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

Meet us

Actually accessed tertiary control reserve until 2010/12/31

Positive tertiary control reserve access corresponds to the purchase of a positive tertiary control reserve (additional purchase of service) by TenneT TSO GmbH. Negative tertiary control reserve access corresponds to the purchase of a negative tertiary control reserve (additional delivery of service) by TenneT TSO GmbH.

The data is made available to the best of TenneT TSO GmbH's ability. transpower stromübertragungs gmbh accepts no liability with respect to this data. Claims cannot be asserted against this data, if it is not possible to determine or supply the data for technical reasons.

In special cases the transmission system operator may deviate from the merit order list (MOL) when requesting positive or negative tertiary control reserve. Deviations for requests by TenneT TSO GmbH during the previous 30 days are listed here.

TenneT TSO GmbH reserves the right to effect retroactive changes to the data if this is necessary for correction purposes.

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