Reuters: China will leap to be the top wind turbine producer in 2009, transforming an already fast-growing renewable energy sector, a leading wind power industry official said. Steve Sawyer, secretary general of the Global Wind Energy Council (GWEC), said wind could supply 12 percent of world electricity needs by 2020 against just over one percent in 2007 in a shift that would help curb climate change. "We’d expect that the domestic Chinese manufacturers will have an annual …