Spain generates 11.5% of the country's energy requirements through wind turbines.  Over the past 12 years, Spain has put a lot of energy into developing renewables and is now the third highest generator of wind energy in the world, after the US and Germany.  Percentage-wise, they are way ahead.  The US generates only 1% of its total energy requirements with wind turbines.

Spain aims to meet 30% of it's annual electricity requirements using renewable sources by next year, according to an article in Alternative Energy, a website that compiles information on alternative energy.  They are also working hard on solar energy projects.