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 23,500 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. 

To transparency pages

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

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Customer news

All market and customer related news.

TenneT TSO B.V. has started the process for contracting Reactive Power for 2022


TenneT hereby invites potential suppliers to express their interest by sending an e-mail to the following e-mail address:tenderEenV@tennet.eu.

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High-voltage grid in Gelderland and Flevopolder reaches limit for electricity feed-in


The high-voltage grid in the provinces of Gelderland and Flevopolder is reaching the limit of what can be returned to the grid. The high-voltage...

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Part of Frisian grid reaches limit for feed-in of electricity


In the south and west of Friesland the limit for feeding electricity back to the national high-voltage grid has been reached. The high-voltage...

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Forecast congestion management grid section Friesland


TenneT expects structural congestion, as referred to in Article 9.5 of the Electricity Grid Code, in the western and southern part of 110 kV Friesland...

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TenneT goes Triple Green with EUR 1.8 billion Green Bonds


  • TenneT successfully issued its largest ever and first Green triple tranche eurobond transaction
  • Investors from 20 European countries placed orders...

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Transition to sustainable energy becomes visible in electricity mix


Maarten Abbenhuis, TenneT's COO: "The energy transition is in full swing and is becoming increasingly visible in the electricity mix. We can see the...

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Our customers

Our customers include everyone connected to the high voltage electricity grid as well as the parties responsible for metering and programme responsible parties.

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Customer Relations Managers

Our Customer Relations Managers represent TenneT and act as a single point of contact for customers.

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Customer Care Centre

Our customers are important to us and we apply high standards to our customer service, which we constantly strive to improve.

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