TenneT Completes 700 MW Grid Connection Programme as Dutch Offshore Grid Receives Readiness Certificate

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Dutch transmission system operator (TSO) TenneT has completed its 700 MW offshore grid connection programme with the grid readiness certification now in place for the Hollandse Kust West Beta connection, the company said on 28 October.

The certification marks the completion of the last three 700 MW Hollandse Kust offshore grid connections in the Dutch sector of the North Sea. Each installation links a designated offshore wind farm zone to the mainland electricity network, enabling the transfer of renewable power once the wind farms become operational.

TenneT said Hollandse Kust West Beta received its official grid readiness declaration after final testing and certification procedures were completed. The certificate confirms that the offshore grid connection is technically ready to transmit electricity and can be connected and commissioned once its designated offshore wind farm is at that stage.

The offshore grid will connect the OranjeWind wind farm, owned by RWE and TotalEnergies, to the Dutch national grid. The project will have an installed capacity of 795 MW and a grid connection capacity of 760 MW. The additional 35 MW is reserved to optimise connection efficiency, even when production is lower, according to the developers.

Construction on OranjeWind will start in 2026, with wind turbine installation work scheduled to start in early 2027 and wind farm commissioning expected to be fully completed by the end of that same year.