Construction of Horns Rev 3 has started
Construction work at Denmark's largest wind farm Horns Rev 3 has begun. The project started with Vattenfall's installation of the first of a total of 49 foundations in the North Sea. When the wind farm is completed, it will supply enough energy to cover 425,000 Danish households.
"Horns Rev 3 is the first of three wind farms that Vattenfall will build in Denmark in the coming years. These wind farms will contribute to our strategy of fossil-free energy production over a generation," says Gunnar Groebler, head of Vattenfall's Wind Business.
It is the first wind turbine park to be built in Denmark in five years. The foundation consists of 40-50-meter-high monopile foundations in steel with a diameter of 6,5 meters. The monopiles are inserted about 30 meters below the seabed and must carry MHI Vestas' 8.3 MW wind turbines, which are currently some of the world's most powerful.
In early October, the first four monopolies were loaded onto a special craft, Innovation, in Holland and inserted into the seabed. The next four monopolies are loaded and shipped then Esbjerg Harbor in mid-October.
Before construction could begin, seabed mixtures had to be completed, including a geological survey and subsequent detonation of old marine mines. Due to noise problems, a support vessel is used to place an air bubble installation on the seabed around the site. The installation creates a sound-absorbing double layer with air bubbles that protect marine mammals in the area.
The construction work takes place in an 88-square kilometer area in the North Sea, the nearest distance being at least 34 kilometers from the west coast of Jutland. In addition to Horns Rev 3, Vattenfall has contracted to construct the Danish wind farm Kriegers Flak and the coastal wind farms Vesterhav Syd and Nord in the coming years.
Source: Vattenfall / Maritime Denmark