Onshore wind turbine

For tough conditions
For the first time a typhoon class wind turbine is available with Direct Drive technology. The SWT-DD-120 represents 10 years of award-winning technology, enhanced with a flexible power rating in a new approach to wind power.
Customer Contact

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Rotor diameter
120 m
Nominal power
3.9 - 4.3 MW
Direct Drive
Special features
Key Facts
  • Increased 120 m rotor diameter for higher capacity even in the strongest winds
  • Up to 23% greater annual energy production
  • OptimaFlex: performance precisely tailored to your needs
Recommended for

High wind, onshore locations

Other models in the platform
Model Rotor Dia. Wind type
SWT-DD-130 130 m For medium wind
SWT-DD-142 142 m For low wind
Maximizing performance with a state-of-the-art rotor
Technical specifications
General details
Rated power 3.9 - 4.3 MW
Wind class IEC IA/S/T
Control Pitch regulation with variable speed
Standard operating temperature Range from -20ºC to 40ºC
Diameter 120 m
Swept area 11,300 m²
Power density 380.53 W/m²
Length 58.6 m
Airfoils Siemens Gamesa proprietary airfoils
Material Fiberglass reinforced with epoxy
Type Tubular steel tower
Height Steel: 85 m and site-specific
Type Synchronous, PMG
Voltage 690 V AC
Frequency 50 Hz or 60 Hz
Power factor 0.93 CAP-0.93 IND throughout the power range
Solutions as flexible as the wind is variable
SWT-DD-120 includes the OptimaFlex product strategy. Rather than simply offering a product engineered around a fixed set of parameters, OptimaFlex wind power means our highly skilled team will work with you from day one to deliver the turbine that matches your requirements. The generators can be finely tuned to deliver the precise power levels your project needs and the towers will be optimized for the conditions at your site, not overengineered.
Technological highlights
The development of IntegralBlade® technology enables each reinforced fiberglass blade to be cast in one piece. This process eliminates weaker areas at glue joints and delivers blades of optimum quality, strength and reliability.
Turbine sensors continuously transmit data to the Siemens Gamesa Diagnostic Center, enabling the early detection of anomalies and preventing potential failures. By analyzing vibration patterns we can optimize your service plan and anticipate repairs before serious damage occurs.
Further onshore wind platforms


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