## 1 Introduction  
Nowadays, electric utility services are facing a series of legislation changes that totally alters the power environment. This has caused the emergence of problems that make the grid management difficult and are still not solved. Those abrupt changes in the power system could be justified from the point of view of the market policies and from the point of view of the reliability and manageability of the grid. On the other hand, market policies are currently being influenced by the concept of \"unbundling\". This principle establishes that the activities of generation, transmission, distribution and the electric supply must be managed by independent organizations, or even by regulated entities, as could be the transmission activities in the case of Europe [1]. Of course, the implementation of this idea requires a totally new way of operation in terms of information sharing amongst the implied agents of the power system and its management [2]. An example of the role of legislators toward the impulse of a more advanced power system can be seen in the Energy Independence Roadmap for the United States [3], which was done during the term of [PERSON] in 2013. This roadmap established the principles and objectives to promote those changes in the power system. Notwithstanding, the advances to reach those improvements for the power system have been accelerated by the influence of catastrophic natural disasters suffered by the US in the past [4]. For example, extreme weather events like torrential rains out of the blue or heavy snowfall, earthquakes and huge fires in some regions, where normally these types of destructive events did not occur. This is where the second mentioned cause takes importance, due to the need of a more reliable power system that could be flexible enough to minimize the effects of those natural disasters. Due to this situation, the United States of America considered that it was necessary to take action. As an example, in 2014 the US Senate passed a bill [3] where they showed their support to distributed energy system connected to the power grid (like microgrids) to reduce the effects of the described natural and climate disasters, making the electric power distribution more resilient and proactive towards the unexpected and destructive climatic events [5; 6]. This support stimulated the developing of multiple initiatives in the field of microgrids and distributed power system. Some examples are grants, demonstration projects, university research, and multiple studies to estimate the costs involved in the industry transformation and to decide what could be the most adequate federal policy actions to continue and support this developing [7; 8]. In this sense, another significant decision (from the point of view of legislation) was the Energy Policy Modernization Act of 2015 [9], promoted by the US Senate on September 2015, with the objective of promoting the US Grid improvement. From a global point of view, this modernization of the grid can also be seen in the same line in the rest of the world, as in Canada [7] and Europe, where the \"unbundling\" has also been implemented in recent years. Currently, in the case of Latin America, particularly in Chile and Brazil, changes in the electric legislation are under study by legislators and various federal and local authorities with the collaboration of industry stakeholders to promote various policies and technologies whose application can constitute a more secure and reliable power grid. Those initiatives are being promoted by big players like ENEL, who have spurred on several pieces of legislation not only in North America but also in South America [10]. In this situation, Chile is also moving toward power grid improvements as part of the energy matrix modernization plan of the country, firmly advancing towards a greener, more sustainable and energy efficient state through the use of renewable energies and less dependence on fossil fuels.