TenneT is a leading European grid operator. We are committed to providing a secure and reliable supply of electricity 24 hours a day, 365 days a year, while helping to drive the energy transition in our pursuit of a brighter energy future – more sustainable, reliable and affordable than ever before.

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In total, TenneT now operates offshore systems capable of transmit-ting 11,500 megawatts of wind power capacity. 

Offshore DolWin6 offizielle Übergabe

New record in the German North Sea: TenneT commissions DolWin6 and expands connection capacity to more than 8,000 Megawatt

TenneT awards a framework contract worth 1.9 billion euro for the con-struction and modernisation of substations

Ostküstenleitung Umspannwerk

TenneT invests 1.9 billion euros in substations

TenneT celebrates start of SuedLink’s construction with federal and state politicians on the Elbe River

SuedLink Baustart ElbX

TenneT: The energy transition is becoming a reality – Construction of SuedLink has begun

With effect from 1 September 2023, Maarten Camps and Kuldip Singh have been appointed by caretaker Finance Minister Sigrid Kaag as members of TenneT's Supervisory Board. Both were nominated by the Supervisory Board of TenneT Holding B.V.  

Maarten Camps and Kuldip Singh join Supervisory Board TenneT

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TenneT awards mega contract for high-voltage AC cables in the Netherlands and Germany to eight partners.

Netbeheerder TenneT heeft na een aanbestedingsprocedure een meerjarig contract gesloten (Corporate Framework Agreement) met een achttal contractpartners. Deze partijen leveren en installeren de komende jaren in opdracht van TenneT de wisselstroomkabels voor de 110, 150, 220 en 380 kV onshore hoogspanningsverbindingen in Duitsland en Nederland. 

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TenneT awards mega contract for high-voltage AC cables in the Netherlands and Germany to eight partners

In the first half of 2023, TenneT invested EUR 3.5 billion in grid expansion and replacement, almost double the amount for the same period last year. 

Half Year Report 2023

Half Year Report 2023 Cover high voltage station mannen

TenneT doubles investments while securing long-term suppliers for large-scale expansion of onshore and offshore electricity infrastructure 

Cooperation agreement with cable specialists Prysmian and N-Sea to ensuring secu-rity of supply in TenneT's offshore grid

Kabelverlegung Offshore

Security of supply in the North Sea: TenneT concludes  framework agreement with Prysmian in partnership with N-Sea for service and maintenance of offshore cable systems

Last Thursday, the 'revealing event' of TenneT's Open Innovation Programme took place. The three parties chosen from previous selection rounds presented their solution in front of the audience and a jury. 

Finale Open Innovatie Programma

Open Innovation Programme: N-SIDE new partner for TenneT

Last Wednesday, the Global Capital Awards were presented in London. After previous awards for our green financing, TenneT now won the Most Impressive Corporate Green, Social or Sustainable Bond Issuer Award for our green bond issues in 2022. We spoke to Gerard Kits, Head of Treasury about this award and the importance of our green financing programme. 

global capital award

TenneT wins Most Impressive Corporate Green, Social or Sustainable Bond Issuer Award

Earlier this year, TenneT announced its intention to explore the possibility of a full sale of its German activities to the German government on acceptable terms. Such potential transaction would enable the creation of two strong national players, controlled and funded by their respective governments, and cooperating in driving the energy transition.

Witterungsabhängige Freileitungsbetrieb

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TenneT has signed a EUR 8 billion Credit Facility to finance its increasing investments in the energy transition 

TenneT has signed multi-year framework agreements with Allseas and Heerema Marine Contractors for transport and installation of at least fourteen 2 gigawatt (2GW) offshore platforms. The fourteen 2GW converter stations will be installed in the Dutch and German parts of the North Sea. The framework agreement covers at least twenty-eight slots until 2031; fourteen slots for transport and installation of a jacket and fourteen slots for transport and installation of a topside. 

offshore wind farm

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TenneT awards transport and installation slots for 2GW offshore platforms to Allseas and Heerema

Award of framework cooperation agreement for 7,000 km of HVDC cable system.

TenneT Framework Cooperation Agreement Cable

TenneT accelerates grid expansion and energy transition

In 2024, the tariffs are expected to rise again by around 80%-90% for HV tariffs and 120%-135% for EHV tariffs. 

Stijging transporttarieven 2024

TenneT expects further increase in transmission tariffs in 2024

TenneT and National Grid have today  announced plans for a first-of-its-kind electricity link that will connect offshore wind between the Netherlands and the UK.  

