50Hertz Transmission GmbH

Grid Extension

For your secure electricity supply, we are currently planning the construction of several new 380-kilovolt extra-high-voltage overhead lines: The "wind bus bar" between Schwerin in Mecklenburg-West Pomerania and Hamburg, the Uckermark power line that will transport electricity from the region around Prenzlau in Brandenburg to Neuenhagen near Berlin, the Berlin 380 kV Northern Ring and the Thuringian "electricity bridge" connecting Halle (Saxony-Anhalt) with Schweinfurt in Bavaria.

Our projects:

The "wind bus bar"

The Uckermark power line

The Thuringian "electricity bridge"

Berlin 380 kV Northern Ring


Network extensions at a glance

Are the electric and magnetic fields produced by overhead conductors harmful to humans? more

Why are grid extensions necessary? more

What new construction projects are being planned by 50Hertz? 

The "wind bus bar"
The Uckermark power line
The Thuringian "electricity bridge"
Berlin 380 kV Northern Ring

How will the protection of nature and the environment be guaranteed? more

How does an approval process for construction of a new overhead line proceed? more

What is the difference between an overhead line and a buried cable? more

dena study

dena study shows new ways of integrating wind power into the national power grid
From the perspective of 50Hertz Transmission, this dena study is a crucial first step along the way to integrating wind power in the energy mix of the future and thus an important signal with respect to climate protection. more

Further information on the need for grid extension


Service security

"No network" – while this occasionally occurs with  mobile communications, it is completely inadmissible in the case of electricity supply. As electrical energy cannot be stored in large quantities, the quantity of electricity needed at any particular time must be generated. Consequently, power systems must be designed such that they can safely and reliably cope with the highest anticipated power demand. more


Impetus for the regions

In total, 50Hertz Transmission GmbH will be investing around 470 million euros in three power-line construction projects: Around 93 million euros will be invested in construction of the "wind bus bar", approx. 248 million euros in the "Thuringian electricity bridge" and approx. 130 million euros will go into the “Uckermark power line”. Throughout our projects, we will be involving local companies, thus providing an important impetus for regional development. more


Overhead line versus buried cable

Overhead lines or buried cable? In this controversial debate, the supposed advantages of laying underground cables as opposed to constructing overhead lines are frequently cited. However, positive ecological side effects from laying 380-kV underground cables are not to be expected. Quite the opposite: This technology involves restrictions for land owners as well as irreversible ecological damage. more