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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Flow-based methodology for CWE market coupling succesfully launched

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The Flow-Based methodology was successfully run for the first time in the CWE Day-Ahead market coupling process on 20 May (for delivery day 21 May). The CWE TSOs had jointly started the operational coordination process and the calculation of Flow-Based parameters already the day before.

Today’s launch of the new Flow-Based method marks a crucial milestone for European market integration and paves the way towards the completion of the European Internal Energy Market. Due to its innovative and dynamic nature, it allows for optimizing the capacity available for trading which in turn will translate into significant economic welfare gains.

Market Coupling optimizes the efficiency of power trading by allocating cross-border transmission capacity between the different coupled spot markets, while ensuring that the physical limits of the grid are respected. In so doing, market coupling narrows price spreads between national power markets and increases social welfare for the involved countries.

By using a more detailed grid description, taking into account the increased energy volatility resulting from the higher renewable production, Flow-Based is a more sophisticated method for capacity calculation. Compared to ATC-based methods, FB market coupling increases price convergence while ensuring the same security of supply as today.

The step to Flow-Based Market Coupling is essential in order to be prepared for accurate and secure capacity calculation in a European energy sector where further growth in renewables is to be expected. This method leads to a more efficient determination of commercial transactions and of resulting physical flows, helping the market participants to trade across borders and resulting in electricity prices that better reflect the actual grid situation. CWE Flow-Based Market Coupling provides a better representation of the actual grid situation and relevant information for proper price formation and, ultimately, investment decisions.

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Jeroen Brouwers

Media Relations

+31 (0)26 373 26 00


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