Based in Spain , Iberdrola is also the world 's largest producer of wind energy . American reported a 10 % fall in net profits in Spain for 2001 despite heavy investment . Galan , boss of Spain 's largest energy company , said European governments are over-taxing the industry because they believe utility businesses are `` too rich . '' Spain -- where Iberdrola is headquartered -- is the eurozone 's second -largest economy .
Based in Spain , Iberdrola is also the world 's largest producer of wind energy . American reported a 10 % fall in net profits in Spain for 2001 despite heavy investment . Spain -- where Iberdrola is headquartered -- is the eurozone 's second -largest economy .