SG 2.9-129

Onshore wind turbine

Built on proven technology and continuous innovation

Developed specifically for medium to low wind sites and market conditions in America, the SG 2.9-129 builds on the robust and successful 2.3 MW geared product series to offer a 10.3% increase in annual energy production.

Customer Contact

Would you like to know more about the SG 2.9-129? Are you interested in partnering up with Siemens Gamesa? Please contact us!

onshoresales@siemensgamesa.com

Download the product brochure

Rotor diameter

129 m

Nominal power

2.9 MW

Technology

Geared

Wind class

Key Facts

Higher capacity factor for greater returns
Proven technology, boosting capacity and simplifying maintenance
Based on most robust and successful 2.3 MW product line, with more than 9,700 units installed
Certified 25 years design lifetime, standard

Recommended for

Low to medium wind sites, onshore locations

Other models in the platform

Model	Rotor Dia.	Wind type
SG 2.1-114	114 m	For low to medium wind
SG 2.2-122	122 m	For low wind
SG 2.6-114	114 m	For medium to high wind

Proven technology boosts capacity and simplifies maintenance

SG 2.7-129 onshore wind turbine techical drawing — Gearbox with two planetary stages and one helical for increased capacity, combined with an adaptive yaw and efficient direct cooling systems to improve performance.

Innovative DinoTail® Next Generation serrations attached to the trailing edges of the 63.5-meter blade combine with Vortex generators to reduce acoustic emissions and improve performance.

Technical specification

General details
Rated power	2.9 MW
Wind class	S
Control	Pitch and variable speed
Standard operating temperature	Range from -20ºC to 45ºC (1)

Rotor
Diameter	129 m
Swept area	13,070 m²
Power density	221.88 W/m²

Blades
Length	63.5 m
Airfoils	Siemens Gamesa
Material	Fiberglass reinforced with epoxy resin

Tower
Type	Tubular steel tower
Height	87 m and site-specific

Gearbox
Type	3 stages

Generator
Type	Full scale converter
Voltage	690 V AC
Frequency	60 Hz
Protection class	IP 54
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. Derating may apply under certain siting conditions above 30ºC.

(2) Power factor at generator output terminals on lower side of MV transformer.

Designed for the diverse site conditions in the US

AEP increase SG 2.9-129 vs. SWT-2.625-120

The SG 2.9-129 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 2.9-129 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

Reliable geared technology

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.

DinoTails® Next Generation

As an aerodynamic blade add-on, DinoTails® Next Generation reduces the sound power levels by using a serrated trailing edge mounted at the blade and adding finer combs in between the teeth. This world-leading noise reduction technology enables us to create value for our customers by maximizing AEP and reducing the LCoE in sites with noise constraints.

Download the Dinotails® Flyer

IntegralBlade® technology

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.

Remote diagnostics services

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.

Downloads

Read more about Wind Turbine SG 2.9-129

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Wind Turbine SG 2.9-129 brochure

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Onshore technological solutions

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If you want to know more about our onshore business

Operating in around 90 countries, Siemens Gamesa offers an extensive range of onshore wind turbine technologies to cover all wind classes and site conditions. By listening to our customers - and backed up by almost 40 years of experience - we know just what it takes to develop and manage a successful onshore project.

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