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 over 22,000 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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Facts & figures

Our most important facts and figures (Annual Report 2016). Explore TenneT at a glance.


In April, TenneT signed the Green Deal Infranatuur, underlining our commitment to biodiversity in the Netherlands. As a signatory to this deal, we are committed to sharing our experience and knowledge, with the aim of reducing the impact of the Dutch grid infrastructure on biodiversity.


TenneT's ambition on safety performance was under pressure in 2016 with the occurrence of a fatal accident with one of our contractors and increase of our Lost Time Incidents Frequency (LTIF) rate. We deeply regret this and are committed to stepping up our efforts of becoming a safety leader. The introduction of Life Saving Rules for our employees and contractors is one of the measures we have taken towards strengthening safety awareness and improving our safety culture.


TenneT was appointed as developer and operator of offshore grid connections in the Dutch part of the North Sea. Looking ahead, in June TenneT presented its long-term vision for developing a large-scale energy system in the North Sea to further support the transition of the North West European (NWE) energy market towards achieving the 2050 global warming reduction targets. At the heart of TenneT’s vision is the construction of an artificial island in the middle of the North Sea that will connect remote wind energy to a variety of European consumers.


In order to finance TenneT's significant capital-investment programme, we successfully completed a EUR 500 million green Schuldschein issue in May and, additionally, issued a total of EUR 1.5 billion of green bonds in 2016. Furthermore, TenneT’s shareholder, the Dutch State represented by the Ministry of Finance, committed to contributing up to EUR 1,190 million of additional equity capital over the 2017-2020 period.


Grid availability in both the Netherlands and Germany was maintained at high levels throughout 2016. TenneT made great efforts to the open and transparent public consultations on new projects, such as the Suedlink and SuedOstLink power lines in Germany. Following the German parliament’s decision to go for underground cabling, TenneT has been drawing up new power line corridors for SuedLink, making it the longest underground power line ever constructed and operated. In the Netherlands, the updated routing document for the eastern part of South-West 380 kV was well received, allowing next steps to be taken in 2017.


Mission, vision, values

We strive to ensure a reliable and uninterrupted supply of electricity in our high-voltage grid for some 41 million people. In doing so, we make every effort to meet our stakeholders' needs by being responsible, engaged and connected.

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We are passionate about our business and aim to deliver the maximum benefit for society in the most financially viable way for our broad range of stakeholders. 

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Our story

TenneT: Over 15 years of safe and reliable electricity.

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