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

Offshore projects Germany

Since 2006 TenneT conducts several offshore projects in Germany.

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First German offshore grid connection

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First DC power link between an offshore wind park and the high voltage grid

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Powerful offshore grid connection with a capacity of 800 megawatts

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160 kilometres long 900 megawatt DC connection

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165 kilometres of cable for a grid connection with a capacity of 800 MW

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916 megawatt power line to connect three offshore wind farms



A 900 MW grid connection for offshore wind farms

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A new substation with two converterstation at Wykhoffweg

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First grid connection for offshore wind farms in the eastern section of the North Sea.

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Direct current grid connection of wind farms in the eastern North Sea

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Our third AC grid connection

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Norderney crossing

major routes for the previously-planned offshore wind farm transmission lines were bundled through Norderney

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155 kilovolt AC grid connection

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160 kilometer long subsea cable for the connection of wind farms off the coast of Sylt

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