SG 3.4-145

Onshore wind turbine

The lowest LCoE in the 3.0-3.6 MW segment

The new variant of Siemens Gamesa’s top performing 3.X platform, the SG 3.4-145 wind turbine is designed to maximize the Annual Energy Production in its projects. Its addition to our portfolio is a clear response to the needs and expectations of the wind energy developers and investors. The SG 3.4-145 is optimized to deliver the lowest Levelized Cost of Energy (LCoE), through a balance of performance, minimization of BoP costs, and efficiency in the WTG design.

Contact Siemens Gamesa

Would you like to know more about the SG 3.4-145? Are you interested in partnering up with Siemens Gamesa? Please contact us!

marketingindia@siemensgamesa.com | onshoresales@siemensgamesa.com

Rotor diameter

145 m

Nominal power

3.465 MW

Technology

Geared

Special features

OptimaFlex

Key Facts

Optimized design for low wind conditions
Benchmark solution with high capacity factor
48% more AEP than the previous SG 2.2-122
Up to 3.6 MW with flexible rating strategy

Recommended for

For low and medium wind conditions

Other low and medium-wind turbines

Model	Rotor Diam.	Wind type
SG 5.0-145	145 m	For medium winds
SG 6.6-170	170 m	For low and medium winds

Based on proven technology

With a 71m fiberglass blade, optimized for low and medium wind sites along with thoroughly tested and validated airfoils, the SG 3.4-145 model guarantees both high-energy production and low-noise emission levels

The SG 3.4-145 turbine stands 127.5m tall, with a blade-tip height of 200m, thus harnessing the maximum available wind potential at every site

General details
Rated power	3.465 MW
IEC class	IEC III/S
Flexible Power rating	3.0-5.0 MW
Control	Pitch and variable speed
Standard operating temperature	Range from -20ºC to 45ºC (with de-rating)

Rotor
Diameter	145 m
Swept area	16,513 m²
Power density	209.8 W/m²

Blades
Length	71 m
Airfoils	Siemens Gamesa
Material	Fiberglass reinforced with epoxy resin

Tower
Type	Multiple technologies available
Height	105.5, 124.5, 127.5 m and site-specific

Gearbox
Type	3 stages

Generator
Type	Doubly-fed induction machine
Voltage	690 V AC
Frequency	50 Hz
Protection class	IP 54
Power factor	0.95 CAP-0.95 IND throughout the power range (1)

(1) Power factor at generator-output terminals, on low voltage side before transformer input terminals.

The most optimal product for low winds

The SG 3.4-145 wind turbine joins the Siemens Gamesa portfolio with a clear objective: to complement the product offer for low wind sites where markets require nominal powers higher than 3 MW at an optimum Levelized Cost of Energy. The SG 3.4-145 wind turbine is based on the SG 3.4-132, with several GWs installed worldwide. Thanks to the operative experience accumulated over 40 years in the wind energy market, and the application of thoroughly tested and validated technologies, this Class III/S solution ensures high performance and reliability.

Technological highlights

Reliable geared technology

Our onshore approach is focused on geared technology, in which we have extensive knowledge and expertise. The hallmarks of Siemens Gamesa turbines are: reliability, robustness and a modular, flexible design for optimum adaptation and maximization of production at any site and in all wind conditions.

Reinforced fiberglass blades

This turbine is equipped with blades made of fiberglass reinforced with epoxy resin. Together with the state-of-the-art aerodynamic profile, we can produce lighter blades having greater strength and improved dynamic behavior with less load transmitted to the rest of the components.

OptimaFlex

Thanks to OptimaFlex technology, we go beyond the traditional off-the-shelf approach that results in products that are sub-optimal for many sites, and we deliver a uniquely tailored solution that is perfect for our customers’ specific needs. Optimized site design combined with a customizable product platform, based on flexible power rating, site specific towers and optimized BoP solutions, allow Siemens Gamesa to deliver reduced LCoE by increasing AEP while optimizing cost.

Remote diagnostics services

Turbine sensors continuously transmit data to our diagnostic centers, 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

Brochures

SG 3-4-145 Brochure India

PDF

SG 3.4-145 India brochure

Brochures

SG 3-4-145 Brochure North America

PDF

SG 3.4-145 North America brochure

The best product for each onshore project

PDF

Siemens Gamesa onshore technology

Onshore technological solutions

PDF

Onshore technological solutions

Need Help?

If you’re interested in becoming a client

The solutions we provide are driven by the benefits they deliver. This applies as much to our pursuit of absolute safety as to maximizing your return. Whether by inventing a new technology, evolving an existing product, or simply finding a smarter way of working, we strive to lower costs and raise returns on investments.

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If you’re an existing client

Our experts are on hand to help with any questions you have. Email us, or log in to our customer portal. Here you’ll be able to monitor configuration, production, and agreements for your wind power plants, and find relevant news from Siemens Gamesa Renewable Energy.

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 over 40 years of experience - we know just what it takes to develop and manage a successful onshore project.

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