In the north-east of Spain, in Soria, RWE is constructing its 40.8MW Rea Unificado wind farm. The company is erecting nine turbines with a rated output of 4.53MW each. For this onshore project, RWE has used 'Soft-Spot foundations' for the first time.
Reinforced concrete spread foundations are used and placed on an EPS layer – an insulating material made of expanded polystyrene. Instead of transferring the loads to the subsoil, the EPS redistributes them to a donut-shaped surface. This increases stability and reduces the diameter of the foundation slabs and volume of the concrete used. The Rea Unificado wind farm is scheduled to be fully operational by the end of the year.