This book includes peer reviewed articles from the International Conference on Sustainable Energy and Environmental Technology for Circular Economy (SEECE 2024) held from 04th to 06th August in Bangkok, Thailand. It presents recent advances in sustainable energy and environmental technology for circular economy. Topics include but not limited to are: Renewable energy, biomass conversion, materials for energy and environment, energy efficiency, optimization and AI in energy, energy management, policy and economics, and green manufacturing. It provides a platform for professionals and researchers to exchange ideas on these important topics and foster future collaboration.