Wind power on Gran Canaria

I spent time on the Canary Islands wondering about how you supply electricity to such isolated communities. We have such centralised power stations and a big grid. I'd have thought it would have been through renewables, but apparently not. Our guide on Gran Canaria quoted a figure of 3% of their electricity coming from wind power. That's despite this article that I found http://www.theguardian.com/environment/2014/jan/06/wind-power-spain-electricity-2013 which says that a lot of Spanish electricity now comes from renewables. But I loved the comment underneath the article from someone claiming that the turbines pictured above spend most of their time at rest! The Canaries are served by Trade Winds from the north east and the scirocco from the Sahara. These turbines are on the east side of the island so should be well positioned.