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 23,000 kilometres of high-voltage lines, we cross borders and connect countries.

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Grid maps

Maps of our onshore and offshore high-voltage grid.

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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 41 million people.

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CertiQ recognises GOs from Great Britain

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  • British GOs on the Dutch market for the first time
  • Recognition of British GOs subject to conditions
  • Importing and using British GOs takes time. GOs from AIB countries, however, can be imported and used directly.

Following a ruling by the provisional relief court of the Trade and Industry Appeals Tribunal in November 2018, requested by Eneco, CertiQ will recognise GOs (Guarantees of Origin) from Great Britain. These British certificates (REGOs) were not recognised by CertiQ before because Ofgem, the British equivalent of CertiQ, is not a member of the Association of Issuing Bodies (AIB).


CertiQ checks British GOs against Dutch law

GOs generated in AIB-affiliated countries are accepted by CertiQ  because this gives certainty that they comply with Dutch laws and legislation and (therefore) are sufficiently accurate, reliable and truthful. In the case of GOs generated in countries that are not affiliated with the AIB, this certainty is not clear beforehand. That is why CertiQ will check every individual batch of non-AIB GOs presented to find out if the nature and purport of the certificates in question are equal to those of the ones issued in the Netherlands, as required by law. This check takes time and effort. GOs from AIB countries, however, can be imported and used directly.

Conditions for recognition

CertiQ conducted this check for certificates from Great Britain. CertiQ will recognise these REGOs if they meet a number of conditions. Among other things, the REGOs cannot be more than 12 months old and they can only relate to electricity supplied to the grid. REGOs that are issued for the auxiliary use of a production installation cannot be accepted under Dutch laws and legislation. Furthermore, it must be unequivocally established that the REGOs in question have not already been used in Great Britain, for instance, in order to calculate the British residual mix. Also, British certificates cannot be traded any further, not abroad either.

The exact conditions for the recognition of British certificates can be found on the website of CertiQ.

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Jeroen Brouwers

Media Relations

+31 (0)26 373 26 00

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