SeAH Wind factory starts production for inaugural project at huge Teesworks facility

Posted on 30 July 2025

SeAH Wind factory starts production for inaugural project at huge Teesworks facility
It is three years since ground was broken on the South Bank site

Work has started at SeAH Wind's new Teesside factory where it will produce the foundations for offshore wind turbines.

Staff at the huge Teessworks facility have started their inaugural project, which is producing monopile foundations for Ørsted’s Hornsea 3 Offshore Wind Farm, in the North Sea. A ceremony including the cutting of the first steel plates marked the milestone.

The cutting is the first step in the manufacturing process that involves high precision plate preparation, rolling, welding, non-destructive testing, coating and final assembly. Finished monopiles from the facility are key components in connecting offshore wind turbines to the seabed, and in some cases they will measure more than 100m long and weigh more than 2,000 tonnes.

Chris Sohn, CEO at SeAH Wind, said: “This is a monumental occasion for SeAH Wind. Three years ago this month, we broke ground on this site with a bold vision to become a leader in the offshore wind industry. To now reach the stage of starting commercial production is a testament to the incredible dedication, innovation, and hard work of our entire team.

"This milestone not only marks a significant step forward for the company, but also demonstrates the success of inward investment in the UK. We are proud to be creating skilled jobs, supporting local companies, and helping deliver the UK’s green energy transition.”

The SeAH factory currently employs about 300 people but once at full production capacity, that number is expected to rise to 750. Earlier this month, TeessideLive showed pictures from inside the 1.1 million sqft complex which the Korean-owned firm has been developing since 2022.

Between 800 to 1,000 people have been on site each day during its construction, with more than 90% of the workforce said to be from Teesside. Owing to the site's size, the start of production is expected to form three phases, with other parts of production set to start later this year.

The monopiles produced by SeAH are steel cylinders that will be pile-driven into the seabed, ready to support wind turbine generators. Those made at the factory will be for 14MW turbines and can be up to 15.5m in diameter - twice the diameter of the Channel Tunnel - and 120m long.

Once ready, the Hornsea 3 monopiles will be taken from the nearby Steel River deepwater quay and taken to the wind farm which lies 120 km off the Norfolk Coast in the North Sea and is set to become the world's largest wind farm once completed.

SeAH said the launch of the South Bank site reinforces the UK's position as a "global leader" in offshore wind.

Source: Teesside Live 

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