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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

525 kV HVDC XPLE Cable system.jpg

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

offshore wind farm

offshore wind farm-3.jpg

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.

Über-Unterwasser_2GW Platform.jpg

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

customer satisfaction survey 2022.jpg

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

Stock image industry 1920x1279.jpg

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

Eemshaven-Norned.jpg

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

Control Room of the Future 1.jpg

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

Offshore Topside Platform DolWin6 kappa.jpg

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

Onshore hoogspanningsverbinding tussen Borssele en Rilland.jpg

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. 

Seen from top: the Sail Away of the Hollandse Kust (noord) platform

Offshore Platform Sail Away HKN Hollandse Kust Noord 

Installation of transformer platform can be carried out as planned

Boskalis has been awarded the Hollandse Kust West Beta export cable contract by TenneT, in consortium with Orient Cables (NBO). The contract scope comprises the installation of two 65-kilometer-long export cables that will connect the planned Hollandse Kust West Beta 700 MW offshore wind farm to TenneT’s onshore grid in the Netherlands. 

Offshore Project NL Hollandse Kust Zuid HKZ Zeekabel Aanlande

Offshore Project NL Hollandse Kust Zuid HKZ Zeekabel Aanlanden.jpg

TenneT awards Boskalis consortium Hollandse Kust West Beta export cabling contract

The European Organization of Transmission System Operators for Electricity (ENTSO-E)  gave the green light for supporting the electricity systems in Ukraine and Moldova. Following extensive safety, security and stability analyses, ENTSO-E, of which TenneT is also a member, has decided to provide emergency support to the Ukrainian and Moldovan power systems,  connecting it to the so-called 'synchronous' continental European electricity grids.

TenneT stands with Ukraine

Visual Oekraïne Ukraine ENTSO-E

Ukrainian and Moldovan electricity grids linked to European high-voltage grid

Investment of EUR 4 billion in European energy transition and system resilience in 2021
Solid financial performance with an underlying revenue of EUR 6.4 billion; EUR 4.25 billion of equity capital committed by Dutch government 
Looking ahead, growth must be responsible and smart, taking account of finite resources
Annual investment growing to a minimum of EUR 6 billion by 2025 

Annual report - Responsible growth

Annual Report 2021 Responsible Growth

TenneT speeds up growth to drive sustainable energy system

New offshore standard set by the 2GW Program will accelerate Europe’s energy transition / With a combined six gigawatts, BalWin1, BalWin2 and BalWin3 will meet 20 per cent of the expansion targets for offshore wind by 2030 set out in the coalition agreement of Germany's new federal government / The three projects in the German North Sea will supply around 7.5 million households with green offshore electricity

Platform at sea

TenneT invites tenders for sea and land stations of the first three German 2 gigawatt grid connections

Cooperation agreement concluded on joint electricity hub and extra-high volt-age DC-line / Innovative multi-terminal hub planned in Schleswig-Holstein at the North Sea coast / Integration of four gigawatts (GW) North Sea offshore wind power / Electricity transport via 200 km long underground DC cable

Multi-terminal hub in the Heide area (as of January 2022)

Heide Hub Transformer Station Grid converter offshore - TenneT and 50hertz jointly bring wind power from the North Sea into the extra-high voltage grid

50Hertz and TenneT to jointly bring wind power from the North Sea into the extra-high voltage grid for the first time

New consortium prevails: McDermott and GEIRI/C-EPRI win bid for converter stations at sea and on land / 980 megawatt grid connection - output of a large power plant / Record length of 190 kilometres of subsea cable

Offshore Platform BorWin6 (980MW) with its connection to land

Offshore Platform BorWin6 (980MW) connection to land Germany

TenneT awards land and sea station of grid connection project BorWin6 to international consortium

On Monday 31 January, due to storm Corrie a cargo ship was cast adrift in the area where TenneT is building two transformer platforms (Hollandse Kust Zuid Alpha and Beta) for the offshore grid connection of the wind farm Hollandse Kust Zuid, that is being built by Vattenfall.

Detailed view of the damage caused by the cargo ship to the Hollandse Kust Zuid Beta jacket

Damage to the Hollandse Kust Zuid Beta jacket due to adrift ship collision cargoship detail 3 offshore

 Update on damage to HKZ Beta platform jacket caused by collision with a cargo ship

On Monday 31 January, a cargo ship was cast adrift by storm Corrie in the area where TenneT is building two transformer platforms (Hollandse Kust Zuid Alpha and Beta) for the connection of the wind farm Hollandse Kust Zuid that is being built by Vattenfall. TenneT is currently working on the Hollandse Kust Zuid Alpha platform. Fortunately, the situation was safe for the 100 or so employees present and there was no need to evacuate.

Damage to the Hollandse Kust Zuid Beta jacket

Damage to the Hollandse Kust Zuid Beta jacket due to adrift ship collision cargoship 2 offshore

Ship adrift near TenneT platforms

North Sea wind is becoming increasingly important for the success of the energy transition. TenneT is building 16 more offshore grid connections by 2030, increasing transmission capacity to around 29 gigawatts in the German and Dutch North Seas.

Offshore platform Borssele Beta

Offshore platform Borssele Beta wind turbines August 2020.jpg

Offshore share of total wind energy yield increases despite low wind in first half of 2021

North Sea "wind harvest" becomes a stabilising factor in the low-wind year 2021 / TenneT welcomes plans of the Federal Minister of Economics to prioritise offshore expansion in the future in the German North Sea  

Offshore Platform BorWin Gamma auf See 

German offshore share of total wind energy yield rises to almost 18 percent in 2021 In the Netherlands, almost twice as much wind energy was  produced offshore as onshore  

A further reduction in the capacity of gas and coal-fired power plants will result in a greater interdependence among countries in Northwestern Europe to meet their security of supply requirements in the medium to long term (2025-2030). This will also create greater risks for the security of supply for the Netherlands. These are the findings of the report ‘Monitoring Security of Supply 2021’, an annual analysis by TenneT that is commissioned by the Dutch Ministry of Economic Affairs & Climate Policy. 

International dependency on security of electricity supply calls for more cross-border coordination 

Arina Freitag is the new Chief Financial Officer (CFO) of the European grid operator TenneT as if  1 January 2022. Arina was previously Managing Director of Flughafen Stuttgart GmbH. Freitag succeeds Otto Jager, who left the company at the end of 2021.

CFO Arina Freitag

CFO Arina Freitag july 2021.jpg

Arina Freitag starts as TenneT's new CFO 

The offshore transformer station of the Hollandse Kust (zuid) Alpha platform is successfully installed on the jacket in the North Sea, about 20 kilometers off the coast of The Hague, on Sunday December 26th 2021. The transformer station, also called topside, is one of the two topsides of the Hollandse Kust (zuid) offshore grid, which will connect the offshore wind farm area with the same name to the Dutch onshore high-voltage grid. 

Hollandse Kust (zuid) Alpha topside installed at the North Sea

TenneT will anticipate the new Electricity Grid Code in its ongoing congestion management studies. This will offer more possibilities to meet connection requests. These congestion studies will be completed as from Q1 2022.

Progress of TenneT congestion management studies

·       2 GW standard essential to meet increased Dutch and German 2030 offshore targets 
·       TenneT starts tender of 525 kV DC offshore cable system for Dutch IJmuiden Ver projects
·       Market parties and TenneT set new global offshore standard, first connection operational in 2028

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