The 2024 5th International Conference on Clean and Green Energy Engineering aims to bring together researchers, practitioners, and professionals from the industry, academia, and government to discuss the latest research and development, as well as professional practices in the field of clean and green energy engineering. The conference will be held in Izmir, Turkey from August 24-26, 2024, and will provide a forum for participants to share their original and high-quality contributions related to clean and green energy engineering, including theories, methodologies, and applications.