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 23,000 kilometres of high-voltage lines, we cross borders and connect countries.

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Grid maps

Maps of our onshore and offshore high-voltage grid.

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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 41 million people.

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We are TenneT

Meet us

Free cooling

In our substations we use air-conditioning systems to cool our buildings, maintaining a temperature level between 5 and 35 degrees Celsius and a humidity level between 20 and 90 percent. Our aim is to reduce the consumption of energy and cooling fluids by replacing air-conditioning systems with free cooling.

Energy savings

We are currently conducting a pilot project at five stations in the Netherlands where we have saving options implemented. Here you should think of replacing many lighting used by LED lights, the use of occupancy sensors and more efficient heating. One of the five stations that is part of the pilot, is station Dodewaard and the pictures below show the measures implemented at this station. The results are expected in early 2018. Then we can decide how we can use the results within TenneT.

Solar panels

On station Emmeloord Zuidervaart we are currently conducting a pilot project with solar panels. These solar panels have been installed to meet the energy needs of the station. For this project, SDE (Stimulation Sustainable Energy) has been granted. Solar panels at stations is new to TenneT and there are also quite a number of things that we need to investigate; what about maintenance? what will be the production? Is the roof a suitable place? Is this really the right way for greening?



TenneT is participating in two major European research programmes: PROMOTioN and MIGRATE. These programmes were initiated in response to new challenges related to the development of offshore power grids and the increasingly important role of solar and wind energy.

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North Sea Infrastructure

TenneT presents Hub and Spoke concept for large scale wind energy on the North Sea. 

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Offshore projects Germany

TenneT is investing heavily in Germany to connect offshore wind farms in the North Sea to the German high-voltage grid.

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