Siemens Gamesa took the wraps off the latest addition to its turbine range that features a 155-metre rotor aimed at boosting output from low-wind sites and borrowing technology from another platform in its arsenal.

The SG 4.7-155 joins the OEM’s 4.X range with a nominal rating of 4.7MW, but can operate between 4MW and 5MW depending on site conditions.

The SG 4.7-155 will employ one of the two rotors developed for Siemens Gamesa’s 5.X platform, in what the manufacturer said is the latest example of technology sharing across its range.

Siemens Gamesa onshore CEO Lars Bondo Krogsgaard said: “The new model will make us much more competitive in the low wind market segment, complementing our SG 5.8-170 to offer our customers broader options depending on their project characteristics and needs.

“This type of modular approach using the best of our onshore innovation will help us lower the cost of energy for them and offer the best solutions for the energy transition.”

Siemens Gamesa expects the new model’s energy production to outstrip the SG 5.0-145 by 5% in average low-wind conditions, helped by its 76-metre blades of fiberglass reinforced with pultrude carbon.

A prototype of the new turbine is expected to be ready mid-2021 with production by the end of next year.

Krogsgaard joined the company at the start of November to lead a turnaround plan for the Siemens Gamesa onshore business after being hired by group CEO Andreas Nauen earlier this year.

The company also has a newly-appointed head of onshore technology in Jorge Magalhães.

Wind

Siemens Gamesa boosts technology-sharing as new low-wind turbine unveiled