A sound revival after a weak 2010, and renewed momentum for the wind industry in 2011, are the conclusions reached by the World Wind Energy Association (WWEA) in its half-year report. Worldwide wind capacity reached 215,000 MW by mid-2011, out of which 18,405 MW were added in the first six months. This increase represents 15 percent more than in the first half of 2010, when only 16,000 MW were added, WWEA says.