Age: SOONER or later, some anti-privatisation activist will start doing background checks on China Huaneng Group, which is at the front of the queue to bid for $15 billion in NSW power assets. They’ll see that Sydney might soon be powered by the world’s biggest corporate contributor to global warming. What’s more, according to the company’s own glossy hand-outs, Huaneng is “a red company that strives to serve the socialist economy with Chinese characteristics”. It is a polluting, …