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.

To Offshore Outlook 2050
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

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Procurement procedures

When goods, services or projects exceed a certain threshold amount, we are obliged to tender according to European procurement procedures.

European tender procedure

When goods, services or projects exceed a certain threshold amount, we are obliged to tender according to European procurement procedures. In such instances we follow the provisions of the European Directive on Tendering Procedures in Utility Sectors and those of the Tendering Procedures (Special Sectors) Decree (in Dutch: Besluit Aanbestedingen Speciale Sectoren). We publish calls for tenders on the official EU tenders website. The relevant tendering procedure is described in the notice.

Limited submission procedure

If the value of a contract falls below the EU’s threshold amount, TenneT follows the so-called limited submission procedure. This means we apply our own purchasing policy.

The procedure for limited submission is as follows:

  1. TenneT issues a call for suppliers to qualify and consults its vendor base.
  2. Potential suppliers request information from the Procurement department.
  3. Interested parties send data to TenneT in order to qualify as a supplier.
  4. TenneT invites selected suppliers and those from its vendor base to make an offer.
  5. TenneT evaluates the offers and makes a selection.  
  6. In some situations, TenneT may directly invite a supplier to deliver a product or make an offer.


Tenders Electronic Daily

Link to platform


Procurement policy

When it comes to purchasing products and services, TenneT’s procurement policy is based on European laws and regulations, our own corporate policy and best practices in procurement management.

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Financial reports

TenneT publishes integrated reports, including financial statements and key figures, on an annual and semi-annual bases that give an insight into our financial and operational performance.

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Safety at TenneT

TenneT attaches great importance to safety. Every day we are aware of the risks associated with our activities. TenneT wants every employee to return home safely at the end of each working day.

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