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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North Sea Wind Power Hub

Both international cooperation and innovation are necessary to achieve the climate and energy objectives of the Paris Climate Agreement efficiently and cost-effectively.

Internationally coordinated

According to TenneT’s long-term vision (up to 2050), for a cost-effective further roll-out of offshore wind energy, which is expected to take place on a large scale further away from the coast, it is essential to switch to an internationally coordinated roll-out of the offshore grid with wind power hubs, rather than individual national connections.

North Sea Wind Power Hub

In 2016 TenneT presented its vision for the North Sea Wind Power Hub, and took the initiative to set up a consortium. The consortium, which is jointly investigating the possibilities for this so-called North Sea Wind Power Hub, now has five partners: TenneT Nederland, TenneT Germany, the Danish grid operator Energinet, Gasunie and the Port of Rotterdam.<br />The consortium wants to facilitate the large-scale roll-out and integration of wind energy in the North Sea, far away from the coast. It is attempting to achieve this at the lowest possible cost to society, as part of the transition to sustainable energy sources.

Hub-and-Spoke concept

The vision of the North Sea Wind Power Hub consortium is based on an internationally coordinated roll-out of so-called ‘Hub-and-Spoke’ projects, where wind farms are connected to centrally located offshore hubs. The hubs are connected to the North Sea countries via cables or pipelines. For example, electricity markets and sectors (such as mobility and industry) will be interconnected, and wind energy will be integrated into the energy system smartly and cost-efficiently. The possible application of power-to-x, the conversion of electricity to another energy carrier, such as hydrogen, will also be considered.<br />Feasibility studies have shown that the Hub-and-Spoke concept proposed by the consortium is feasible both technically and economically. A wind energy hub of 10 to 15 gigawatts can be the first step in the development of one or more hubs to be connected to neighbouring countries. Given the enormous challenge of complying with the Paris Climate Agreement, the first hub is expected to be developed in the early 2030s.

Three design scenarios

The consortium investigated three possible design scenarios for the hubs, based on foundation types: artificial islands, caisson islands and platforms. The optimum foundation type depends on the location and size of the offshore wind cluster to be connected.

Hub-and-Spoke concept