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 24,500 kilometres of high-voltage lines, we cross borders and connect countries.

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Offshore Outlook 2050

Already by 2030, the originally planned capacity of 15 gigawatts of offshore wind energy will increase to 20 GW.

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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 42 million people.

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We are TenneT

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Learning from incidents

Everyone will agree that lessons can be learnt from accidents. But to do that, you first need to know what happened and why it happened. In short: an investigation needs to be conducted.

It is TenneT's policy to investigate incidents that have (or could have) led to severe injury, using the Tripod Beta method. Incidents with minor injuries, of the categories MTC (medical treatment case), RWC (restricted work case) and LWC (lost workday case) must also be investigated, but the choice of investigation method is free.

For contractors working for TenneT, the same rules apply. Apart from Tripod Beta however, they may use a different method. On this page, you can find a list of methods for incident investigation that are approved by TenneT. If you want to use another method still, please contact safety(at)tennet.eu so that we can review the method and, after consenting with it, add it to the list of approved investigation methods. You can find more information in the factsheet on this webpage.

TenneT has trained its SHE advisors in the use of the Tripod Beta method. We are always willing to help our suppliers with investigations using Tripod Beta. If you would like to increase your own organization’s expertise with regard to Tripod Beta, you can do this via one of the recognized training institutes in this field. 

A better understanding of the causes of an accident will allow us to take more effective measures. If we know the underlying causes, we can implement better strategies to prevent accidents in the future.


Factsheet incident investigation contractors (207 KB, pdf, 22/12/17)

Factsheet incident investigation contractors Download Download
Approved methods for SHE incident investigation (219 KB, pdf, 18/12/17)

Approved methods for SHE incident investigation Download Download
Tripod example (27 KB, pdf, 27/03/17)

Tripod example Download Download
Tripod example attachement (515 KB, jpg, 24/03/17)

Tripod example attachement Download Download

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SHE requirements

TenneT has incorporated safety requirements into the procurement process. Read about it here and download the requirements.

Contractor Management

Contractor management is a key element of our Safety Vision 2022. We want everyone working for TenneT to return home safely at the end of each day. TenneT wants to contract top safety performers to contribute to our projects. We are looking for contractors who take safety just as seriously as we do, and who apply the highest safety standards when performing their work.

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Life-Saving Rules

TenneT applies six Life-Saving Rules. These rules are intended to prevent fatal accidents, and are based on the safety standards applicable in the petrochemical industry and a careful analysis of past high-risk incidents at TenneT. TenneT employees or personnel working for our (sub)contractors should never feel pressured to risk their lives for the sake of the company. The six Life-Saving Rules empower employees to say 'No' and stop the work in any situation where a Rule applies.

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