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.

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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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Congestion management

Congestion management uses price mechanisms and market forces to manage electricity supply and demand. TenneT works with the regional grid operators to operate the system.

Latest news

TenneT congestion studies update


TenneT expects the ongoing congestion management studies to be completed as of September. The various studies are in full swing and extensive market...

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Publicatie congestiegebieden Liander 14-04-2022


Liander heeft op 14 april nieuwe vooraankondigingen en uitkomsten voor congestiemanagementonderzoeken gepubliceerd voor congestiegebieden in...

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TenneT in search of flexible power in Brabant and Limburg


The national grid operator TenneT is looking for parties in Limburg and Brabant who can flexibly handle their electricity supply and demand. This...

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Managing electricity supply and demand

The number of electricity producers in the Netherlands is set to increase in the coming years. Experience shows producers tend to cluster together in certain regions (e.g. at the Maasvlakte 2 site in the Port of Rotterdam and around the Ems estuary in the North Sea), significantly increasing the electricity output in these areas. To avoid a situation where the electricity supply exceeds the grid capacity (congestion), we implement a congestion management system. 

Congestion management uses price mechanisms and market forces to manage electricity supply and demand. TenneT works with the regional grid operators to operate the system. 


A producer wants to supply six megawatts (MW) of electricity that he has already sold on the energy exchange. By adding up all the electricity produced in a particular region and subtracting the expected usage, the number of megawatts this region is willing to supply can be estimated in advance. For instance, if 600 MW has been planned while there is only scope for 400 MW, the producer can offer to refrain from supplying the 6 MW he has produced. The producer makes this offer through his Programme-Responsible Party (BRP). In this way, the producer contributes to a reduction of the demand for transmission capacity. The producer indicates the price he is willing to pay for not producing electricity. On balance, this is advantageous for the producer, as he saves on variable costs while retaining his revenue from the sale of 6 MW of capacity on the energy exchange.

Although the problem of excessively high supply has now been tackled, another problem has come into being: the missing 6 MW still have to be supplied, but from another region that still has sufficient transmission capacity. Therefore, a party willing to produce the additional 6 MW is sought elsewhere.

Once all the arrangements have been made, we have to check whether the producer abides by them. After all, the risk remains that the producer who agreed not to supply his 6 MW of capacity will do so nevertheless, for instance because he sees on the energy exchange that an electricity shortage exists in the Netherlands. Meeting that shortage can be very profitable. However, this is technically not possible, as there is insufficient transmission capacity in the producer’s region. Consequently, a producer who supplies capacity in violation of the agreement, will not receive any payment.

In the final analysis, this approach results in a new balance between the available transmission capacity and the capacity supplied by electricity producers. This will enable grid operators to take adequate measures to adjust the transmission capacity, so that the grid has sufficient capacity to meet the increasing demand.


Market coupling

TenneT works closely with other European TSOs and electricity exchanges to couple electricity markets in North West Europe. 

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Balance responsibility

Connected parties are responsible for informing grid administrators of their planned electricity production, consumption and transport needs.

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The TenneT tariffs exist of two components: the connection and transport tariffs.

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