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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We are TenneT

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German market procedures

The area of "Market Processes" encompasses the development, establishment and implementation of processes and formats for standardised electronic exchange of large data volumes as necessary for compliance with legal and regulatory requirements. With standardised market processes, large data volumes can be efficiently exchanged between the market partners involved.

Safeguarding of the requirements for the market process by TenneT:

From very early on, TenneT recognised how important market process development is and will continue to be for the energy market as a whole. In its function as a transmission system operator, TenneT not only plays the role of a classic TSO; it also implements the standardised processes of a distribution system operator, meter point operator, supplier and balancing group manager. 

For this reason, a separate "Market Processes" organisational unit was established in 2011 to allow for the bundling of the associated broad range of topics into a single area.

In this regard, it is especially important to TenneT to focus not only on implementation of the requirements established largely by legislative and regulatory bodies but also to actively participate in shaping the processes. To make this possible, TenneT has participated since 2000 in the pertinent bodies of the national associations as well as in the Bundesverband der Energie- und Wasserwirtschaft e.V. (BDEW, German Association of Energy and Water Industries) and the organisation that authors technical rules for power grids in Germany (FNN). This work takes place in close and continuous contact with the competent authorities (including the Federal Network Agency) and ministries. 

Through regular exchanges with the transmission system operators at the national and international levels, including within the organisation "European Network of Transmission System Operators for Electricity" (ENSTO-E), TenneT can also bring these high-level insights into the development of market processes.

Processes / term definitions

The market rules for balancing group billing in the area of electricity (MaBiS)

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The market processes for generators (MPES)

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Market roles

  • BIKO: Balance Coordinator
  • VNB: Distribution System Operator
  • BKV: Balancing Group Manager
  • LF.: Supplier
  • ÜNB: Transmission System Operator
  • MSB: Meter Point Operator


  • WiM: Change processes in measurement
  • GPKE: Business processes for delivery of electricity to the customer
  • MPES: Market processes for generators
  • MaBiS: Market rules for balancing group billing in the area of electricity

Settlement types

  • BKA: Balancing group billing
  • KBKA: Corrective balancing group billing

Contact persons Balancing Processes

in the roles of balance coordinator (BIKO) and transmission system operator (ÜNB)

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Process-spanning information

Certificates of TenneT

The rules for secure exchange of EDIFACT transmission files can be found in the currently valid version at www.edi-energy.de under “Regelungen zum Übertragungsweg” [Provisions on transmission routes].

role GLN / BDEW-Nr. EDIFACT- / E-Mailadress Link to certificates

TenneT TSO GmbH

BIKO 4033872000027 biko@tennet.biz
VNB 4033872000010 vnb@tennet.biz
LF 4033872000041 lieferant@tennet.biz
ÜNB 4033872000058 uenb@tennet.biz
BKV 4033872000034 bkv@tennet.biz
MSB 4033872000065 vnb@tennet.biz

QuoVadis Root Certification Authority / QuoVadis Issuing CA G4

Root CA
Sub CA

Communication Data sheet

Data sheet (115 KB, pdf, 08/30/2019)

May 2019

Data sheet Download Download

Role models and principles of market communication

The role model was developed with the goal of simplifying communication between the market partners in the energy industry within the framework of electronic data exchange. To this end, roles were defined along with corresponding responsibilities, regions and objects as the basis for the process development.

The corresponding descriptions and application aids will be developed by the Bundesverband der Energie- und Wasserwirtschaft e.V. (BDEW, German Association of Energy and Water Industries), and current versions are published under the following link: