With the theme of “Independent Technology Innovation and Energy Information Integration", the 4th Energy Interconnection Technologies and Application Summit will continue to deep explore the topics about energy interconnection technology and development, integration of energy information technology, comprehensive energy services and industrial upgrading. It will involve discussions regarding: energy interconnection policies and development, demonstration projects, technical and standard systems; energy interconnection, integrated energy, multi-energy complementary structure and key technologies; “Power - Grid - Load - Storage” and “Cloud - Communication - Edge - End” platforms as well as energy trading; the integration and collaborative optimization of new technologies such as energy and big data, cloud platform, IOT, mobile computing, AI, block chain, 5G, etc.