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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Offshore 2030

By 2030, the originally planned capacity of 15 gigawatts of offshore wind energy will increase to 20 GW.

To Offshore 2030
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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Spare capacity from high voltage grid

The Dutch high-voltage grid has a very high reliability. The grid is available for the supply of electricity 99.99% of the time. One of the reasons for this high reliability is that our high-voltage grid has a double connection. This means that each connection generally uses 50% of its capacity. In the event of a failure or maintenance, the reserve capacity can be used almost immediately. It is therefore a kind of hard shoulder of the electricity grid.

The electricity grid is becoming increasingly busy. In particular, the arrival of solar parks is increasing demand for transport capacity on the grid. In order to transport all this extra electricity, the high-voltage infrastructure has to be expanded. These expansions take a lot of time and, moreover, only a limited number of technicians are available to carry out the work. In order to create additional capacity on the existing grid, we will open the emergency lane for renewable energy generators such as solar parks in a number of places from 2021. This will provide up to 30% extra capacity in a number of places. If a failure does occur, these generators will be temporarily switched off to make room on the hard shoulder. In this way we ensure that the lights always stay on and more solar and wind farms can connect to the existing electricity grid throughout the Netherlands.