Siemens Gamesa has announced that it will be adding a new wind turbine to its 4.X platform range, the SG 4.7-155. The turbine will have a 155-metre rotor and state-of-the-art blades designed to significantly increase energy production at low wind sites.
The SG 4.7-155 will have a nominal power rating of 4.7 MW, and will be equipped with OptimaFlex technology, enabling it to operate between 4 and 5 MW, depending on site conditions. The platform will use one of the two rotors developed for the Siemens Gamesa 5.X platform. This approach, according to the company, optimises R&D investment and industrial capital expenditure, reduces the development cycle, thus improving the time-to-market of new products.
The development of low wind turbines is especially important for already well-developed wind markets where higher wind sites have mostly already been developed. By increasing the size of the rotors, wind turbines can make economic use of lower wind conditions.
A prototype of the new model is expected to be ready by mid-2021, with the start of production planned for the end of 2021. The model will use a 76-metre blade.
Lars Bondo Krogsgaard, Onshore CEO for Siemens Gamesa, said: “The new model will make us much more competitive in the low wind market segment, complementing our SG 5.8-170. This type of modular approach using the best of our onshore innovation will help us lower the cost of energy for our customers and offer the best solutions for the energy transition.”