In this technical paper, concepts and applications in electrical systems are presented on two topics: a) the evolution of the operation of electrical systems and b) the optimization of a traditional SCADA system. Also, the terms related and usual in the community of the area of energy and electricity related to: systems of energy management, planning of electrical systems, intelligent networks and micro-grids are presented. The purpose of this paper in this Part 1 is to emphasize that electrical systems need to be updated and improved using tools that allow them to integrate real-time simulation and prediction. The operational reliability, nowadays has an important role in the advances and technological developments of electrical power systems. The contribution of this article is focused on related cases, in implementations of this solution to provide versatility to the electrical systems and their energy management.