Energy Internet integrates small-scale renewable energy systems, electric loads, storage devices, and electric vehicles for effective transaction of power backed by emerging technologies such as Internet of Things, vehicle-to-grid, and blockchain. In this chapter, we will discuss an overview of the Energy Internet and its major characteristics, the key technologies, namely energy routers, distributed energy resources, advanced metering infrastructure, and information and communication technology, that will play a major role in the. Building the Energy Internet involves transforming traditional, one-way power grids into decentralized, intelligent, and two-way, digital networks. Its features, such as plug-and-play mechanism, real-time bidirectional flow of energy, information, and money can lead to significant benefits and innovation in electricity production and. The paper begins by reviewing and critiquing the most common EI definitions seen in academic journals. The scientific literature is then divided into four categories, each of which represents a different perspective on the EI as shown through its definitions, assumptions, scope, and application. The Energy Internet is an important segment of overall Industrial Internet solutions. We expect Huawei to empower E2E Energy Internet solutions through partnership and open ecosystem foundations. >> I CT Insights magazine recently interviewed Sanqi Li, Huawei Chief Scientist, about the Energy.