Smart grid is a revolutionary upgrade to the traditional power grid by adding communication capabilities, intelligence, and modern control. This book addresses the communication infrastructures, related applications and issues in smart grid. Unlike traditional power grid, smart grid has advanced communication infrastructures to achieve two-way information exchange between service providers and customers. Because of the communication infrastructures and modern control, grid operations in smart grid are more efficient and more secure. Many well-established and cutting-edge communications, big data analytics and network security technologies are looking to smart grid to achieve “smart” and efficient grid operations. In recent years, smart grid has attracted more and more attention from industry, research, and academia. There is a need for a comprehensive book to investigate and summarize the recent advances in smart grid communications, big data analytics and network security. This book will investigate technologies, applications and issues in smart grid communication infrastructure.