Anholt Offshore Wind Farm



The offshore wind farm Anholt is an offshore wind farm in the Kattegat between the port city of Grenaa as well as the eponymous island. With a rated capacity of 400 MW, it was the most powerful offshore wind farm in Denmark at the official opening on September 4, 2013.


The total area of the wind farm, which is located 15 km away from the east coast of Jutland, is 88 km ², the island of Anholt is 20 km away. As a starting point for the construction of wind farms, but also for the subsequent maintenance serves the Port of Grenaa, individual major components are delivered directly from the manufacturer to the wind farm.

Overall, the wind farm will provide electricity for about 400,000 households Danish, corresponding to approximately 4% of Danish electricity consumption. The feed-in tariff for the first 20 TWh is 105.1 øre / kWh (corresponding to about 14 cents / kWh). Then, after about 12-13 years of operation, the electrical energy produced is sold without further subsidy on the open market.


For use are 111 wind turbines of the type Siemens SWT 3.6-120 with a rated power of 3.6 MW, a rotor diameter of 120 meters and a hub height of 81.6 meters, thus the total height of the plant is up to the rotor tip 141.6 meters. The wind turbines were installed in water depths of 15-19 meters. As a founding monopile were used, which have a length of 33-47 meters depending on the location of the turbine and 20 to 30 meters are driven into the seabed. Over medium-voltage cables that were produced by the manufacturer Nexans in Germany, the wind turbines are connected to the wind farm 's substation platform, the transformers transform the AC voltage from 33 kV to 220 kV. From the transformer platform an export cable leads to trigeminal near Aarhus, where connection is made to the Danish high voltage grid. The submarine cable leads 25 km to the north of the landfall Grenaa, from there 55 km overland to trigeminal.


Has been configured, the wind farm of Danish energy company Dong Energy, which received approval for construction in July 2010. In March 2011, Dong Energy sold a 50% stake to a consortium of Pension Danmark, who earned 30 % of the shares, as well as PKA, who took over the remaining 20 %.

We started the offshore work on New Year's Eve 2011 with the ramming of the first monopile, a day before the originally scheduled start of construction. Officially, the works began on 13 January 2012. In early August were installed all 111 monopile including transition pieces. The wiring was done according to schedule, the first wind turbines were built from September 2012. The first turbine dined late September electrical energy into the grid, others followed until the end of the year. On 19 May 2013, the last wind turbine was erected and a month later connected to the grid, so were all wind turbines in service on or after June 19, 2013. The official commissioning of the wind farm took place on 5 September 2013.

During the construction of a security zone was established around the wind farm construction site, were banned in the ship's movements.