As on 16-5-1888, Transmission line pattern was developed and first 25kV Lauffen-Frankfurt transmission line was commissioned. In year 1912, first 110kV Lauchlammer - Riesa Transmission was commissioned. As on 17/4/1929, first 220kV Brauweiler - Frankfurt transmission line on 380kV tower was installed. As on 05/10/1957, 380kV Romesskirchen-Ludwinfsburg-Hoheneh and in 1967 first 735kV line in Queber Hydro was commissioned. First 1200kV transmission line is commission in Soviet Union in year 1982.