It features 11 MHI Vestas V164-8.0MW turbines, nine of which are uprated to 8.4MW, while the remaining two deliver 8.8MW of power each through the use of internal power modes.
The final turbine was installed at the end of May, nine weeks after the first unit was put in place.
MHI Vestas’ 11 turbines are installed on 1,800-tonne suction-bucket foundations that create a vacuum to secure them to the seabed, removing the need for driving monopiles — the first commercial-scale deployment of this technology.
The EOWDC is connected to the shore via a 66kV cabling system, which has double the capacity of the current industry standard of 33kV.
President and chief executive officer at Vattenfall, Magnus Hall, said: "The innovation we have implemented at the EOWDC — and will continue to demonstrate — will turbocharge the growth of a global, low-cost offshore wind industry. And in doing so, do much to secure a fossil fuel free future for us all."
The EOWDC will be officially opened at an event with more than 100 business leaders and dignitaries, including Scotland’s First Minister, Nicola Sturgeon, gathered on a ferry for the opening ceremony.
Hugh McNeal, chief executive of UK clean energy lobbying group, RenewableUK, said: "These turbines, foundations and cables are state-of-the-art pieces of big kit which help developers to build projects faster and produce more power, more cheaply."
Vattenfall’s project, intended as a demonstration of next-generation technology in the offshore wind industry, has been repeatedly delayed — mostly due to US President Donald Trump’s failed legal challenges to block its construction.
It will be visible from one of Trump’s 17 golf courses.