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).
Our key tasks
Innovation
TenneT presents Hub and Spoke concept for large scale wind energy on the North Sea.
Read moreOur 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.
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 2050Electricity 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.
Transparency data
We provide transparency data on our operations on our Dutch and German transparency page and on ENTSO-E.
To transparency pagesE-Insights
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.
Company
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.
We are TenneT
Meet usCOBRAcable
Since 2019 the Danish and Dutch high-voltage grid are interconnected via a high-voltage direct current submarine cable, the COBRAcable. The interconnector has a capacity of 700 MW and is around 325 kilometres long.
Facts
Cable
- high-voltage direct current subsea cable
- 325 km long
- Capacity of 700 MW
Project
- Wind power
- Since 2019
- TenneT and Energinet
Videos
Interconnection between the Netherlands and Denmark
TenneT and Energinet, Danish electricity and gas grid operator, realised a high-voltage direct current submarine cable that interconnects the electricity grids of The Netherlands and Denmark. COBRAcable runs 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, convert alternating current into direct current. This is necessary to transport the electricity without major losses. The converters also convert direct current back into alternating current; the Dutch and Danish electricity grids operate on the basis of alternating current.
Wind
The Netherlands can import more sustainable electricity via this interconnector cable, mainly wind energy from Denmark. Ensuring security of supply is of great importance to Denmark. The cable makes Dutch capacity available on a structural basis for the Danish electricity grid, and vice versa.
Furthermore, the cable connection has been designed in such a way that it will be possible to connect an offshore wind farm at a later stage. In this way, the cable contributes to realizing a sustainable international energy landscape, an important goal of the European Union.
Trade
This interconnector enables for the first time a direct flow of electricity between the Danish and Dutch markets. The capacity will be made available to the long-term, day-ahead and intraday electricity market.
Contact
Service Center
Jeroen Brouwers
Media RelationsRelated projects
BritNed
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.
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NordLink
The exchange of power enabled by NordLink will increase security of supply for the German and Norwegian grid and will allow exchange of renewable energies, especially hydroelectric power and wind power, between both countries. In addition it will give more stable electricity prices on both sides and, further on, also will facilitate European market integration.
Read more
NorNed
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