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October 7, 2021

Aker Offshore Wind Plans to Deploy Scotland’s First Offshore Wind Underwater Substation

Credit; Aker Offshore Wind

Credit; Aker Offshore Wind

Norway-based firm Aker Offshore Wind plans to utilize Scotland’s first offshore wind underwater substation as part of its bids for major offshore wind farms.

"The multi-million subsea innovation would be developed, manufactured, and supplied in Scotland by Aker Solutions and provide major export opportunities for Scottish businesses," Aker Offshore Wind said.

Substations – which help move the energy created by wind turbines into homes and businesses – are traditionally installed above sea level but moving them down to the seabed brings several reliability and cost benefits, the company said.

For example, Aker Offshore Wind said, the seawater can be used as a natural cooling system, while reliability is increased through stable temperatures, fewer components, and no rotating parts. In addition, operational costs can decrease by less maintenance and reduced material use. the company added.

The project would be delivered as a part of the ScotWind licensing process, for which Aker Offshore Wind has teamed up with Ocean Winds to submit a series of floating bids which could deliver up to 6,000MW of energy in the Outer Moray Firth. OW and AOW would use steel-based semi-submersible floaters called ‘Windfloat’, developed by Principle Power Inc (PPI), which is majority-owned by AOW and OW.

"It would be by far the UK’s biggest wind energy development and power millions of homes with renewable energy," the company added.

Aker Solutions, a sister company of Aker Offshore Wind and a key supplier to UK wind projects, is a frontrunner in developing subsea substations and related power system designs. The company would support the delivery of substations from its Aberdeen facilities.Credit: Aker Offshore Wind



Sian Lloyd-Rees, managing director of Aker Offshore Wind UK, said: "This is a world-leading innovation that would be developed, manufactured and supplied in Scotland. Both the Aker group and Ocean Winds have the necessary heritage and experience to deliver this at scale. We know the benefit is there – it will revolutionize how energy is produced and present Scotland with the opportunity to export genuinely innovative technology to the rest of the world. “This technology would be supported by tens of millions of investment and work would start next year.

“It’s a proven technology that we are now using to ramp up the role of renewables in Scotland. Our vision is for the UK to become a global leader in floating offshore wind, contributing to our net zero mission with green energy at scale. Through innovation, we have the opportunity to implement new technology in the ScotWind leasing round, making Scotland and the UK a global leader in subsea solutions for floating offshore wind and exporting the technology around the world.”

Dan Finch, managing director of Ocean Winds UK, said: "Ocean Winds has worked at the cutting edge of technological innovation to deliver world-leading reductions in the cost of offshore wind energy generation at our Moray East project with innovations from foundation construction to turbine interconnection. 

“The development of subsea substations is another major step forward in terms of using world-leading energy technology from our partners, Aker.
“It will enable the construction of wind farms in areas of the seabed which are too deep for fixed substation foundations, therefore facilitating access to cost-effective sites worldwide, even in very deep waters.  

“By including this proposal in our Scotwind bid, we can position Scotland at the front of the world’s offshore wind market, with a new, innovative technology, offering the economic opportunities associated with a new product with global demand prospects. Our two groups bring together the considerable experience of working in the North Sea environment and delivering and operating offshore wind generation, giving us an unrivaled heritage from which to deliver innovation such as this at commercial scale.”

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