for polygeneration system 6. Processes for polygeneration systems 7. Methodologies for polygeneration systems 8. Coal-based systems 9. Biomass-based systems 10. Solar-based systems 11. Hybrid renewable systems 12. Combined Cooling, Heat and Power systems 13. 4th generation district, heating and cooling network 14. Polygeneration systems in buildings 15. Control strategies and system optimization