In this paper, a holistic review of the energy Internet evolution in terms of the architecture, types of ERs, and the benefits and challenges of its implementation is presented. An exhaustive summary of the designs and architectures of the different types of ERs is also. What was once a centralized, one-way system is becoming a dynamic, distributed and deeply connected digital network, something I often describe as building the “energy internet. ” With millions of interconnected nodes — solar, wind, storage, electric vehicles (EVs), smart buildings and more — all. Energy Internet is a concept proposed to harness, control, and manage energy resources effectively, with the help of information and communication technology. It improves a reliability of the system, and provides an increased utilization of energy resources by integrating the smart grid with the. Then, we propose a new universal definition of the EI by bringing together the various existing definitions and concepts in light of the upcoming smart grid. We also pinpoint the fundamental technologies responsible for ITM University Gwalior, India. The. t is of significant importance to realize the decarbonization of energy systems for carbon-neutrality.