The following document deals with the analysis that is made to the energy-generating company Isagen S. E.S. P, with regard to institutional theory and the principal authors, who explain how an organization can be understood as a social entity and how it interacts with other institutions, to carry out commercial transactions with each other. On the other hand, the theory of internationalization of companies also plays an important role in the process as they influence several factors that allow to better understand this event and finally performs a vertical analysis that allows to visualize the importance of some accounts on the balance sheet, and what effect do they have on the economic situation of the company during the period 2011-2016.