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).


Explore our key tasks


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 over 22,000 kilometres of high-voltage lines, we cross borders and connect countries.

Explore our grid

Grid maps

Maps of our onshore and offshore high-voltage grid.

To grid maps
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.

Explore the electricity market

Transparency data

We provide transparency data on our operations on our Dutch and German transparency page and on ENTSO-E. 

To transparency pages

Ganderkesee-St. Hülfe

TenneT is planning a new 380 kV line between the Ganderkesee and St. Hülfe bei Diepholz transformer substations

About the project

On March 31, 2016, the Lower Saxony road construction and transportation authority (NLStBV) issued planning approval for the project. The new line is 61 kilometres long, according to the planning approval. Roughly 18 kilometres of this consist of a total of four underground cable sections. The approved line will close an important gap in the electricity grid between the Ems and the Elbe.

More information

See the

German language page

for detailed information on Ganderkesee-St. Hülfe

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Inga Wilken


+49 (0)421 644702 -14