The German manufacturer will reveal the exact nature of the turbine at the WindEnergy Hamburg trade show next week. But a spokesperson for Siemens said that the turbine will be based on its direct-drive D3 platform with the addition of a larger rotor, as well as "several other innovations".
Siemens currently offers the 3-3.2MW turbines with rotors of between 101 and 113 metres. The largest rotor makes the IIa wind-class turbine suitable for medium-wind sites.
The D3 platform was launched in 2010 as Siemens' largest onshore turbine at the time. It also represented its first move into direct-drive turbines, which the company said lowered the top-head mass and improved reliability.
In March, Siemens revealed an uprated version of the turbine, giving the new machine a 3.2MW capacity and a 4% higher annual yield.
Many turbine manufacturers have been producing low-wind turbines for a number years, allowing them to gain market share.
Nordex has said that its low-wind N117 turbine has been key to the company's impressive showing in recent years, helping to push it into the top ten global turbine manufacturers. Enercon, GE and Vestas also have established low-wind platforms.
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