Evidence suggests that this 20th century system is now struggling to keep up with the challenges of electric power transmission and distribution in the 21st century. Work needs to be done to make the grid available, selfhealing and more secure’, and what are the implications for the integration of more grid-connected renewable energy projects & IOT in the future. Aging energy infrastructure based primarily on technologies that dates back to the 1970s and 80s is simply straining to meet the needs of modern generation and consumption pattern. This chapter gives an overview of multiple challenges facing the electric utilities and snapshot of new technologies, each of which are explained in details in subsequent chapters