Specifically, the industrial output of manufacturing increased by about 3.1 percent last year, according to the ministry.

In the first 11 months of last year, the country's iron ore imports dipped 2.1 percent year-on-year to around 1.02 billion metric tons, he said.

The bureau predicted that whole-year coal output is expected to surpass 1.3 billion tons.

Rooftop solar gear, biomass heating, pumped-storage hydroelectricity among tech on rise.

Average monthly output of coal produced by the company has been around 50 million tons during the past 15 months, he added.

Increase of clean energy seen as key to achieving nation's carbon goals.

China produced some 4.45 billion tons of coal last year, up 8 percent year-on- year.

The figure includes 30 million tons of crude oil and more than 5.5 billion cubic meters of natural gas, according to Daqing Oilfield.