The results of the experimental verification of the implementation of the methodical system for development of the professional competence of future electrical engineering teachers are presented. The implementation of the methodical system was based on the regularities related to the internal structure of the system and its external connections. The components of the methodical system: content, methods, forms and technologies for future professionals training were. It was proved that the efficiency of the development of future teachers’ professional competence in electrical engineering depended on the methodology, educational technologies and forms for students’ learning and cognitive activities. It was substantiated that the important component in such a process was a scientifically substantiated and verified methodical system based on the model of professional competencies future electrical engineering teachers, the theoretical foundation of competence-based training and up-to-date scientific findings in pedagogy aiming for continuous improvement of their pedagogical and technological knowledge and skills, personal and professional qualities, development of general culture and value orientations. It was determined that the purposeful development of future teachers’ professional competence in electrical engineering is possible through the use of pedagogical technologies, such as personality-oriented technology, project-based and problem-based learning, use of information and communication technologies. The effectiveness of the implementation of the methodical system for the development of the professional competence of future electrical engineering teachers at Ukrainian universities has been experimentally proven.