Concept LionLink Impression

TenneT and National Grid collaborate on proposed first-of-a-kind Anglo-Dutch electricity link

Official signing of the contract between TenneT and four cooperation partners in Berlin to develop the North Sea as a hub for sustainable and independent European en-ergy production

2GW Program Framework-Cooperation-Agreement Signing Ceremony HVDC-Stations

Around €30 billion: Europe’s largest-ever contracting pack-age for security of supply, the energy transition and climate protection launched

With Target Grid, TenneT introduces a new approach designed to cope with the tremendous challenges of the energy transition. The objective is to have an electricity grid in place by 2045 for a flourishing, sustainable economy, always with enough green electricity for everyone, ranging from consumer to industry. The initial version of Target Grid, including the associated grid map for 2045, was presented to the Minister for Climate and Energy Policy, Rob Jetten, today.

Target Grid

TenneT presents Target Grid, its vision for the electricity grid of 2045

Innovative collaboration between TenneT and suppliers leads to new global market standard for 2 GW HVDC systems, reaffirming TenneT's position as a frontrunner in offshore grid development and fulfilling the shared ambition to develop the North Sea into Europe's green energy powerhouse

2GW Platform

Transmission capacity in the range of 22 power plants in the North Sea:  TenneT awards on- and offshore converter stations and HVDC technology with a total capacity of 22 gigawatts

Further grid expansion and acceleration mainly needed as of 2037

BorWin alpha beta

Transmission system operators publish first draft of grid development plan for 2037/2045

Record investment in onshore and offshore grids in 2022 with a workforce increase of 777 to 7,397 employees.

TenneT_IAR_2022_Cover

TenneT delivers record EUR 4.5 billion in grid expansion projects to enable integration of renewables and deliver on energy transition

NKT and Prysmian will install five 525 kV XLPE HVDC cable connections for Dutch 2 GW projects to be completed between 2028 and 2030

525 kV HVDC XPLE Cable system

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TenneT selects NKT and Prysmian for world’s largest offshore cable systems to connect increasing Dutch offshore wind volumes 

TenneT has selected Dura Vermeer, BAM Infra Nederland and Visser & Smit Bouw in a framework agreement for civil engineering works for the construction of the 2GW land stations in the Netherlands.


20230221 Contract 2GW Landstations

TenneT selects 3 parties for civil engineering works land stations Dutch 2GW projects

TenneT is operating an interconnected grid at the highest level of security of supply, while driving the energy transition forward. Over the recent years, TenneT has developed into the largest investor and operator of offshore wind transmission grids worldwide. The fast acceleration of the grid expansion, onshore and offshore, requires unprecedented capital investments by TenneT.

NordOstLink Header

TenneT explores potential sale of its German activities to the German State to deliver on the ambitious energy transition targets

TenneT is looking for solutions, concepts and ideas that can help combat congestion and further optimize the use of the electricity grid. To this end, the national grid operator is launching together with DSO’s in the Netherlands an Open Innovation Programme in which interested external parties can participate.  

Open Innovatie Programma 

TenneT looking for innovations to tackle grid congestion

Strong increase in offshore grid connection capacities in the Netherlands

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29 terawatt hours of wind yield in the Dutch and German North Sea in 2022

Today Dutch-German TSO TenneT, global technology leader Hitachi Energy, and international services company Petrofac, announce to  enter into early works agreements in support of TenneT’s 2GW Program. Under the terms of the agreements, the companies will begin preparatory work and detailed engineering to ensure timely delivery of the first two Dutch converter stations for TenneT’s high voltage direct current (HVDC) offshore wind grid expansion.

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TenneT, Hitachi Energy and Petrofac announce early works agreement for 2GW projects

TenneT Germany and TenneT Netherlands has again been rated highly by you in 2022, compared to two years ago, with 82% satisfaction. We are proud of this! 

customer satisfaction survey 2022

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Results of TenneT Customer Satisfaction Survey 2022

TenneT CEO Manon van Beek is featured in the Financial Times' article "Energy at the Intersection" - where she outlines TenneT's position on strategic partnerships to unlock the potential of the North Sea.

Offshore Konverterstation

Energy at the intersection - Financial Times

TenneT has started a nationwide search for companies willing to handle their supply and demand flexibly in return for a fee to relieve the electricity grid at busy times. To this end, the national grid operator has launched an ongoing market consultation. 

Ruimte op het net

20220525 Nieuws Ruimte op het net congestie zonnepanelen

TenneT seeks companies willing to relieve grid for a fee

TenneT has signed long-term contracts with those companies that will carry out work on the overhead high-voltage lines in the Netherlands. 

