China has built the world's largest network of charging facilities for electric vehicles, as one million charging stations had been completed by the end of June, an official said Thursday.

The country has been promoting clean and low-carbon energy, and the proportion of non-fossil energy in electricity generation continues to rise, said Li Fulong, head of the development and planning office of the National Energy Administration, at a press conference.

Non-fossil energy accounted for 37.2 percent of the country's installed 6,000-kilowatt and above generating units by the end of June, up 1.2 percentage points over the same period last year, he said.

Non-fossil energy accounted for 27.3 percent of electricity generation, up 2.1 percentage points from the same period last year, he said.

To optimize the clean energy sector, China has launched a national monitoring and warning platform for new energy consumption, to monitor new energy consumption at the provincial level on monthly basis, assess new energy consumption on quarterly basis and issue warnings on annual basis, Li said.