ABB has installed the world’s highest-voltage offshore converter station in the North Sea. Alternating current electricity generated in three wind farms off the coast of Germany will be converted on the platform into high-voltage direct current (HVDC) for transmission to the mainland. The 320 kilovolts converter station has an 800 megawatt power transmission capacity making it the world's most powerful installation of its kind. In a three-day operation, the 9,300 metric tonne platform (topside) including the converter station was transported offshore by barge around 75 km off the German coast.