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 24,500 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.

International cooperation

As a cross-border transmission system operator, TenneT is working intensively to connect and integrate the electricity markets at European level. This is because even higher interconnected electricity grids in Europe increase security of supply, lead to more electricity trading, curb the rise in electricity prices and promote the integration of renewable energies.

TenneT supports all activities and initiatives to closer link the electricity markets and aims to create a single European internal electricity market. To jointly achieve these goals, TenneT is therefore involved in the following international cooperations:


The European Network of Transmission System Operators for Electricity (ENTSO-E) is an association of 39 network operators from 35 countries that cooperate in all key areas of transmission system operation. ENTSO-E's remit includes the development and implementation of technical and market network codes, the coordination of 10-year European energy infrastructure plans, and the promotion of technical cooperation among network operators. As a member company of ENTSO-E, TenneT supports the development of an integrated energy market in Europe, contributes to a sustainable energy landscape and thus ensures that electricity in Europe remains affordable, sustainable and reliable.

Join Allocation office (JAO):

On June 24, 2015, the General Assemblies of CAO and CASC.EU, the two allocation bodies for cross-border transmission capacity, signed the merger agreement and created the Joint Allocation Office (JAO). This was an important milestone for the integration of the electricity market in the EU.

The JAO is a service company of 20 transmission system operators (TSOs) from 17 countries*. Its main task is to conduct annual, monthly and daily auctions of transmission rights on 27 European borders. In addition, the JAO acts as a safeguard (fallback) for European Market Coupling.

*) 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)


TenneT is part of a cooperation of transmission system operators to control network security (TSO Security Cooperation). This alliance consists of eleven European grid operators in Germany, Switzerland, Austria, Poland, the Czech Republic and the Netherlands. Together, they are responsible for the secure supply of electricity to about 170 million people in Europe. TSCnet is currently a so-called 'Regional Security Coordinator', but will soon assume the role of RCC, 'Regional Coordination Centre', enshrined in EU legislation.

Market coupling initiatives

TenneT has been an active supporter and driver in market integration through 'Market Coupling' since 2006. 

Market coupling initiatives

TenneT has been an active supporter and driver in market integration through 'Market Coupling' since 2006. 

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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