The paper provides a short overview of the main principles of teaching the history of electrical engineering at LETI and at LUT. At both universities the teaching of the history of electrical engineering has been actively promoted. Recently, the cooperation and exchange of experience in the field of lecturing "History of electrical engineering" has been developed. The history of electrical engineering from the ancient times to the 20th century is treated. The respective courses address e.g. the emergence of electrical engineering as a field of science, some electrical machine applications, and the development of radio. The main goals of the courses are to motivate the students in their basic studies by introducing the difficulties faced by earlier researchers in their efforts to develop the electro-magnetic theory, to form the professional profile of the future electrical engineers and to improve their technical English skills. Some national aspects in the history are emphasized. E.g. the influence and role of professor Popov in Russia and Gottfrid Stromberg in Finland are discussed. The example slides of the course presentation illustrate the contents of the course. The first experiences on the introduction of the Russian postgraduate course version at Lappeenranta University of Technology are discussed.