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Siemens Energy has installed the prototype of a new 4MW wind turbine in Østerild, Denmark.

The new wind turbine type is a designated SWT-4.0 and is based on the technology of the SWT-3.6 offshore wind turbine. The prototype 4.0MW turbine is initially equipped with the standard 120 meter rotor of the 3.6MW turbine but will shortly be upgraded with a 130 meter rotor using 63 meter long rotor blades. Following testing the SWT-4.0-130 will be launched for sale with the 130 meter rotor diameter in spring 2013.
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