Berlin 380-kV electric line

The Berlin 380 kV electric line is a 38.3-km double-circuit high-voltage electric three-phase power line in Berlin. An unusual system for a municipality, it was installed by the West Berlin Bewag utility company during the division of the city. Since 1951, West Berlin had been cut off from the East Berlin and East German power networks, and maintained an independent power generation capacity that was not connected to any other power grid. Berlin was connected to the western European power grid in 1994, following German reunification, by extending the 380 kV line.

The first section of the line, which entered service in 1977, was an interconnector that consisted of a 2.6 km overhead transmission line and an 8.1 km underground cable, which ran from Reuter power station in Spandau to Mitte substation in Tiergarten. It was the first time plastic insulators had been used.