European renewable energy leader RWE has commissioned its 17th Spanish onshore wind farm. Rea Unificado is a 40.8 megawatt site in Soria in the north-east of Spain. RWE installed nine Nordex turbines with a rated output of 4.53 megawatts and a rotor diameter of 149 meter each, by far the largest and most powerful in its Spanish fleet. Rea Unificado will be able to supply the equivalent of 30,000 Spanish homes with green electricity annually. The Soft-Spot foundations used by RWE at Rea Unificado are reinforced concrete spread foundations placed on an insulating expanded polystyrene layer. Instead of transferring the loads to the subsoil, the EPS redistributes them on a donut-shaped surface. This increases stability and reduces the diameter of the foundation slabs and volume of the concrete used. Thus, the amount of concrete and steel used was optimised, making the project more cost-effective and environmentally more sustainable.