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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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. 



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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News Market

Invitation for the MARI Stakeholders Workshop

The Guideline on Electricity Balancing (GLEB), approved by EU member states on March 16th 2017, defines relevant tasks and a timeline for the implementation of an European platform for the exchange of balancing energy from frequency restoration reserves with manual activation (mFRR).  

Given the importance of an efficient balancing mechanism for an integrated electricity market, 19 TSOs signed a Memorandum of Understanding on April 5th 2017, which outlines the major cornerstones of the cooperation. Shortly after, the project has been officially named MARI (Manually Activated Reserves Initiative). MARI strives to consider all TSOs tasks and timeline under the scope of the GLEB provisions concerning mFRR and aims to create the mFRR platform, which fulfills all respective provisions of the GLEB.

The MARI parties view the communication with stakeholders and their feedback as essential for achieving the project goal – the development of an user-friendly and liquid platform. As a result, we aim to establish communication with stakeholders already at a very early stage of the project via a stakeholder workshop. This workshop would provide a comprehensive picture about the MARI project, so that stakeholders gain a good understanding about the features of the platform under development.

Consequently, we would like to invite you to this  

workshop, which will be held on 4 September 2017 at the ENTSO-E premises in Brussels.

Since the number of participants is limited, we would like to stress that we accept only participation of 1 person per 1 company.

Those who will not be able to join the meeting can also follow us through webcast (a link will be provided to registered participants). However it has to be mentioned that you will NOT be able to make comments or ask questions during the meeting, when connected by the webcast.

Please send your registration to Lenka Linke at Lenka.linke(at)cz.ey.com as soon as possible by 18 August 2017 at the latest and indicate:

Subject: MARI Stakeholders Workshop

Your name and company

Your preference for participation: a) webcast; b) physical presence 

We are glad to having the chance to receive you feedback on our work and looking forward to a fruitful discussion.

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