The architecture of modern IT support for the electric power sector is considered, including its basic characteristics, the integration of contemporary information and communication technologies, such as cloud and fog computing, as well as the security and quality of service. The architecture of modern IT support for the electric power sector is considered, including its basic characteristics, the integration of contemporary information and communication technologies, such as cloud and fog computing, as well as the security and quality of service. The European Union (EU) has a high level of energy security, enabled by oil and gas reserve stocks, and one of the most reliable electricity grids in the world. However, a number of established and emerging trends pose new challenges to the security of energy supply, notably in the electricity. This chapter presents the development of the Energy Internet throughout the history as an evolutionary solution based on modern technological development and needs, with the respect of its architecture, key features, and key concepts, such as energy router, prosumer, and virtual power plant. The. Among the different architectures, the FREEDM architecture of EI is the most commonly employed. This is due to the fact that it considers a flexible and distributed integration and management of DRERs and DESDs with the existing power system, making a stable and reliable microgrid structure.
