1. Introduction 2. Heat exchangers and nanofluids 3. Exergy analysis 4. Optimization techniques for solar energy applications 5. Solar power tower systems 6. Parabolic trough solar collectors 7. Solar water heaters 8. Performance of PV systems 9. Linear concentrating photovoltaic system 10. Hybrid solar PV/fuel cell power system 11. Geothermal power plants 12. ORC as waste heat recovery system 13. Wind turbines 14. Hydropower 15. Heat pumps 16. Energy storage 17. Neural network analysis in renewable energy systems