The article carried out a systematic analysis of the functioning of existing electric power systems. Based on the results of the system analysis, problems and shortcomings of the processes of functioning of electric power systems were identified, for the elimination of which the use of an intelligent information electric power system was proposed. In this work, the principles and requirements for the creation and application are formed, and the structure of the intelligent information electric power system is developed, which includes the subsystem of support, databases, knowledge and functional blocks, and tasks. Using the methods of system analysis and information processing, a block diagram of the information support of intelligent information electric power systems has been developed. This article also provides generalized goals for improving the efficiency of using the potential capabilities of the control object, the main functions in the formation and adoption of control decisions in intelligent information electric power systems.