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 22,500 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. 


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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

Contractor Management

Contractor management is a key element of our Safety Vision 2018. 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.

We have decided to integrate safety in our procurement process. Safety is a key consideration in the selection of our contractors and the assessment of their performance. We regard our contractors as our “partners in safety”.

TenneT expects contractors to discuss safety in their own organization, adopt a proactive attitude in improving safety performance throughout the supply chain, and encouraging subcontractors to also optimize their safety performance. We want to engage in an ongoing dialogue with our contractors about learning from experience and pursuing continuous improvement. We strive for a safer working environment for all, with zero accidents.



TenneT Safety newsletter Q2 2018 (3 MB, pdf, 07/12/2018)

TenneT Safety newsletter Q2 2018 Download Download
TenneT Safety newsletter Q1 2018 (873 KB, pdf, 04/19/2018)

TenneT Safety newsletter Q1 2018 Download Download
Contractor Safety newsletter Q4 2017 (928 KB, PDF, 12/19/2017)

Contractor Safety newsletter Q4 2017 Download Download
Contractor Safety newsletter Q3 2017 (818 KB, pdf, 10/17/2017)

Contractor Safety newsletter Q3 2017 Download Download
Contractor Safety newsletter Q2 2017 (1 MB, pdf, 07/17/2017)

Contractor Safety newsletter Q2 2017 Download Download
Contractor Safety newsletter Q1 2017 (2 MB, pdf, 03/27/2017)

Contractor Safety newsletter Q1 2017 Download Download
Contractor Safety newsletter Q4 2016 (8 MB, pdf, 12/23/2016)

Contractor Safety newsletter Q4 2016 Download Download


SHE requirements

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

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Safety Culture Ladder

A way to increase safety awareness and safety culture is to make use of the Safety Culture Ladder (SCL). The Safety culture ladder is a requirement in the selection phase as described in the 'Safety by Contractor Management' program.

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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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