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

Meet us

Gate instruction

All employees working in the Netherlands and Germany at TenneT high-voltage substations, line and cable connections or construction sites, as well as all visitors to such sites, must attend a so-called site safety instruction session where TenneT's safety rules are explained. Attendance is a prerequisite for admission to the site.

Prerequisite for admission

TenneT attaches great value to safety. We have therefore put in place specific rules that govern site admission and the performance of work at our operational high-voltage substations and construction sites and on our electricity connections. Attending a site safety instruction session is a prerequisite for admission at locations where TenneT is responsible for safety.

E-learning module

Apart from site specific instructions given on site, we have developed for the Netherlands and Germany e-learning modules for this purpose.

The gate instructions explain the general TenneT safety rules and rules of conduct. The instruction session must take place prior to departure to the site. Participants are required to watch an instructional video, followed by a test consisting of ten questions. Participants who have answered at least eight questions correctly receive a personal certificate. The certificate is valid for a period of one year. The certificate also includes proof of participation which can be cut out and pasted into the safety passport or uploaded in a digital safety passport (if the participant possesses such a passport). The employee or visitor must present the certificate or proof of participation to the TenneT representative upon entering the site.

PLEASE NOTE: On our provider's platform you will find two slightly different versions for Germany and the Netherlands. Please follow the corresponding link for the country in which you would like to enter one of our sites. If you require assistance, please call Helpdesk Explain: +31 (0) 33 450 47 48.

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E-learning NL

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E-learning DE

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Safety Leadership

Our safety performance must reflect our operational excellence. TenneT wants to be regarded as a safety leader, and we believe that all TenneT employees should assume the role of leaders by working safely themselves. We therefore invest in training programmes for our managers and employees.

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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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