Denmark, April 30 -- RWE has taken an important step in the construction of the 1.1 gigawatt (GW) Thor offshore wind farm in the Danish North Sea: the first of 72 monopile foundations has been successfully installed.The monopiles were shipped from the heavy-lift terminal in Eemshaven, the Netherlands to the Thor construction site in the Danish North Sea, located approximately 22 kilometres off the west coast of Jutland, and installed by the vessel "Les Alizes". Five monopiles can be loaded in one shipment. The monopiles are around 100 metres in length and weigh up to 1,500 metric tons each. This is roughly equivalent to the weight of 1,000 small cars. Secondary steel structures for the foundations are being handled from the Danish Port of T...