March 28, 2018
El País
| Spain | renewables: wind
El Hierro, the furthest Canary island from mainland Spain, ran on 100% renewable energy for 18 straight days thanks to 5 2.2-MW wind turbines and 2 pumped hydro storage pools (for when the wind doesn't blow). Installed in 2014 for €82 million, the Gorona del Viento plant upped the green/diesel mix from 30/70 (2015) to 47/53 (2017).