TenneT has entered into multi-year framework agreements with Allseas and Heerema Marine Contractors for the transportation and installation of a minimum of fourteen 2GW offshore platforms.
These converter stations, each with a capacity of 2GW, will be installed in the Dutch and German sectors of the North Sea.
Under the framework agreement, a total of twenty-eight slots have been allocated until 2031. Fourteen slots are designated for the transportation and installation of jackets, while the remaining fourteen slots are for the transportation and installation of topsides.
Heerema will utilize the Semi-Submersible Crane Vessel (SSCV) Sleipnir, along with their own floatover barge. Allseas, on the other hand, will employ their single-lift installation vessel, Pioneering Spirit, for the installation of the jackets and topsides.
These vessels have been previously utilized by TenneT for the installation of jackets and topsides in the Dutch and German sectors of the North Sea.
TenneT has awarded approximately 60% of the available slots to Heerema, while Allseas has been granted approximately 40% of the slots, according to the company.
The awarded contracts also have the provision to include slots for future projects beyond 2031.
It's important to note that the awarded slots are not specifically tied to any particular 2GW projects.
The HVDC suppliers responsible for constructing the jackets and topsides for TenneT, such as Hitachi Energy/Petrofac, GE/Sembcorp, GE/McDermott, and Siemens/Dragados, can select from the suppliers, with both Heerema and Allseas available to install the jackets and topsides.
Boskalis will act as a subcontractor to Allseas and will construct one or two new transport vessels specifically tailored for the 2GW Program. These vessels will adhere to the most stringent future legislation standards regarding sustainability and emissions.
Tim Meyerjürgens, TenneT's Chief Operating Officer, expressed satisfaction with the agreement, stating, “With this agreement, we ensure global marine transport and access to the most powerful offshore installation capacity in the market for our HVDC partners, while also expanding transport capacity within the market.”
Meyerjürgens added, “We are proud to have signed these framework agreements with our Dutch and Swiss-Dutch suppliers. Once again, our European partners demonstrate their leadership in offshore transport and installation. They possess the necessary equipment to carry out such large-scale projects safely and successfully.”
Recently, TenneT also awarded framework agreements for the civil works related to the land stations in the Netherlands, offshore and onshore converter stations, and the cable connections for the fourteen 2GW projects in the Netherlands and Germany.
