With millions of interconnected nodes — solar, wind, storage, electric vehicles (EVs), smart buildings and more — all exchanging data and power in real time across the grid, the level of complexity presents significant engineering opportunities, along with new risks and responsibilities. With millions of interconnected nodes — solar, wind, storage, electric vehicles (EVs), smart buildings and more — all exchanging data and power in real time across the grid, the level of complexity presents significant engineering opportunities, along with new risks and responsibilities. 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. As global decarbonization efforts intensify, the Energy Internet's core. Building the Energy Internet involves transforming traditional, one-way power grids into decentralized, intelligent, and two-way, digital networks. It integrates distributed renewable sources, storage, EVs, and smart buildings, allowing them to exchange data and power in real-time to enhance. In this paper, we rst examine and analyze the typical popular de nitions of the EI in scienti c literature. The development of the economy and human society is closely related to the exploitation of expansive sustainable distributed energy systems and advanced technologies.