Statoil and Statkraft are jointly implementing the wind farm off the coast of the UK.
Under the contract, Siemens will deliver the entire power transmission system which includes one onshore and one offshore transformer substations for the 402MW project.
Scheduled to be completed by the end of 2016, the grid connection installation of the wind turbines is expected to begin in early 2017.
The scope of supply for the grid connection includes the onshore station which converts the electricity into 400 kV for feeding into the transmission grid as well as all necessary components, such as the offshore transformer substations, which convert the wind power to 132kV.
The wind farm, with a transmission capacity of 402MW, will supply climate-friendly energy for over 410,000 home in UK.
Siemens Power Transmission Division Transmission Solutions Business Unit CEO Tim Dawidowsky said: "To date, we have installed nine connections using AC technology with a total transmission capacity of more than three gigawatts, transporting enough electricity to supply three million households with wind power."
Separately, Siemens is installing five DC grid connections with cable lengths of up to 200km off the coast of Germany in the North Sea, to ensure efficient power transmission in wind farms.