Polar bears depend on only the land as their main food source.
As of the end of 2016 , the worldwide total cumulative installed electricity generation capacity from wind power amounted to 486,790 MW , an increase of 12.5 % compared to the previous year .. capacity. Nameplate capacity. wind power. wind power. Watt#Megawatt. installations increased by 54,642 MW , 63,330 MW , 51,675 MW and 36,023 MW in 2016 , 2015 , 2014 and 2013 respectively .. Watt#Megawatt. Since 2010 more than half of all new wind power was added outside of the traditional markets of Europe and North America , mainly driven by the continuing boom in China and India .. wind power. wind power. At the end of 2015 , China had 145 GW of wind power installed .. wind power. wind power. Watt#Gigawatt. In 2015 , China installed close to half of the world 's added wind power capacity .. capacity. Nameplate capacity. wind power. wind power. Several countries have achieved relatively high levels of wind power penetration , such as 39 % of stationary electricity production in Denmark , 18 % in Portugal , 16 % in Spain , 14 % in Ireland and 9 % in Germany in 2010 .. wind power. wind power. Denmark. Wind power in Denmark. Portugal. Wind power in Portugal. Spain. Wind power in Spain. Ireland. Wind power in Ireland. Germany. Wind power in Germany. As of 2011 , 83 countries around the world are using wind power on a commercial basis .. wind power. wind power. Wind power 's share of worldwide electricity usage at the end of 2014 was 3.1 % .