There is wind energy in abundance to power the needs of the world with near zero emission electric power several times over according to two scientific studies just published. The world currently utilizes about 18TW (TerraWatts) of power. One study led by Kate Marvel identified that the lower geophysical limits for energy harvested from surface turbines (supported on towers on land and sea) was over 400TW. If turbines could be flown by kites to capture the more reliable high altitude winds, more than 1,800TW of power could potentially be extracted throughout the atmosphere.
The authors warn that extracting wind energy near the upper physical limits would have substantial climate effects on temperature and precipitation. But at current global demand and as long as turbines were spread out and not clustered in a few regions the climate impact on surface temperatures would be about 0.1 degree Celsius warming and a decrease in global average precipitation by about 1%.