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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News News

Successful Go-Live of German Balancing Energy Market

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Flexibility in the procurement of balancing energy has been increased in Germany by decoupling it from the procurement of balancing capacity. On November 2nd, the balancing energy market has gone live with first delivery on November 3rd. The balancing energy market enables transmission system operators (TSOs) to access additional balancing bids, increasing social welfare.

November 6, 2020. Bayreuth, Berlin, Dortmund, Stuttgart. The four German TSOs 50Hertz, Amprion, TenneT and TransnetBW announced: “By introducing the balancing energy market in Germany, we have made a large step on our way to the common balancing energy market in Europe.” Since November 2nd, 11 pm. balancing energy auctions are executed every four hours. Implementing a common balancing energy market in Europe is one goal of the guideline on electricity balancing (GL EB). In this guideline, European Commission has established rules for balancing which are adopted subsequently.

Balancing is a fundamental tool for stable operation of the power system. In daily operation, transmission system operators activate balancing reserves to balance the amount of electricity production and demand. This ensures that feed-in and withdrawal are balanced in the grid at any point in time.

More bids providing more flexibility

Key feature is the separate procurement of balancing capacity and balancing energy. Until now, both services have been procured day-ahead in a joint auction as six four-hour products. Now, balancing energy bids can be offered until one hour before begin of a four-hour product. All prequalified balancing service providers can participate in the balancing energy market, even if they have not participated in the balancing capacity market.

This change allows providers to change bid volumes and energy prices close to real-time. Thus, providing balancing services becomes more attractive for providers of flexibility as they can react on other marketing opportunities (such as the intraday market for schedules energy) on short notice on. Flexibility of storages or renewable energy sources also benefits from the new market design as the current state of charge or short-term forecast can be instantly used for portfolio optimization and balancing energy bids.

Fostering competition by introducing the balancing energy market will increase social welfare as the offered volume for balancing energy increases. Moreover, transmission system operators only pay the actual activated energy at the balancing energy market. Balancing service providers awarded at the balancing capacity market are remunerated for ensuring the availability of balancing energy to be activated, if requested.


50Hertz Transmission GmbH
Volker Kamm, T +49 30 5150 3417, M +49 172 3232759,

Amprion GmbH
Solveig Wright, T +49 231 5849 13785, M +49 1520 8204961,

TenneT TSO GmbH
Mathias Fischer, T +49 921 50740 4044, M +49 151 27657832,

TransnetBW GmbH
Alexander Schilling, T +49 711 2 18 58-3449 , M +49 170 8418612




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Mathias Fischer

Spokesperson Corporate Communications Germany, Grid expansion offshore/onshore, energy policy

+49 921 50740-4044


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