Heavylift outfit Mammoet was brought in by Siemens Gamesa Renewable Energy (SGRE) to transport the three 94-metre-long blades for its first 11MW offshore wind turbine – the SG11.0-193DD Flex – from the storage area at the OEM’s factory in Aalborg, Denmark, to a nearby port, where they were transported onward to Denmark’s national testing centre in Osterild.
The contractor customised a 100-metre-long trailer supported by 12 axle lines along with a four-axle truck, specially built, to navigate a 1km route to the quayside. “The trailer was built with conventional axle lines at the Mammoet yard in Brande and then transported in one piece to the storage area in Aalborg,” explained Mammoet, “saving 50% of the time compared to other industry solutions.” By using only use one truck for the operation, the company noted, the method was a “greener choice” as lower-emission.
SGRE’s carbon-reinforced 94-metre-long B94 integral blades are being flown by a digitally souped-up version of the OEM’s recently launched 10MW SG10.0-193DD, using so-called ‘DD Flex’ technology to get another 6-7% annual energy production out of the ultra-large nameplate machine.
Developer Orsted last week named SGRE to deliver over 1GW’s-worth of its top-of-the-line SG11.0-200DD offshore wind turbines for two projects in the German North Sea.