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 presented. umption resulted climate change urges a transformation of the energy sector. The dumb centralized grid marches on a metamorphosis to a smart, distributed grid and a diversity of new market roles, business models and technologies are spawned. We also pinpoint the fundamental technologies responsible for ITM University Gwalior, India.