What they are not telling you is after Germany withdraw their credit to wind power, fifty percent of the turbines became idle also after three (3) years of operation in Spain they also started shouting down because of the reliability. The technical issue has to do with casing and gears. They need to make out of special alloy in order withstand the force of turbines. But this material is very expensive and make it not economical. Thus is the root of the problem.