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 2030

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

To Offshore 2030
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. 

To transparency pages

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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Financial equilibrium

The financial equilibrium of TenneT TSO GmbH is reflecting the relevant efforts for the establishment of a balanced current account and the proceeds from the re-charging of the provided balancing energy to the balancing group managers.

With the following table, the financial equilibrium of TenneT TSO GmbH is depicted, reflecting the relevant efforts for the establishment of a balanced current account and the proceeds from the re-charging of the provided balancing energy to the balancing group managers. It does not contain expenses for balancing power financed through the grid charges.The given values (in €) represent the monthly costs for the balancing energy used by the TSOs to balance the balancing groups, the monthly revenues from the corresponding balancing group billing, the transfer of revenues for reducing the grid charges, as well as the offsetting with the delta account. The transfer of revenues ensues as of 01.12.2012, in accordance with the Resolution BK6 -12-024  of the Federal Network Agency, and the document "Model for calculating the reBAP as of 01.12.2012“ provides a detailed explanation of this. The delta account takes into consideration a correction amount from the past which, e.g. results from subsequent claims from balancing energy suppliers and which could not yet be clarified at the time of reBAP publication.

The balance results from:

  • Costs for balancing energy
  • Revenues from the balancing group billing
  • Transfer of revenues for NNI reduction
  • Offsetting with the delta account

The values are supplemented monthly with a time offset of three months.



Month Costs for balancing energy [EUR] Proceeds OPEX accounting
Transfer of revenues for NNI reduction[EUR]Offsetting with delta account
January 5.681.018,06 5.811.321,27 9.353,03-120.950,170,00
February 5.460.764,45 5.470.104,27 9.339,820,000,00
March 8.454.079,348.508.100,4454.021,100,000,00
April 12.206.422,4712.568.681,71362.259,240,000,00
May 5.359.412,415.367.903,988.491,580,000,00
June 5.776.245,366.003.887,16227.641,810,000,00
July 3.714.146,784.065.791,76351.644,990,000,00
August 388.823,09660.707,27271.884,180,000,00
September -1.787.051,43-364.404,731.422.646,700,000,00
October -491.792,95-173.034,97318.757,990,000,00
November 5.445.514,596.142.207,82696.693,240,000,00
Dezember 3.203.099,883.608.910,49405.810,610,000,00


Archive Financial equilibrium

Years 2011-2019