Tennet News


PALFINGER to Supply Cranes for North Sea HVDC Platforms

May 20, 2026

PALFINGER has secured a contract to supply davit cranes for five offshore converter platforms in the North Sea, expanding its presence in the offshore wind market as Europe accelerates grid infrastructure development tied to renewable energy projects…

TenneT Set to Start Beach Directional Drilling for Offshore Wind Farm Links

Apr 30, 2026

Dutch grid operator TenneT is preparing to begin horizontal directional drilling at Maasvlakte as part of efforts to connect three offshore wind farms to the onshore grid.Steel casing pipes have been installed at three beach work sites, allowing drilling beneath the beach and seabed to begin…

Construction Starts on Nederwiek 2 Offshore Wind Grid Platform

Feb 06, 2026

Seatrium, GE Vernova and transmission system operator TenneT have marked the strike steel for the Nederwiek 2 offshore platform, the third platform under TenneT’s 2 GW offshore wind grid program.The start of construction was marked by parallel…

Mammoet to Handle Substation Load-Outs for TenneT 2GW Program

Feb 04, 2026

Heavy-lifting and transport specialist Mammoet has signed a support contract with Seatrium to carry out the load-out of three offshore substations for TenneT’s 2 GW offshore grid connection program in the North Sea.Under the agreement, Mammoet…

Seatrium and Aibel Seek Arbitration to Resolve DolWin 5 Disputes

Jan 22, 2026

Seatrium, through its wholly owned subsidiary Seatrium New Energy (SNE), and consortium partner Aibel have started arbitration proceedings for the disputes related to the delivery of TenneT’s DolWin 5 offshore converter platform project in Germany’s North Sea…

Jan De Nul Wraps Up Cable Installation Job for TenneT’s DolWin Platform

Dec 15, 2025

Belgian offshore contractor Jan De Nul has concluded the 2025 transport and installation campaign of three HVAC grid connection cables at TenneT’s DolWin kappa platform.When finalized, these cables will ensure the transport of almost 660 MW renewable electricity from two offshore wind farms…

GE Vernova, Seatrium Ink TenneT Deal for 2.2GW North Sea Grid Link

Dec 11, 2025

A consortium of GE Vernova and Singapore’s Seatrium has secured a major contract from Dutch-German grid operator TenneT to deliver the BalWin5 offshore grid connection, a 2.2 GW high-voltage direct current (HVDC) transmission system designed…

L&T Joins Hitachi Energy to Support TenneT’s 2GW Offshore Wind Grid Scheme

Oct 30, 2025

India’s EPC contractor Larsen & Toubro (L&T) has been hired to deliver High Voltage Direct Current (HVDC) converters in support of the Dutch-German transmission system operator (TSO) TenneT’s 2GW offshore wind grid program in the North Sea.Collaborating with Hitachi Energy…

TenneT Completes Grid Connections for Hollandse Kust (West Beta)

Oct 28, 2025

Grid operator TenneT has completed the standardized 700MW grid connections for the Hollandse Kust (West Beta) offshore wind farm and has received the grid readiness certificate from DNV.The project was completed five months ahead of schedule…

Petrofac Goes into Administration after TenneT’s OW Contract Termination

Oct 27, 2025

Provider of services to the global energy industry Petrofac has filed for administration to the High Court of England and Wales to appoint administrators for the company, following TenneT’s decision to terminate its scope in 2 GW offshore wind grid project in the Netherlands…

Fugro Concludes Site Investigations for TenneT’s Offshore Grid Links

Oct 21, 2025

Dutch geological data specialist Fugro has completed land and marine site investigations for transmission system operator (TSO) TenneT Germany, to support the development of the LanWin1 and LanWin2 offshore grid connection projects.These projects are part of TenneT Germany’s 2 GW program…

Glamox to Light Up Tennet’s Offshore Wind Power Converter Platforms

Sep 22, 2025

Lighting specialist Glamox has secured contracts from electrical contractors working for three yards to provide connected marine lighting and light management systems for 11 offshore High Voltage Direct Current (HVDC) converter platforms.The…

NKT Installs Cables for TenneT’s BorWin5 Offshore Grid Connection

Aug 28, 2025

Danish power cable maker and services provider NKT has installed the HVDC power cable system for Tennet’s BorWin5 offshore grid connection in Germany.NKT said it completed the installation of the 320 kV HVDC system, completing the pull-in works…

TenneT Hires Asso.subsea for Cabling Work off Germany

Jul 29, 2025

Subsea cable services company Asso.subsea has secured the nearshore cable installation contract for three key projects under TenneT’s 2 GW grid program, including BalWin4, LanWin1, and LanWin5.The projects are located off the northwestern coast of Baltrum Island…

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