The article is dedicated to the 90th anniversary of the Department of Electric Power Transmission of the National Technical University ″Kharkiv Polytechnic Institute″. The main stages of creation and development of the department are presented, data on outstanding specialists and scientists who took part in the creation and development of the department are given. A retrospective analysis of the main areas of research conducted by employees of the department for the entire period of its work. The main aspects of educational and methodical work of the department are considered. The current state of scientific and pedagogical work performed by the staff of the department is analysed, and the most promising areas of its development are presented.