Vattenfall has started construction of the 1500MW Hollandse Kust Zuid offshore wind farm off the coast of the Netherlands.
The Swedish developer said that the first vessel transporting foundations had departed today for the construction site.
Construction is starting with the installation of monopile foundations, each of which have been designed specifically for the location where they will be installed.
The heaviest and largest monopile weighs 955 tonnes and is 75 metres long, while the lightest and shortest foundation still weighs 735 tonnes and is 62 metres long.
The monopiles will be installed in water depths varying from 17 to 28 metres.
Vattenfall Netherlands chief executive Martijn Hagens said: “With the construction of the first subsidy-free offshore wind farm in the world we are starting a new chapter, demonstrating that this market is becoming mature.
“I am extremely proud of the step we’re now taking, bringing Dutch households and our industrial partners another step closer to fossil free living.”