As global decarbonization efforts intensify, the Energy Internet's core components—including smart grid situational awareness, renewable integration optimization, AI-driven microgrid control, and cloud-based big data analytics—are critical to addressing challenges in grid. As global decarbonization efforts intensify, the Energy Internet's core components—including smart grid situational awareness, renewable integration optimization, AI-driven microgrid control, and cloud-based big data analytics—are critical to addressing challenges in grid. Energy Internet, a futuristic evolution of electricity system, is conceptualized as an energy sharing network. 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 Energy Internet represents a transformative paradigm integrating advanced power systems, distributed renewable energy, and digital technologies to achieve efficient, resilient, and sustainable energy management. This review examines the critical role, applications, enabling architectures, security considerations, and future.