Siemens to deliver final offshore transformer module for 950 MW Moray East wind project off Aberdeenshire coast

The third and final Siemens Energy Offshore Transformer Module® (OTM) is ready to leave the fabrication yard to sail to the Moray East offshore wind farm project, located 22km 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 with the capacity to deliver 950 MW clean energy from the Moray East project.

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

The OTMs will sit on three-legged jackets and each weigh-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 the national grid where it will be distributed to homes and businesses.

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

The Moray East offshore wind project is owned by a consortium of EDP Renovaveis SA, Engie SA and Diamond Generating Europe Limited, a wholly-owned subsidiary of Mitsubishi Corp.