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Smulders sends final Siemens OTM to Moray East offshore wind farm

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Smulders has sent the third and final Siemens Energy Offshore Transformer Module (OTM) from its fabrication yard to the Moray East offshore wind farm project, located 22 kilometres from the Aberdeenshire coast in Scotland.

An OTM is the substation platform out at sea and in a world’s first, three of these will be connected to deliver the 950MW Moray East project.

The OTMs, which were fabricated and fit out in Hoboken, Belgium by Smulders and ENGIE Solutions and Siemens Energy are an essential part of the wind farm. They stabilize and maximize the voltage of the power received from offshore before transmitting the electricity to shore.

The platforms will sit on three-legged jackets and each one weighs in at around 1,100 tonnes. Each module will transmit the power generated by the 100 turbines across the 295km2 site, back to shore and into homes and businesses.

The OTM, which is significantly smaller in size and weight compared to conventional alternating current platforms, will transform the output of the wind turbines from 66 kV to the transmission voltage of 220 kV.

Siemens Energy designed the OTM using a modular fabrication approach which saves cost and time in the delivery.

“This is a significant milestone in the project to bring low cost, low carbon power to homes and businesses across Scotland. Using a modular approach means we have been able to optimize the platforms to the specific needs of the customer and the area being developed, ultimately saving time and cost for the developer. Achieving this milestone is a testament to the hard work of the team who have delivered these components with zero snags to the customer, which is an incredible achievement.”

Mark Pilling, head of Transmission Solutions, Siemens Energy UK&I.

“This latest major milestone in the delivery of Moray East is a reminder that the step-change in the transition to low-cost, low-carbon power is enabled by scale and by world-leading innovations. Those innovations include the use of three OTMs, whose modular construction itself marked a major advancement in offshore transmission technology.

“I would like to thank all those working for the contractor and subcontractors involved in advancing the project’s transmission infrastructure safely to this point. As a well-known supplier in the UK market, Siemens Energy, responsible for the delivery of the project’s transmission infrastructure, has created opportunities for local UK firms to participate in the global offshore marketplace on which offshore wind depends for making renewable energy highly competitive.”

Marcel Sunier, project director for Moray Offshore Windfarm (East) Ltd.

“The fabrication of the OTMs according to the Siemens Energy modular design approach with skidded-in containers was a success. This milestone – three sail-aways without any snags – reached in a period dealing with a lot of COVID restrictions, has been achieved not only due to the very good co-operation between Siemens Energy and Smulders – ENGIE Solutions on all levels, but also due to the fact the structural and electrical works could be executed in parallel for the major part of the construction period.”

Smulders’ project manager, Bart Van Rooy.

“We are proud to have contributed to this important renewable energy project, that combines the expertise of the Siemens Energy, Smulders and ENGIE Solutions teams. This achievement is the result of close cooperation between all the partners and strengthens the ambition of ENGIE Solutions to be an accelerator of the low-carbon energy transition.”

Mark Dirckx, head of Industry segment ENGIE Solutions.
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