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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Maintaining balance

TenneT continuously monitors and maintains the balance between the electricity supply and demand on the Dutch and large parts of the German grid.

Supply and demand

TenneT continuously monitors and maintains the balance between the electricity supply and demand on the Dutch and a large part of the German grid. If this balance is disrupted it may result in a power outage or even a black-out, depending on the length and severity of the imbalance. 

Whether the balance can be achieved, maintained and restored depends on three factors:

  1. All connected parties take the required Balance Responsibility and specify how much they expect to feed into and take out of the grid each day;
  2. TenneT calculates and deploys the reserve and emergency power that connected parties supply;
  3. TenneT and the programme responsible parties offset imbalances according to the imbalance pricing system.    

When there are not enough resources available to restore the balance, we can take additional measures – we have a mandate to prevent or limit potential damage to the power supply.  


TenneT in the electricity sector

TenneT is the sole transmission system operator (TSO) of the national high-voltage grid of the Netherlands. In Germany, TenneT is the biggest TSO among the 4 TSOs.

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Transport services

TenneT transports electricity along the high-voltage grid from where it is produced to where it is consumed.

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Market facilitation

Our goal is to establish a single market that guarantees consumers a reliable electricity supply at a fair price.

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