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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BKV TenneT - market role of DSO

Overview of market processes

Challenges of the distribution system operator (DSO) with regard to the balancing group manager (BKV)

Data is transmitted by the DSO to the BKV, erroneous balancing data is clarified and corrected and possible corrected balancing group invoices are settled on a contractual basis. The exchange of master data then takes place on this basis.

In the context of the transmission of the balancing group time series totals by the DSO, the BKV is obligated to perform an examination using a test report. If there is a positive test report, the DSO is informed that the data is accepted. If there is a negative test status, the DSO is informed of the need for a clearing process or the possibility of transmitting a new version.

Data transmitted by the DSO by the 10th working day after the delivery month for balancing group billing and by the end of the 4th month after the delivery month for the corrected balancing group invoice is managed by the BIKO as billing data. Data transmitted by the DSO after the 10th working day and by the 29th working day for balancing group billing and by the 7th month after the delivery month for corrected balancing group billing can only be accepted as billing data if a positive test report is also promptly sent by the BKV. If balancing errors are not identified until after the corrected balancing group invoice is issued, financial settlement between the DSO and BKV is conducted on the basis of compensation energy prices in the manner described in the applicable allocation agreement.

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Master data exchange

TenneT BKV - DSO

Transaction data exchange

TenneT BKV - DSO

PKI certificate supplier (2 KB, cer, 08/07/2018)

PKI certificate supplier Download Download
PKI certificate DSO (1 KB, cer, 08/07/2018)

PKI certificate DSO Download Download
Presentation (320 KB, pdf, 07/10/2016)

“Master data exchange with DSO and BKV”.

Presentation Download Download


For further questions please contact

TenneT BKV Team

+49 (0)921 50740-4488