Business Green: Longyuan Power Group, already China’s biggest wind power producer, is reportedly planning to invest around 92 billion yuan (£8.9bn) on developing clean energy over the next five years. Speaking in an interview with news agency Bloomberg yesterday, company president Xie Changjun said the Hong Kong-listed company aims to install at least 16GW of wind turbines in China and overseas by 2015. "China so far has used only about one per cent of its total estimated wind power resources …