Spain's virgin wind power region, Extremadura, has closed its call for development proposals after the submission of 119 project applications totalling 3641 MW by 17 companies. The only major wind power bidder fully identified is Italian-Spanish utility venture Enel-Unión Fenosa Energías Renovables (Eufer). It applied to develop 20 projects totalling 594 MW, the largest single block. Yet to be revealed are the full identities of the remaining contenders, many with large development applications, suggesting they mainly consist of major corporations operating through specially created regional affiliates. The main mystery contenders are Desarrollos Eólicos Extremeños, applying to develop 428 MW, Generación Eólica Extremeña with 234 MW, Energéticas Eólicas de Eljas with 299 MW, Electra Malvana with 184 MW, Electra Sierra de San Pedro with 172 MW and Electra de Montánchez with 179 MW. The unusual (for Spain) denomination "Electra" for three developers strongly suggests a common corporate concern. Despite its official silence, inside sources at Spain's biggest wind operator, Iberdrola, also Extremadura's main electricity generator and distributor, said in June that the company's bid would at least matched Eufer's plan. The indication is that Iberdrola applied through a series of affiliates or failed to fulfil expectations.