Our key tasks

We are primarily tasked with providing power transmission services, system services and facilitating the energy market. Our core tasks follow from our appointment as grid operator under the Dutch 'Elektriciteitswet' (E-wet) and the German 'Energiewirtschaftsgesetz' (EnWG).


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TenneT presents Hub and Spoke concept for large scale wind energy on the North Sea.

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Our grid

TenneT manages the high-voltage grid in the Netherlands and large parts of Germany. TenneT transmits electricity at 110,000 volts (110 kV) and higher. With over 22,500 kilometres of high-voltage lines, we cross borders and connect countries.

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Grid maps

Maps of our onshore and offshore high-voltage grid.

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Electricity market

The energy sector is developing rapidly. The process of European market integration began some years ago. Its purpose is to create a single European market that enables market parties to trade gas and electricity across national borders easily and efficiently.

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Transparency data

We provide transparency data on our operations on our Dutch and German transparency page and on ENTSO-E. 

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Our vision is to be one of the most transparent Transmission System Operators (TSO) in Europe and thereby creating value for society. In this Energy Insights section we present selected energy related topics and show data, information and valuable insights. 


Energy transition

Wind turbines and solar panels are the physical signs of consumers’ growing desire for clean, renewable energy.

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TenneT is a leading European electricity transmission system operator (TSO), with activities in the Netherlands and in Germany. We strive to ensure a reliable and uninterrupted supply of electricity in our high-voltage grid for some 41 million people.

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We are TenneT

Meet us


160 kilometres long 900 megawatt DC connection



  • 160 km long and 900 MW capacity
  • 30 km onshore cable
  • 130 km offshore cable

Grid connection point

  • converterstation Emden/Ost Germany

Status of project

  • commissioning planned for 2019

About the project


In the BorWin3 project TenneT is building a 900 megawatt direct current grid connection system in the North Sea cluster 8. From the offshore converter platform BorWin gamma, where the three-phase electric power generated offshore is converted into direct current, the direct current is transmitted to Hamswehrum via a roughly 130 kilometres long subsea cable routed west of Borkum, and from there to Emden/Ost via a 30 kilometres long land cable. At the site in Emden/Ost TenneT is building a substation together with a converter station in order to convert the direct current back into three-phase electric power and feed it into the electricity grid.

The preparatory construction measures for the substation and the converter station in Emden/Ost have already been completed. The actual construction works will start there in autumn 2015. The horizontal drillings underneath the dyke in Hamswehrum were carried out in summer 2014, and the land cables were laid from spring 2015 onwards. It is expected that this work will be completed in spring 2016.

The project is scheduled to be brought into operation in 2019.


Cornelia Junge

Pressereferentin - Projektkommunikation Offshore

0049 (0)5132 89-2357

BorWin3 project

Commissioning planned for 2019.

Project downloads

Factsheet BorWin3 (german) (360 KB, pdf, 05/18/2016)

Eine 900 Megawatt starke und 160 Kilometer lange Gleichstromverbindung

Category: Brochures
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Die Naturschutzprojekte von TenneT (german) (785 KB, pdf, 08/02/2016)

Aufwertung der Lebensräume von zahlreichen Pflanzen- und Tierarten

Category: Brochures
Die Naturschutzprojekte von TenneT (german) Download Download

Also interesting

TenneT Offshore brochure

"Energie von See an Land" brochure about TenneT offshore projects and technology (german only)

Offshore projects in Germany

Our other german offshore projects.

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Media footage

Your way to our pressfootage.

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