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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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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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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News Dutch Project

TenneT and Nuon to realize ‘black start’ facility for northern Netherlands

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TenneT and Nuon have concluded an agreement for the realization of a so-called ‘black start’ facility at Nuon’s Magnum power plant in Eemshaven in the north of the Netherlands. The facility will ensure that power to the high-voltage grid is quickly restored after any black-out that would leave the Netherlands temporarily without electricity.

Security of supply

Although such a black-out is highly unlikely, TenneT must be prepared for this situation under European agreements. Nuon will make the black-start facility available as of 1 January 2018 on the site of its Magnum power plant in Eemshaven. In the event of a black-out, the facility must be started up as quickly as possible upon TenneT’s request and must subsequently remain available for at least 24 hours.


In a black-out situation, a recovery facility is needed to restore power to the grid. The  power plants in the Netherlands must be started up again. The black-start facility at Eemshaven will supply electricity to start up one of the units of the Magnum power plant, which can then be used to start up other plants. The black-start facility thus serves as a ‘starter motor’ to put the power plant back into operation, and subsequently the grid as a whole. TenneT has concluded contracts with the operators of three similar facilities in the northern, central and southern Netherlands.


The black-start facility at Eemshaven will consist of a diesel emergency power generator, a gas turbine generator, and one of the three units of the Magnum power plant. One notable aspect is that Nuon will not build an entirely new installation, but will relocate an existing gas turbine generator to the site of the Magnum power plant. Work on the black-start facility will start in early 2017. 

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Jeroen Brouwers

Media Relations

+31 (0)26 373 26 00


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