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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How much of an average household's energy bill consists of the tariffs of the high-voltage grid? How are the tariffs that TenneT may charge its customers determined?

As a transmission system operator (TSO), it is TenneT’s task to transport electricity over the power grid at the (extra-)high voltage level and to ensure its availability around the clock. For this service TenneT charges fees to its customers. Companies with a connection to the high-voltage grid are for example distribution system operators (DSOs) that maintain and operate the medium and low voltage grids or large factories that very intensively use electricity for their production. These customers cannot choose to which TSO they will be connected: TSOs are so-called natural monopolies. The high level of construction and maintenance costs for the grid imply that it is not feasible economically to have multiple suppliers in a certain area. Hence, there will only be one TSO in each geographocal part of the country. As a monopolist, everything TenneT does to fulfill its tasks is overseen by state authorities. The idea is to protect customers from potential abusive behavior of the monopolist. The relevant regulatory authorities for TenneT are Autoriteit Consument & Markt (ACM) in the Netherlands and Bundesnetzagentur (BNetzA) in Germany, which set the revenues TenneT is allowed to earn based on the rules set out in the legal framework.

The DSOs, TenneT’s largest customers, who operate the medium and low-voltage grids, pass on the costs of using the high-voltage grid to their own customers. For example, end users of electricity, such as households, pay for the maintenance of TenneT's high-voltage network via their energy bills.

This e-insight module shows and explains how the tariff system works in the Netherlands and Germany. How much of an average household's energy bill consists of the tariffs of the high-voltage grid? How are the tariffs determined that TenneT charges to its customers?

And how does the system ensure that TenneT receives “the right amount of money” to keep the high-voltage grid safe and reliable? Because the system differs in the Netherlands and Germany, the following pages are divided by country.

Dutch regulation

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German regulation

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