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 around 24,500 kilometres of high-voltage lines, we cross borders and connect countries.

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Offshore Outlook 2050

Already by 2030, the originally planned capacity of 15 gigawatts of offshore wind energy will increase to 20 GW.

To Offshore Outlook 2050
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. 



Facts & figures related to TenneT facilitating the market can be found here.

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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 42 million people.

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We are TenneT

Meet us

Dutch offshore grid

The Netherlands is heading towards a sustainable energy supply. Wind is an important source of sustainable electricity. Wind on land, and especially: wind at sea. TenneT is the offshore grid operator. This means it’s TenneT’s responsibility to ensure that offshore wind farms are connected to the onshore grid via the offshore grid to enable the use of the energy that is generated at sea. Construction of the offshore grid contributes to TenneT’s ambition to be a driving force behind the energy transition.

Offshore grid in steps

Programme 2023

Roadmap between now until the end of 2023

  • Net op zee Borssele
  • Net op zee Hollandse Kust (zuid)
  • Net op zee Hollandse Kust (noord)
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Programme 2030

Roadmap for 2024 - 2030

  • Net op zee Hollandse Kust (west Alpha)
  • Net op zee Ten noorden van de Waddeneilanden
  • Net op zee  IJmuiden Ver Alpha
  • Net op zee IJmuiden Ver Beta
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Long term vision until 2050

Dutch offshore grid long term vision

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Fewer costs, less inconvenience

Several wind farms are grouped together in a wind energy area. The offshore grid ensures that these wind farms are combined as much as possible for connection to the national high-voltage grid. This means fewer cables and shore points are needed. That reduces costs significantly and is less disruptive for the environment.