Aker Solutions delivers record-breaking offshore HVDC station for East Anglia THREE
October 29, 2025The 10,700-tonne, seven-storey HVDC topside—heavier than the Eiffel Tower and taller than the Statue of Liberty—was safely installed last week, 69 kilometers off the Suffolk coast of England. This achievement underscores Aker Solutions’ ability to execute complex, large-scale energy projects and deliver innovative solutions for the renewable sector.
Engineering excellence and global collaboration
The HVDC station will convert electricity from the windfarm’s 95 turbines, turning high voltage alternating current (AC) into direct current (DC), enabling efficient transmission over long distances.
Efficient transport of wind power to shore is a key enabler in the energy transition. Aker Solutions delivered early-phase engineering, procurement, fabrication and commissioning of the HVDC converter station.
The East Anglia THREE windfarm is expected to be among the world’s largest when it becomes operational at the end of 2026, providing a capacity of 1.4 GW of clean energy – sufficient to power more than one million UK homes.
A testament to teamwork and innovation
“Installing our first ever offshore HVDC converter station is testament to the hard work of our teams and suppliers to deliver such a complex feat of engineering. This is a significant milestone for our East Anglia THREE project as we progress towards completion at the end of 2026,” said ScottishPower Renewables CEO Charlie Jordan.
Heerema Marine Contractors used the world’s largest crane vessel, SSCV Sleipnir to install the topside on top of the project’s offshore jacket foundations, delivered earlier this summer from Aker Solutions Verdal.
“We are proud to have installed the East Anglia THREE OCS topside on behalf of Aker Solutions. Completing this project in the shoulder seasons is a testament to our crew’s dedication and Sleipnir’s incredible capabilities. Working as one team with ScottishPower Renewables and Aker Solutions, we delivered a textbook example of successful offshore installation,” said Michel Hendriks, COO Heerema Marine Contractors.
A key role in a landmark renewable project
“East Anglia THREE marks Aker Solutions’ second HVDC delivery this year,” added Sturla Magnus. “It demonstrates our commitment to advancing renewable energy infrastructure and our capability to deliver on the most ambitious projects in the industry.”
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