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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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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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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. 



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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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News Congestie Market

Pre-announcement congestion management network section Limburg

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Expected congestion area, period and cause

TenneT expects structural congestion, as referred to in Article 9.5 of the Electricity Grid Code, in the Limburg 150 kV grid section for the period 2021-2031. 

The Cuijk, Haps and Boxmeer substations in the province of Noord-Brabant form part of the Limburg 150 kV grid section. The expected congestion is caused by the growth of solar and wind production in the grid of the regional grid operator (Enexis) and TenneT. The resulting higher transport demand cannot be fully facilitated due to the limited available transport capacity in the high-voltage grid. 

What is the contracted and available transmission capacity?

This concerns a meshed grid section in which the relationship between the capacity that has been contracted and the capacity that can be facilitated is not one-to-one. When determining the available transmission capacity, TenneT also takes into account the simultaneity of the various types of generation and demand.  In the Limburg 150kV grid section, TenneT has assigned a limit to each substation that indicates the available transmission capacity. At the moment, the forecast contracted transmission capacity exceeds the available transmission capacity at the eight stations listed below. Limited capacity is still available at other 150kV stations in the grid section. A study will be carried out to establish whether application of congestion management in the Limburg grid section could lead to an increase in the limits. 


StationProvided contracted transmission capacity*Available transmission capacity
Boekend 150kV217150
Californië 150kV7935
Helden 150kV286150
Horst 150kV12850
Maasbracht 150kV9760
Nederweert 150kV14290
Venray 150kV47380
Weertheide 150kV6047

*Data supplied by Enexis. The stations Belfeld, Born, Cuijk, Gennep, Haps, Kelpen and Schoonbron are classified by Enexis as 'Phase 1', which means that there is limited transport capacity available for feed-in.

Grid Planning

The structural solution consists of splitting the Limburg 150kV grid into several grid sections, increasing the 150/380kV transformation capacity and upgrading and developing new connections. This concerns a large number of projects with interdependencies and different lead times. An initial expansion involves installing additional 150/380kV transformer capacity in the north of Limburg and splitting the grid section into two. Ultimately, three different 150kV grid sections are expected to be created, each with its own connection to the 380kV grid. 


TenneT is conducting research into the possibility of applying congestion management in the area referred to in Article 9.5, subsection 5 of the Electricity Grid Code.

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