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

Information for wind farm developers

TenneT has officially been appointed as offshore grid operator in the Netherlands, and will develop -as contribution to the Energy Agreement- at least 3,500 MW of offshore-connections until 2023; all with a standardised concept of 700 MW per connection.

By means of the National Energy Agreement, the Dutch government wants to achieve a substantial increase in the share of wind energy in the Netherlands’ energy mix. To increase offshore wind energy capacity, the government has designated three zones in the North Sea for the development of new wind farms. 
With it's standardised offshore grid concept, TenneT will bring the offshore windenergy onshore, to a high voltage substation. From there, the national 380 kV high-voltage grid will distribute the wind energy to households across the country.

Development of the offshore grid concept 

Developing the offshore grid could not be done by TenneT single-handedly. Therefore, TenneT started an intensive stakeholder consultation process end of 2014 until end of 2015. The consultation focused on technical and planning issues concerning the design, construction and realisation of the offshore grid infrastructure until 2023. The overall goal of this process is to optimise, together with the stakeholders, the offshore grid configuration and realisation against minimum societal cost. All topics and supporting information can be accessed via the overview below.

Consulted topics


All consulted technical topics are to be found here.

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All consulted legal topics are to be found here.

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Planning and other

All consulted planning and other topics are to be found here.

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Questions received

Questions can be submitted via Netopzee(at)tennet.eu. TenneT can only engage in discussions to further clarify the process, or interpretation of items, directly related to the offshore model agreements. Download the latest version of the FAQ here.

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Expert meetings

Agenda en minutes of meetings

Expert meetings have been organized every month and attended by a selected group of expert and by invitation only. Two weeks prior to the meeting, the agenda and all relevant background information to the topics discussed are made available online. Background information may include: a document defining the scope (summary of content and considerations), one or more external reports, and a position paper (TenneT's position on the topic at hand). In order to have the expert meetings as efficient as possible, present stakeholders are expected to have read these papers and documentation. This will be the starting point of the consultation.

Expert meeting November 9, 2015
Joint concluding technical and legal meeting November 9
- Report of meeting November 9

Expert meeting October 21, 2015
Agenda Expert meeting 21 October 2015
- Presentation Expert meeting 21 October 2015
- Minutes of meeting 21 October 2015

Expert meeting September 24 2015
Agenda Expert meeting September 24 2015
- Minutes of meeting
- Blue Print - Technical topics v1

Expert meeting July 2 2015
Agenda Expert meeting July 2 2015
- Minutes of meeting
- Presentation: Offshore legal framework
- Presentation: Stakeholder engagement and Consultation Process OWFs

Expert meeting May 12 & 13 2015
- Minutes of meeting
- Presentation day 1
- Presentation day 2
- Agenda Expert meeting May 12 & 13

Expert meeting April 15 & 16 2015
- Minutes of meeting
- Offshore legal framework combined
- Presentation day 1
- Presentation day 2
- Agenda Expert meeting april 15 & 16

Expert meeting March 18 2015
- Minutes of meeting   
- Presentation by TenneT - Stakeholder engagement and Consultation Process
- Abstract of RfG code
- Agenda Expert meeting March 18

Expert Meeting 29 januari 2015
- Agenda and presentation by TenneT
- Presentation by DNV GL
- Minutes of meeting

Expert Meeting 27 november 2014
- Agenda
- Presentation by TenneT
- Minutes of meeting


Consultation process for offshore grid development (417 KB, pdf, 12/19/2016)

Category: Downloads Factsheet
Consultation process for offshore grid development Download Download
Connecting wind energy (3 MB, pdf, 11/23/2017)

The offshore grid in the Netherlands

Connecting wind energy Download Download
KCD Net op Zee (Dutch only) (2 MB, pdf, 12/06/2017)

KCD Net op Zee (Dutch only) Download Download


Net op Zee

We invite offshore windfarm developers to contact us via:

Service Center

0800 836 63 88

Jeroen Brouwers

Media Relations

+31 (0)26 373 26 00