Communicatie EU-301 raamovereenkomst

Communicatie EU-301 raamovereenkomst Maarten Abbenhuis

TenneT selects three parties after tender

'What revenue and savings could my company generate in the energy markets if we take advantage of our opportunities to use electricity more flexibly?' TenneT has developed the Industrial ValueFlex Tool, which can be used to answer that very question. The tool is available free of charge to industrial wholesale electricity consumers.

Industrial area

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Is industry embarking on valuable flexibility? TenneT launches Industrial ValueFlex Tool

The pilot project will be realised in collaboration with Hitachi Energy. Natural gases will gradually replace greenhouse gas SF6.


SF6-Pilotprojekt Vertragsunterzeichnung 01

For climate protection: TenneT orders the world’s first SF6-free extra-high voltage switchgear

TenneT Holding B.V. (issuer ratings A3/A-, stable outlook) successfully launched and priced a senior Green Bond issue of EUR 3 billion on the 19th of October.

Green Bonds

Finance Market Green Bonds 2022.jpg

TenneT strengthens its status as the largest EUR corporate Green Debt issuer

The EIB has granted an investment loan of €450 million to upgrade TenneT’s electricity grid transporting energy in the north-east of Bavaria.  

News Luftaufnahme Ostbayernring

EIB shows strong commitment to TenneT’s grid expansion in Bavaria

TenneT and Statnett will take NorNed back into operation on 17 October after a repair and testing period. As part of the cable is still in degraded condition and cannot be repaired in the short term,  restrictions on how the interconnector can be operated will apply.

Interconnector NorNed

NorNed back in operation with adjusted operational conditions

Mainly as a result of high prices in the electricity market, TenneT's transmission tariffs will rise sharply in 2023. This is shown in TenneT's tariff proposal for 2023 published  today by the Authority for Consumers & Markets (ACM). TenneT's Annual Market Update 2021 describes, among other things, that electricity prices in Europe increased significantly from the second half of 2021. In the first quarter of 2022, these prices are about four times higher than in the first quarter of 2021. These price increases also affect the level of TenneT's transmission tariffs.

Onshore NL - Mast in landschap

Onshore NL - Mast in landschap - Tarievenbesluit

ACM publishes TenneT tariff proposal for 2023

Repair work on the Norned cable has been completed. The 580-kilometre high-voltage connection between Norway and the Netherlands is being prepared for return to operations in the coming weeks. The cable is now expected to return to regular operations on 17 October.

Eemshaven-Norned

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Norned update

•	Direct current cables for at least ten connection systems for wind energy transmission from sea to land in Germany and the Netherlands   
•	TenneT's 2 Gigawatt program increases and bundles electricity transmission capacities and reduces environmental impact 
•	Investment security, accelerated expansion and development of required resources and supply chains


2GW cables

Offshore cable 2GW

TenneT announces large scale HVDC cable tender for offshore grid connections in the North Sea

Following a 12-day installation, the offshore converter station is now in place 45 kilo-metres off the coast of Lower Saxony.

DolWin-kappa Installation

TenneT installs 900 MW DolWin kappa platform in the German North Sea

In the context of the European Electricity Regulation, part of the Clean Energy Package, the European Transmission System Operators (TSOs) for electricity have to conduct a common study into alternative bidding zone configurations, the so-called Bidding Zone Review.

Control Room of the Future

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Bidding Zone Review: TSOs investigate alternative bidding zone configurations

TenneT will soon be reliably bringing even more green wind power from the German North Sea to land via the direct current connection DolWin6. Europe’s leading offshore transmission system op-erator has now reached the next important milestone on its path to this objective: the sail-out of the 900 MW offshore platform DolWin kappa, which took place on 5 August 2022 from the Dragados Offshore shipyard in Cádiz, Spain.

DolWin-kappa Sailout

DolWin-kappa Sailout (1)

Sail-out completed: TenneT’s 900 MW offshore platform DolWin kappa leaves shipyard in Cádiz

In the first half of 2022 within a complex and unpredictable external environment TenneT continued its strong efforts to drive the energy transition, investing EUR 1.6 billion in the grid and once again maintaining a high grid availability of 99.999%. Underlying revenue increased by EUR 2,407 million to EUR 4,975 million. 

