China is continuing to drag itself off coal—the dirty energy source that has made it the world’s biggest greenhouse gas emitter. Figures published Sunday night by China’s National Bureau of Statistics showed coal consumption dropping 3.7 percent in 2015, marking the second year in a row that the country has slashed coal use and greenhouse gas emissions.

To put that in perspective, Greenpeace East Asia says China’s drop in coal use over the past two years is equal to Japan’s total annual coal consumption—a trend the environmental group says could “far surpass” China’s commitments enshrined in the Paris climate deal reached in December. Last year, China’s carbon emissions dropped 1-2 percent, Greenpeace says, a decline the group attributes to both falling economic output from China’s heavy industries and an upswing in renewable energy use. China is widely expected to meet or surpass its goal of “peaking” emissions (the point at which the country begins to permanently reduce its greenhouse gas emissions) by 2030.

But the shift away from coal will also hit the country’s workers hard: The government plans to slash 1.8 million jobs in the steel and coal industries—about 15 percent of the workforce in those sectors, according to Reuters. The government says it has a $15.27 billion plan over 10 years to relocate these workers.