Software integration plays an important role in enhancing the simulation capacities. The objective of this book is to explore the role and possibility of integration of two simulation software widely used in engineering projects: PSCAD/EMTDC and MATLAB. Both Softwares have peculiarities that are very useful to some of the projects, being different from each other on the functions presented to the users. Many obstacles were encountered during the software installation and integration processes, so these problems were described objectively, unrevealing the solutions, in order to assist the willing users to use this interface. PSCAD/EMTDC and MATLAB simulation configurations are explained and exemplified, once the configuration need to be flawless because software need to recognize the data correctly. Some PSCAD/EMTDC tools are also presented here in order to improve the understanding of this software, so it is easier to reduce problems with the integrated simulation time, which, in some cases, proved to be important. If the simulation time isn't very important for a project, the interface can replace these tools.