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.

To Offshore Outlook 2050
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. 

To transparency pages

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

Meet us

Power failures

Power grid failures can disrupt the supply of electricity, impacting people and businesses. TenneT works hard to ensure the reliability of its high-voltage grid.

99.99% grid availability

So far, the security of our supply is among the best in Europe, with 99.99% grid availability.
Although we make every effort to prevent power failures, interruptions to the electricity supply can still occur. When they do, we attempt to fix them as soon as possible. In some cases, however, the problem is so complicated that the power outage lasts longer than expected.

Should you experience any long-term inconvenience due to a failure in the TenneT grid, you will be appropriately compensated in accordance with the applicable legislation. Claims for compensation must be submitted to the distribution network  operator in your region.


We publish real time information on interruptions of power supply:

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Onshore projects Netherlands

Our Onshore projects Netherlands

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Grid expansion

To be able to transmit all the electricity generated by these  new power plants, TenneT is carrying out a large-scale expansion programme.

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Our high voltage-grid

The high-voltage grid is the backbone of the electricity supply system, connecting electricity producers to consumers, connecting and integrating electricity markets.

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