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.

Read more
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


East coast line

About the project

A full 500 megawatts of renewable energy was fed into the electrical grid in Ostholstein in 2015. Calculations have shown that the share of renewable energy will rise in the coming years to roughly 1,500 megawatts. The grid infrastructure in eastern Schleswig-Holstein is not sufficient for this increasing energy load. The grid must therefore be urgently expanded. Accordingly, the Bundestag has confirmed the expansion of the east coast line from the district of Segeberg through Lübeck to the Göhl region in the current Federal Requirements Plan Act.

More information

See the

German language page

for detailed information on the east coast line

Read more


John Karl Herrmann


+49 (0)431 78028155

Related Pages

Offshore Projects Germany

Our Offshore Projects in Germany

Read more

Onshore projects Netherlands

Our Onshore projects Netherlands

Read more

International Connections

Our International Connections

Read more