Transmission system operator TenneT has installed the 900MW BorWin Gamma topside on its jacket foundation in the German North Sea.
The float-over installation procedure was completed around noon today, the TSO said.
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Heavy lift vessel Xiang He Kou transported the 18,000-tonne platform to the installation site some 130km off the German coast from Dubai shipyard Drydocks World.
The vessel arrived on site last weekend, having set off from the Middle East in early September.
BorWin Gamma will be the grid hub of the BorWin3 HVDC connection scheduled to go online in 2019.