Inasmuch as it has acknowledged it has become the world's largest greenhouse gas emitter, China is deadset to nonetheless accelerate its actions to reverse its role to the decelerating state of the global weather phenomenon.

In a report by the independent Australian-based Climate Commission titled The Critical Decade: International Action on Climate Change released on Monday, it said China has halved its growth in electricity demand, dramatically increased its renewable energy capacity, and decelerated its emissions growth more quickly than expected.

"China is accelerating action," Tim Flannery, the co-author and a key figure at the Climate Commission, said.

Although China continues to be a heavy user of coal and other fossil fuels, its use of coal however has flatlined as it took "ambitious strides to add renewable energy to its mix," the study said.

In 2012, China expanded by 75 per cent its solar power capacity, on top of shelling out a more that $65 billion investment in clean energy, up 20 per cent from a year ago and by far greater and bigger than any other nation.

The amount of electricity generated from wind in 2012 was 36 per cent higher than 2011, the report said.

"After years of strong growth in coal use, this has begun to level off. They are beginning to put in place seven emissions trading schemes that will cover quarter of a billion people," Mr Flannery said.

Mr Flannery likewise urged Australia to take note of China's aggressive stance against climate change, it being the country's leading trading partner.

"China is vulnerable to a changing climate, but they are also motivated by reducing their air and water pollution and wanting to position themselves as the world's renewable energy leader," he said.

"Whatever the reason, the results speak for themselves. China is quickly moving to the top of the leader board on climate change."

The release of the report coincided as UN leaders gather in Bonn on Monday to again discuss global efforts to tackle climate change, as prelude to a possible new climate treaty that will be concluded by 2015 and take effect by 2020.

"This decade must set the foundations to reduce emissions rapidly to nearly zero by 2050. The earlier such action is under way the less disruptive and costly it will be."

"Globally emissions are continuing to rise strongly, posing serious risks for our society," the report said.