This research includes a work methodology adapted to the requirements of a real technical engineering project. It is included in the subject of power lines and substations of the bachelor’s degree in electrical engineering of the University of León in order to bring the student closer to the real practice of overhead medium and high-power line projects. The methodology applied in the activity promotes the use of different free access spatial tools that allow the student to approach in a systematic and reliable way the preliminary design that will condition the final layout of the power line and the technical and economic feasibility of the project. Beyond these geospatial location tools, the methodology includes the handling of the electrical calculation software dmELECT with which the student will be able to familiarize himself and increase his skills in the specific field. The contribution is clearly expected to help the students to contextualize the theoretical knowledge, so better understand the challenges they will face in their career as future professionals.