Siemens Gamesa launches SG 4.2-145 for onshore, SG 8.0-167 DD for offshore

28.11.2017
Siemens Gamesa Renewable Energy has launched the new geared turbine SG 4.2-145, as part of the new geared turbine platform (photo: Siemens Gamesa)
Siemens Gamesa Renewable Energy has launched the new geared turbine SG 4.2-145, as part of the new geared turbine platform (Photo: Siemens Gamesa)

Two new turbines, introduced to the public at the WindEurope Conference & Exhibition in Amsterdam, are part of Siemens Gamesa’s new “One Segment/One Technology” philosophy for geared onshore turbines and direct drive offshore turbines.

Siemens Gamesa Renewable Energy has launched the new geared turbine SG 4.2-145, as part of the new geared turbine platform Siemens Gamesa 4.X. The model SG 4.2-145 offers best-in-class LCoE at medium wind sites in the 4 MW segment and marks the start of a next-generation product platform for high performance geared onshore wind turbines. This new turbine for onshore will increase the annual energy production by 21%.

Additionally, Siemens Gamesa launches the new direct drive offshore wind turbine SG 8.0-167 DD, with a rotor diameter of 167 m. Its B82 blades will allow for an 18% greater swept area and up to 20% higher annual energy production than its predecessor SWT-7.0-154. As part of the proven offshore direct drive platform, the SG 8.0-167 DD utilizes known technology, combined with its rotor upgrade, to offer customers reliable revenue streams with reduced cost of energy and mitigated risk.

Both product launches are part of SGRE`s new “One Segment/One Technology” philosophy announced in early November. By 2020, the company will have one technology per business segment. In onshore, SGRE will streamline its technology approach and focus on geared solutions. In offshore, SGRE opts for the direct-drive platform only.

“The single platform strategy helps the company to transition to a more focused offer in the medium-term by utilizing economies of scale throughout the supply chain. This is how we will deliver lasting value to our customers”, says CEO Markus Tacke. Recently launched models based on the proven product platforms of Siemens Gamesa will help to bridge into the next years when the new geared platform goes into serial production.

Geared SG 4.2-145 wind turbine as part of next-generation onshore product platform

The onshore model SG 4.2-145 is rated at 4.2 MW and features a 145 m rotor. Its medium wind design will cover a broad range of sites. The technology is based on proven concepts such as a 3-stage gearbox and a Double Fed Induction Generator (DFIG). Based on the Siemens Gamesa 4.X platform, further models for high and low-wind sites with rotor diameters of 132 and above 150 m are currently under development.

The new turbine offers maximum flexibility regarding a power range that can be adjusted between 4.0 and 4.4 MW and to different tower configurations that allow for hub heights of 107.5, 127.5 and 157.5 m. Two converter options help to comply even with enhanced demands in grid performance. Compared to the model G132-3.465 MW the new SG 4.2-145 offers an increased swept area of 21% resulting in an enhanced AEP by more than 21%. The prototype installation is planned for autumn 2018, while certification is expected for 2019. Start of production will be in early 2019.

8 MW direct-drive offshore wind turbine now with167 m rotor

The latest turbine on the Offshore DD platform, the SG 8.0-167 DD offers a rotor diameter of 167 m. It will utilize proven technology and allow a short time to market by re-using all other components from its predecessor, the SWT-7.0-154. In January 2017, the first prototype in the 8MW class was installed and commissioned according to plan in Østerild, Denmark. While a testing program with focus on the electrical system is performed on this prototype, an additional SG 8.0-167 DD prototype will be installed in Østerild in 2018. With a larger rotor, it will be used mainly for blade tests. The SG 8.0-167 DD is expected to be market-ready in 2020.

Volker Buddensiek / Siemens Gamesa

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