SeAH Wind Picks Partners for Hornsea 3 Offshore Wind Project

March 6, 2025, by Adnan Memija

SeAH Wind has selected Mammoet, Glacier Energy, and Hutchinson Engineering as key subcontractors for the 2.9 GW Hornsea 3 offshore wind farm in the UK.

Seah wind Hornsea 3 — *Source: SeAH Wind*

With commercial production set to commence in the coming months, these subcontractors have been selected to provide support with operational and logistical services within the 120-acre site located on the South Bank of Teesworks.

SeAH Wind will be supplying the monopile foundations for the Hornsea 3 offshore wind farm, located approximately 120 kilometres off the Norfolk Coast in the North Sea.

Mammoet has been appointed to provide self-propelled modular transporters (SPMTs) within the SeAH Wind facility. The company’s scope includes the transportation of can/cone structures and completed monopiles.

Ørsted to Order UK-Made Monopiles for 2.4 GW Hornsea Three Offshore Wind Farm

Contracts & Tenders

Glacier Energy will conduct non-destructive testing (NDT) of welds throughout the manufacturing process. According to SeAH Wind, their NDT inspections will enhance the reliability and durability of the monopiles.

Hutchinson Engineering has been tasked with supplying secondary steel components for the Hornsea 3 project. SeAH Wind sought a UK-based company capable of delivering these complex parts in compliance with stringent Ørsted drawings and specifications, the company said.

The monopile foundations will be installed by Cadeler under a contract signed with Ørsted in 2023.

Ørsted was awarded a Contract for Difference (CfD) for Hornsea Three in July 2022, with the developer saying that with an installed capacity of 2.9 GW, Hornsea 3 was the largest single offshore wind farm in the world.

The project is expected to be completed by 2027.