Environmental Finance: China is both investing heavily in a low-carbon economy at home, and building substantial clean energy export industries, according to a new report from The Climate Group. Although the country has become the world’s largest emitter of greenhouse gases, recently overtaking the US, it is also now the world’s largest generator of power from renewable sources, based on installed capacity. It is also investing almost as much in green power, as a percentage of GDP, as world leader Germany, …