Wind power was Spain's top source of electricity in 2013: Remarkable new figures from Spain's grid operator have revealed that greenhouse gas emissions from the country's power sector are likely to have fallen 23.1% last year, as power generation from wind farms and hydroelectric plants soared.

Surge in wind power and hydropower drives emissions down by more than 23%, reports BusinessGreen

http://www.theguardian.com/environment/2014/jan/06/wind-power-spain-electricity-2013