China's three biggest power firms emit more carbon than Britain,

China's three biggest power firms produced more greenhouse gas emissions last year than the whole of Britain, according to a Greenpeace report published today.

The group warned that inefficient plants and the country's heavy reliance on coal are hindering efforts to tackle climate change. While China's emissions per capita remain far below those of developed countries, the country as a whole has surpassed the United States to become the world's largest emitter.

Greenpeace said the top 10 companies, which provided almost 60% of China's total electricity last year, burned 20% of China's coal — 590m tonnes — and emitted the equivalent of 1.44 billion tonnes of carbon dioxide