Siemens Gamesa SG 2.7-129 onshore wind turbine

SG 2.7-129

Onshore wind turbine

New turbine with increased capacity factor for greater returns
Developed specifically for medium to low wind sites and market conditions in America, the SG 2.7-129 builds on the robust and successful 2.3 MW geared product series to offer a 8.4% increase in annual energy production.
Customer Contact

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Rotor diameter
129 m
Nominal power
2.75 MW
Wind class
Key Facts
  • Increased capacity factor for greater returns
  • Combines trusted technology and continuous innovation
  • Based on most robust and successful 2.3 MW product line, with more than 9,100 units installed
  • The product configuration maintains a similar design utilizing components from its predecessor, the SWT-2.625-120.
Recommended for

Low to medium wind, onshore locations

Other models in the platform
Model Rotor Dia. Wind type
SG 2.1-114 114 m For low to medium wind
SG 2.1-122 122 m For low wind
SG 2.6-114 114 m For medium to high wind
SG 2.6-126 126 m For low to medium wind
Proven technology boosts capacity and simplifies maintenance
Technical specification
General details
Rated power 2.75 MW
Wind class S
Control Pitch and variable speed
Standard operating temperature Range from -20ºC to 35ºC (1)
Diameter 129 m
Swept area 13,070 m²
Power density 210.41 W/m²
Length 63.5 m
Airfoils Siemens Gamesa
Material Fiberglass reinforced with epoxy resin
Type Tubular steel tower with concrete base
Height 87 m and site-specific
Type 3 stages
Type Full scale converter
Voltage 690 V AC
Frequency 60 Hz
Protection class IP 34
Power factor 0.9 CAP-0.9 IND throughout the power range (2)

(1) Different versions and optional kits are available to adapt machinery to high or low temperatures and saline (C4) or dusty environments.

(2) Power factor at generator output terminals before transformer input.

Designed for the diverse site conditions in the US
AEP increase SG 2.7-129 vs. SWT-2.625-120
The SG 2.7-129 wind turbine is the latest Siemens Gamesa onshore turbine developed to meet the medium- to low-wind site and market conditions of the American market. To deliver the lowest Cost of Energy and maximize performance across various sites in the US, the SG 2.7-129 is designed with the higher capacity factor for our customers demand. This new model enhances our wind turbine catalog by demonstrating our ability to offer flexible solutions for every context.
Technological Highlights
The nacelle is specifically designed to make the moving parts of the geared turbine easier to reach, helping to lower service costs and reduce work time. The fully enclosed asynchronous generator features a squirrel-cage rotor without slip rings, to extract the maximum energy yield.
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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