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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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Innovation

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 23,000 kilometres of high-voltage lines, we cross borders and connect countries.

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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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We provide transparency data on our operations on our Dutch and German transparency page and on ENTSO-E. 

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E-Insights

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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E-Insights

Facts & figures related to TenneT facilitating the market can be found here.

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Company

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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News Dutch Project

TenneT signs agreements for power transformers and GIS for Dutch offshore platforms

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First framework agreements for infrastructure Dutch offshore wind farms

TenneT has signed framework agreements for the future supply of Gas Insulated Switchgear (GIS) and power transformers for the offshore power grid. This equipment will form the 'heart' of five offshore platforms that will transmit the power from five new wind locations to the high voltage grid on land. The transformers will be supplied by CG Power Systems Belgium and the GIS by Alstom Grid Netherlands, which is a subsidiary of Grid Solutions, a GE and Alstom joint venture.

Standardisation

Marco Kuijpers, senior manager for Offshore NL at TenneT: ‘The power transformers and the GIS are the heart of our platforms, and they are the first parts we buy for the offshore grid. With the framework agreement in place for all platforms, we have taken a major step towards standardisation. As a result, we have the same equipment on every platform, we can optimise the size of the platform and we can, for example, save on maintenance and spare parts’.

Jean-Michel Aubertin, President of CG Power Systems stated: ‘We are delighted to stand next to TenneT and support their innovative approach in the offshore wind industry. CG being selected on their ability to propose the most optimized solution and their recognized offshore experience is a perfect reward to the efforts we are constantly putting to develop innovative solutions matching Total Cost of Ownership requirements.’

Jean Nakache, Grid Solution's General Manager Gas Insulated Substations says: ‘The transmission of affordable offshore wind energy in the Netherlands is an important step to meet the country’s renewable energy targets. It is an honor to be a part of such a significant project, bringing clean energy to the Dutch people'

European tender

TenneT has been designated as the Dutch offshore grid operator, developing the offshore grid. 3,500 megawatts of new offshore wind energy are to be connected to the onshore high voltage grid before 2023. This will be done at the lowest possible cost and with minimal impact on the environment. It includes the construction of five offshore platforms - two for the Borssele wind farm area, two for the Dutch Coast South wind farm area and one for the Dutch Coast North wind farm area. Each platform is equipped with two 230/66/66 kV /400 MVA power transformers, one 66 kV GIS and one 230 kV GIS. The first two power transformers and GIS systems will be in operation after the summer of 2019, on the Borssele Alpha platform.


TenneT's first framework agreements for the Dutch offshore grid: 440 MVA power transformers from CG Power Systems Belgium, 66kV and 220 kV GIS from GE's Grid Solutions.

For this equipment (GIS systems and transformers) TenneT has qualification systems. This means that only qualified parties were invited to participate in these tenders.

Do you want to know more?

Jeroen Brouwers

Media Relations

+31 (0)26 373 26 00
press@tennet.eu

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