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. 

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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

Meet us

Grid losses

Grid losses inevitably occur during power transmission and result from the difference between energy feed-in and withdrawal. They can occur, for example, in the form of ‘corona losses’ (electrical discharge with a luminous effect) or as heat losses in conductors or transformers.

Grid losses depend, among other things, on the current, the voltage, but also on the distance electricity has to be transported. As more renewable electricity is fed into the grid these distances are increasing, as wind and solar electricity is often generated in remote areas, far from where most people consume it.

Transporting electricity a long way can cause larger grid losses compared to smaller quantities of electricity, or when transporting it over a smaller distance.

Grid losses contribute to more than 90% of our CO2 footprint. We are increasingly working to reduce our grid losses while at the same time optimizing our carbon footprint.

...further data of the Energy Transition

Forecast & actuals wind

Forecast & actuals solar

Vertical grid load

Annual peak load