In 2012 , it was overtaken by California 's 1,020 - MW Alta Wind Energy Center .
At the time of its completion , it was the largest wind farm in the world , surpassing the nearby 735.5 - MW Horse Hollow Wind Energy Center .
In 2012 , wind farm was overtaken by California 's 1,020 - MW Alta Wind Energy Center .
At the time of its completion , it was the largest wind farm in the world , surpassing the nearby 735.5 - MW Horse Hollow Wind Energy Center .