SG 6.6-155

Onshore wind turbine

Reaching new heights at medium & high wind
The SG 6.6-155 wind turbine combines technology with benchmark performance and proven reliability. It is part of Siemens Gamesa 5.X onshore platform and offers you an outstanding value proposition.
Customer Contact

Would you like to know more about the SG 6.6-155? Are you interested in partnering up with Siemens Gamesa? Please contact us!
Rotor diameter
155 m
Nominal power
Up to 6.6 MW
Special features
Key Facts
  • Greater AEP per wind turbine and optimized CAPEX for the project
  • Flexible design for logistics, construction and service resulting in lower cost of energy (LCoE)
  • Optimal solution for each project and site can be configured
Recommended for

Medium and high wind, onshore location

Other models in the platform
Model Rotor Dia. Wind type
SG 6.6-170 170 m For low and medium
SG 7.0-170 170 m For medium and high
Design excellence combined with proven wind turbine technology
Technical specification
Rated power 6.6 MW
Flexible power rating From 5.6 MW to 6.6 MW available
IEC class IIA (20 years lifetime), IIB (25 years lifetime) and IA (25 years lifetime)
Control Pitch and variable speed
Rotor diameter 155 m
Swept area 18,869 m²
Tower height 90, 102.5, 107.5, 122.5, 165 m and site-specific
Technology Geared
First prototype 2021
Proven technology for onshore wind projects: the Siemens Gamesa 5.X platform
Siemens Gamesa 5.X platform

The new Siemens Gamesa 5.X onshore platform has its roots in Siemens Gamesa technology, synonymous with innovation, know-how and reliability accredited through experience. The Siemens Gamesa 5.X platform incorporates proven technologies, minimizing risk and guaranteeing reliability for its three new product models: SG 6.6-155, SG 6.6-170 and SG 7.0-170 wind turbines.

These include a doubly-fed generator and partial converter combination, a compact drive train design with a three-stage gearbox, and the use of components widely validated on our platforms. The result is a wind turbine design that gives optimum performance and LCoE.

Technological highlights
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.
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.
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.
The pioneering RecyclableBlade is an option based on our proven IntegralBlade® technology and manufacturing follows the exact same process with only a change of resin. The new resin is as strong and reliable as before, but with added recyclability benefits. After reaching end-of-life and decommissioning the blade materials can be separated and recycled in new applications.
GreenerTower is an option, which focuses on achieving significant CO2 equivalent reductions in the steel plate production for steel towers. For the GreenerTower, a maximum of 0.7 tons of CO2 equivalent emissions are permitted per ton of steel. This means a CO2 reduction on the tower steel plates of at least 63% compared to conventional steel production.
Need Help?
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.
Our experts are on hand to help with any questions you have. Email us or login 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.
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.
Further onshore wind platforms


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