Carbon peaking and carbon neutrality has risen to national strategy. The new generation of information technology represented by 5G is becoming the base of Digital transformation of economic society, and promoting the vigorous development of digital economy. At the same time, environmental issues such as energy security and greenhouse effect are increasingly becoming hidden dangers that hinder the sustainable development of human society, and the low-carbon transformation of energy is urgent. The deep integration of information and energy will become an important engine for promoting low-carbon energy transformation and achieving the “dual carbon” goal. This article will explore the theoretical basis of information and energy integration from the perspective of the integration of information and energy networks. The focus will be on analyzing the integration development architecture and key technologies from both aspects of “information synergy energy, energy synergy information”. Finally, from the perspective of information and energy bidirectional synergy, the application practice of empowering social and economic development is summarized, providing useful reference for practicing green and sustainable development.