DNV GL and Siemens Wind Power announced that the Siemens’ SWT-3.6-130 onshore wind turbine has been successfully type certified by DNV GL. This certification confirms that the new turbine complies with all the requirements of the international wind-turbine standard IEC 61400-22 for conformity testing and certification.

From left to right: Christer Eriksson, Service Line Leader Type Certification at DNV GL – Energy Trine Bjerre Pedersen, Senior Engineer at DNV GL – Energy, Bente Vestergaard, Head of Section Mechanical Structures at DNV GL – Energy, Henrik Hansen, Certification Project Manager at Siemens, Herluf Asp Soerensen, Turbine Project Manager at Siemens, Jonas Stenzel, Head of Global Certification at Siemens, Mike Wöbbeking, Head of Certification Body & Service Area Leader Renewables Certification at DNV GL – Energy.
The SWT-3.6-130 is the second turbine from Siemens’ onshore direct-drive platform. It features larger yet lighter blades than previous turbines, and has a rotor diameter of 130 meters. The turbine is expected to deliver 19% higher annual energy production in low winds than D3 Mk I wind turbines. It is available in heights of 85, 115, and 135 meters, making it ideal for almost all onshore locations.
As wind power becomes more mature and widespread, wind-farm developers are facing the prospect that the sites with the best wind conditions have already been developed. They now have to investigate locations with less optimal wind conditions. To help them develop such sites cost-effectively, Siemens created its new onshore direct-drive turbine platform that maximizes yields in low to medium- winds.
Filed Under: News, Turbines