This book constitutes the refereed proceedings of the 8th EAI International Conference on Smart Grid and Internet of Things, SGIoT 2024, held in Taichung, Taiwan, during November 23–24, 2024. The 19 full papers included in this book were carefully reviewed and selected from 45 submissions. They were organized in topical sections as follows: IoT, Artificial Intelligence, Edge Computing; Wireless Sensor Network, Mobile Robot, Smart Manufacturing; and Protocol, Algorithm, Services and Applications.