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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Grid operators

The electricity grid is installed, managed and maintained by the Dutch and German grid operators. The grid operators are also responsible for connecting customers to the electricity network without prejudice.

The Dutch electricity grid

The Dutch electricity grid is installed, managed and maintained by the grid operators. TenneT operates the national high-voltage grid, while low-voltage electricity (150 kV or less) is transmitted by regional grid operators. The grid operators are also responsible for connecting customers to the electricity network without prejudice.

As the designated Transmission System Operator (TSO) of the DutchNetherlands’ high-voltage grid, TenneT has additional statutory duties. These include:

  • System services such as maintaining  the balance between electricity supply and demand
  • Securing a safe and reliable electricity supply
  • Importing and exporting electricity
  • Maintaining the system of programme responsibility parties 

For a full list of regional grid operators and more information, please visit the ACM website.

The German electricity grid

In Germany, the operators of the high-voltage grids, i.e. the 220 and 380 kV grids, are designated as Transmission System Operators. The Transmission System Operators are responsible for the secure transmission of energy, whereby they constantly monitor the balance between the demand for and provision of power and intervene in the market if necessary. In addition, they are responsible for the maintenance of the grid and its expansion as needed. In Germany, there are four Transmission System Operators, each of which is responsible for their control area. With a network ranging from the Danish border down to the Austrian border, TenneT is the largest Transmission System Operator. The TenneT system runs from north to south through the middle of Germany. Amprion GmbH, headquartered in Dortmund, is responsible for the transmission grid in western Germany (bordering on the Netherlands). The network in eastern Germany is operated by 50Hertz Transmission GmbH, headquartered in Berlin. TransnetBW, headquartered in Stuttgart, operates the transmission grid in Baden-Württemberg.

Go to www.bundesnetzagentur.de for more information.



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Programme responsible parties

At the end of every day, the programme responsible parties measure their actual electricity production or consumption and report this to TenneT.

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Electricity traders

Traders buy and sell electricity at competitive prices, directly from producers, via energy suppliers or on the Amsterdam Power Exchange (APX).

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Metering companies

Every party that purchases electricity from the grid is responsible for measuring how much they take and disclosing this information to their grid operator.

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