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

Meet us

Transaction data exchange

Overview of data status and the impact of test reports

Data status Possible in which timeframe?Billing-
relevant version?
Change in data status due to positive test report? Receipt of the possitive test report, at latest by 
Testdata 11th working day -
29th working day
No Yes* 29th working day
KBKA test data 5th month -
7th month
No Yes* End of the  7th month
Billing data <= 10th working day
>10th working day (not until immediately after a possitive test by the BKV)
Yes No
29th working day
KBKA billing data 30th working day - 4th month 
> 4th month (not until after a possitive test by the BKV)
Yes No
7th month
Invoiced data On the 42nd working day Yes No -
Invoiced KBKA data End of the 8th month Yes No -

*= even if a negative test report is received from the BKV

Important note: The BIKO must forward the received MSCONS of the DSO to the BKV within 1 working day. Therefore, it should be assumed that data that was sent on the last working day of the data stop date may not be able to be considered due to run times on servers, etc.

For EEG invoices, beginning on 01-04-2012, the processes for EEG transmission time series must be taken into consideration.

If you have questions about test status, we are available to answer them at bkv(at)tennet.eu or by telephone at +49 (0)921 50740-4490.