IEEES is a multi-disciplinary conference, the will provide an opportunity to present recent advances in the area of Energy. The “9th International Exergy, Energy and Environment Symposium” (IEEES-9), which is a multi-disciplinary international conference, will again provide an opportunity for researchers, scientists and engineers to present their recent advances and to discuss current problems, future needs and prospects in the area of Energy. The goal of this conference is to bring together researchers from all countries, disciplines and applications of energy, exergy and environment and to promote the exchange of new ideas and techniques in the energy conversion and conservation in order to reach a best “energetic efficiency”. During this conference, many attentions will be given to the “Green transportation and sustainable mobility”, especially for the new development of sustainable technologies for thermal comforts and green transportation vehicles. Furthermore, contributions about renewable and sustainable energy sources, strategy of energy production, carbon-free society and their complications will be important during this conference.