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 22,500 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

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.

Read more

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.

Explore our company

We are TenneT

Meet us
News Market

Invitation for the supply electricity for substations in 2018 - 2020.

TenneT TSO B.V. has launched the process for contracting one supplier for the supply of electricity for substations of TenneT for the period 2018 - 2020. The tender is published on the TenderNed platform. For the actual tender, TenneT makes us of the Negometrix platform.

The average year consumption is estimated by TenneT on 20,7 GWh.

TenneT hereby invites potential suppliers of electricity for the substations in 2018 – 2020 to express their interest to Mr. M. van Swam, on (T) +31 26 373 2084, or (M) maarten.van.swam(at)tennet.eu.

Do you want to stay informed?

Like the

facebook page

Go to Facebook page