Siemens to deliver transformers for 1,075 MW Seagreen 1 offshore wind project in the Firth of Forth

Siemens Energy has been selected by MHI Vestas Offshore Wind (MHI Vestas) to deliver 114 low-loss 66kV distribution transformers for the Seagreen Offshore Wind Farm in Scotland. With an installed capacity of 1,075 megawatts (MW), the wind farm will be Scotland’s single largest source of renewable energy and is forecast to provide low carbon energy for around 1.3 million homes.

The fluid immersed distribution transformers will complement 114 MHI Vestas’ 10 MW turbines that the company will deliver to the wind farm located 27 km from the Angus coastline in Scotland. The low-loss distribution transformers were designed to meet high-efficiency requirements. The transformer voltage class of up to 72.5 kilovolts (kV) will enable larger power capacities, such as provided by MHI Vestas’ 10 MW offshore wind turbines, while keeping energy losses low. After commissioning, the distribution transformers will transform the voltage from the low voltage of produced electricity to the medium voltage level of 66kV needed to feed the offshore transmission substation before going to the mainland with an even higher voltage.

It is anticipated that the Seagreen Offshore Wind Farm will be operational by 2022/2023.