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).

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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 around 23,500 kilometres of high-voltage lines, we cross borders and connect countries.

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Offshore Outlook 2050

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

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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.

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Transparency data

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

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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.

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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.

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We are TenneT

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International collaborations

TenneT works closely with other countries to connect European electricity networks for even greater security of supply, harmonise electricity prices and help shape the transition to renewable energy.

TenneT also cooperates on initiatives to couple electricity markets and create a single, integrated market in North West Europe. We are engaged in the following international collaborations: 


The European Network of Transmission System Operators for Electricity (ENTSO-E) is a collaboration of 41 transmission system operators (TSOs) from 34 countries who work together in a number of key areas. These include drafting technical and market-related network codes, coordinating plans to develop European infrastructure and promoting technical cooperation between TSOs. As a member of ENTSO-E, TenneT is helping to build a more integrated European electricity market, contributing to a sustainable energy landscape, and ensuring electricity in Europe is affordable, sustainable and secure.

Download TYNDPThe 2016 edition of the 10-year network development plan (TYNDP) builds on the 2014 edition and offers a view on what grid is needed where to achieve Europe's climate objectives by 2030.


On 24 June 2015 the General Assemblies of CAO and CASC.EU, the two regional allocation offices for cross border electricity transmission capacities, approved the merger agreement to create the Joint Allocation Office (JAO). This is a major milestone for facilitation of the internal electricity market in the European Union.

The JAO is a joint service company of twenty Transmission System Operators (TSOs) from seventeen countries*). It will mainly perform the yearly, monthly and daily auctions of transmission rights on 27 borders in Europe and act as a fall-back for the European Market Coupling.

After two years of careful and intensive preparation, the new allocation platform will be established on 1 September 2015 and initially perform auctions for the 2016 annual transmission rights. The JAO constitutes a merger of CAO Central Allocation Office GmbH located in Germany and CASC.EU S.A. located in Luxembourg.

*) 50Hertz (DE), Admie (GR), Amprion (DE), APG (AT), ČEPS (CZ), CREOS (LU), ELES (SI), ELIA (BE), EnerginetDK (DK), HOPS (HR), MAVIR (HU), PSE (PL), RTE (FR), SEPS (SK), Statnett (NO), Swissgrid (CH), TenneT (DE), TenneT (NL), Terna (IT), TransnetBW (DE)

TSO Security Cooperation 

TenneT is part of the TSO Security Cooperation, an alliance of 11 European grid operators in Germany, Switzerland, Austria, Poland, the Czech Republic and the Netherlands. Together, we are responsible for the secure supply of electricity to approximately 170 million people in Europe.

Security Service Centre

The Security Service Centre (SSC) is an international partnership between the Netherlands and Germany to secure the electricity supply on the Dutch and German high-voltage grids. TenneT works with German grid administrator Amprion to coordinate grid operation on both sides of the border, manage cross-border electricity flows, detect bottle necks in the grid and enhance the security of supply. The SSC is based in Germany. 

Market coupling initiatives

The Dutch, Belgian and French electricity exchanges (APX, Belpex and Powernet) have been linked since 2006 under the Trilateral Market Coupling initiative. In 2007, this was extended to include Germany and Luxembourg, integrating five electricity markets in Central Western Europe. This allows TSOs to share capacity across national borders, so excess electricity generated on one country can be used in another. It standardises electricity prices in the region, makes the wholesale market more competitive and enhances security of supply. In 2015 APX merged with EPEXSPOT.

For more information, see Market coupling


Grid operators

The electricity grid is installed, managed and maintained by the grid operators. The grid operators are also responsible for connecting customers to the electricity network without prejudice.

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Electricity traders

Traders buy and sell electricity at competitive prices, directly from producers, via energy suppliers or on the Amsterdam Power Exchange (APX).

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Metering companies

Every party that purchases electricity from the grid is responsible for measuring how much they take and disclosing this information to their grid operator.

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