The cover of the TenneT Half Year Report 2022

Cover TenneT Half Year Report 2022

EUR 1.6 billion of grid investments for carbon neutral future amid strong focus on energy security

Celebrating a significant energy transition milestone at the Maasvlakte

Offshore net Hollandse Kust (zuid) Alpha en Beta klaar voor gebruik - Manon van Beek - opening HkZ

Offshore grid Hollandse Kust (zuid) Alpha and Beta ready for use

In the Esbjerg Declaration in May at the North Sea Energy Summit, Germany, the Netherlands, Denmark, and Belgium agreed to jointly install at least 65 gigawatts of offshore wind energy by 2030. Transmission system operator (TSO) TenneT will account for almost two-thirds of this with 40 gigawatts - 20 gigawatts each in the German and Dutch North Seas. Achieving these offshore targets requires a new tender approach to ensure that the supply chain is able to anticipate on necessary investments.

2GW Offshore platform

Large-scale offshore tender sets TenneT on course to deliver 2030 offshore expansion targets 

TenneT expects the ongoing congestion management studies to be completed as of September. The various studies are in full swing and extensive market consultations are currently taking place. The current studies take into account the latest insights from the new Grid Code, which was published by the ACM last week.

Wahle-Mecklar Bauabläufe Fertig gestockter und beseilter Donaumast

TenneT congestion studies update

Ørsted's Borkum Riffgrund 1 wind farm is the first German offshore wind farm whose produced electricity is fed into the German electricity grid of transmission system operator TenneT in a system-stabilising manner. Following the successful completion of a pre-qualification process, Borkum Riffgrund 1 demonstrates that balancing services can be offered and fed into the electricity grid.

The HelWin 1 offshore converter platform 

Offshore Platform HelWin 1 Converter Platform Germany

Ørsted offshore wind farm is the first to supply balancing capacity to German grid

REPowerEU package highlights need for exceptional measures in the current energy crisis 


Installation of the Hollandse Kust (zuid) Beta jacket

Offshore Platform Hollandse Kust Zuid Beta jacket installation

TenneT calls for acceleration of North Sea cross-border wind for European energy independence and security

TenneT successfully issued the largest corporate Green  Eurobond transaction ever. In volatile times TenneT’s strong financial profile assured a solid response from investors, with orderbooks touching the EUR 8bn mark after final terms, showing several triple digit orders and a well-diversified investor base. With the offering, TenneT reconfirms its status amongst the top 3 corporate issuers of green debt financing globally, with currently approximately EUR 16.7bn billion outstanding, issued across different formats (senior, hybrid, USPP and Schuldschein) during the last 7 years

TenneT reconfirms position as top Green Bond Issuer

TenneT and Siemens Energy confirm partnership at press briefing to mark next project milestone. TenneT COO Tim Meyerjürgens urges politicians to consistently accelerate grid expansion processes. 900 megawatt grid connection for the transmission of wind energy from sea to land.

The DolWin6 platform during sunset

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DolWin6: TenneT's offshore platform about to sail out

Contractor combination NRG (Denys, Alsema and Van Vulpen) will realise the link between the offshore cables for the wind farm Hollandse Kust (west Beta) and the transformer station in Wijk aan Zee for TenneT. NRG will install 2.5 km of high voltage underground cables from Velsen beach. This will be done by means of underground directional drilling, as used for the Hollandse Kust (north) and (west Alpha) projects.

Offshore Platform Hollandse Kust Zuid alpha being lifted into place

Offshore Platform Hollandse Kust Zuid alpha lifted into place

TenneT awards NRG contract for onshore cable connection of Hollandse Kust (West Beta) project

The national grid operator TenneT is looking for parties in Limburg and Brabant who can flexibly handle their electricity supply and demand. This exploration is part of a so-called congestion study that the grid operator is currently conducting in order to use the busy electricity grid in these two provinces even more intensively.



hoogspanningsverbinding tussen Borssele en Rilland

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TenneT in search of flexible power in Brabant and Limburg

Hollandse Kust (zuid) Alpha, TenneT’s high voltage connection for offshore wind farms Hollandse Kust (zuid) I and II is ready for use. TenneT completed the installation and energization of the offshore grid connection. Wind farm developer Vattenfall can now connect the wind turbines to the high voltage grid. On top of that, the Hollandse Kust (zuid) Beta topside was successfully installed this week.

Hollandse Kust Zuid (beta) Topside

Two significant milestones for offshore grid connection Hollandse Kust (zuid)

The installation of the second offshore transformer platform for the grid connection of wind farm Hollandse Kust (zuid) can be carried out as planned. TenneT has had investigations carried out on the jacket (substructure) that was damaged in January during storm Corrie by a collision with the adrift vessel Julietta D. 