Siemens to supply wind turbines to first Finnish offshore wind farm

Siemens won its first commercial offshore wind order from Finland. The company will supply, install and commission 10 wind turbines, each with a capacity of 4 MW and a rotor diameter of 130 meters, for the Tahkoluoto offshore wind farm in the Baltic Sea.

The customer is Suomen Hyàƒ¶tytuuli Oy, a wind power producer owned by eight Finnish utilities, headquartered in Pori. Installation of the wind turbines is scheduled to begin in the summer of 2017, with the start of operations expected by autumn 2017.

With a capacity of 40 MW, and an annual net power production of over 155 GWh, the offshore wind power plant will generate enough power to supply 8,600 electrically heated Finnish single-family houses with clean energy. Siemens will also be responsible for servicing the wind turbines.

Tahkoluoto offshore wind farm is located about 0.5 to 3 kilometers from shore in water from 8 to 15 meters deep. The wind turbines will be mounted on specially designed, gravity-based steel foundations in order to withstand heavy ice loading. The government of Finland is also contributing nearly $22 million toward the demonstration project in icing conditions.

“The conditions for offshore wind power are excellent in Finland. We have a long coastline, windy conditions, shallow waters and a hard seafloor,” says Toni Sulameri, the Managing Director of Suomen Hyàƒ¶tytuuli Oy.

In 2010, Siemens already supplied one wind turbine with a capacity of 2.3 MW to Suomen Hyàƒ¶tytuuli Oy for the Pori pilot project, located 1.2 km off the Finnish coast. This pilot turbine will be surrounded by the 10 wind turbines of the Tahkoluoto wind farm. Siemens has to date installed more than 5.8 GW of offshore wind power capacity worldwide, with two gigawatts commissioned in the last fiscal year alone.

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The Clarion Energy Content Team is made up of editors from various publications, including POWERGRID International, Power Engineering, Renewable Energy World, Hydro Review, Smart Energy International, and Power Engineering International. Contact the content lead for this publication at

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