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 around 24,500 kilometres of high-voltage lines, we cross borders and connect countries.

Explore our grid

Offshore Outlook 2050

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

To Offshore Outlook 2050
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 42 million people.

Explore our company

We are TenneT

Meet us

About international connections

TenneT seeks to be a key player in the North West European energy market. We continue to work closely with our European partners to further integrate the electricity market, thereby assuring a reliable and secure electricity supply at competitive prices. Connecting countries and regions creates an international chain of high-voltage grids that makes it easier, cheaper and more efficient to transmit electricity across borders and to more effectively balance international supply and demand.

Cross-border connections

We have, or are in the process of realising the following cross-border connections with our international partners: 

  • NorNed cable from the Netherlands to Norway (operational since 2008)
  • BritNed cable from the Netherlands to the United Kingdom (operational since 2011)
  • Interconnector linking Doetinchem in the Netherlands to Wesel in Germany (planned for 2017)
  • NordLink from Germany to Norway (commissioning 2020)
  • COBRAcable from the Netherlands to Denmark (commissioning 2019).

System improvements

Working together with its international partners, TenneT has completed or is currently realising the following system improvements:

  • Market coupling between Belgium, France and the Netherlands (2008)
  • Market coupling between Germany, Belgium, France and the Netherlands (2010)
  • Cross-border intraday trading (2011)
  • Intraday trading with Norway (March 2012) and the UK (May 2012)
  • European market coupling between Scandinavia, the UK and Northwest Europe (February 2014)
  • Multi-Regional Coupling (MRC): Coupling of the Northwest European and Southwest European day-ahead markets (May 2014). This MRC allows for further extension of the target model in Europe for one integrated price coupled European day-ahead market.

Related projects


This two-way 1,000 MW high-voltage connection has a length of 260 km and runs from the Isle of Grain (in Kent) to Maasvlakte (near Rotterdam). The operational and technical management of the cable is in the hands of BritNed Development Ltd, a joint venture of British energy company National Grid and TenneT subsidiary NLink International.

Read more


The Dutch and Norwegian electricity grids have been interconnected by the NorNed cable since 2008. The NorNed cable is 580 km long and has a capacity of 700 MW, making TenneT and our Norwegian counterpart Statnett the joint owners of the world’s longest subsea high-voltage direct current cable link.

Read more


The COBRAcable will have a capacity of approx. 700 MW, will be around 325 kilometres long, and will run from Eemshaven (the Netherlands) to Endrup (Denmark) via the German sector of the North Sea. Two onshore converter stations – one in the Netherlands and one in Denmark – are needed to connect the cable to the existing grids.

Read more