Global wind energy capacity reached 456 GW at the half-year mark of 2016, and is set to hit 500 GW by the end of the year, according to new figures from the World Wind Energy Association. Published this week, the World Wind Energy Association (WWEA) released its half-year report, revealing that 21 GW of new wind installations were completed during the first half of the year, bringing the global cumulative total up to 456 GW.…