New numbers show coal production has made a sharp rise in the first few months of 2017.

U.S. Department of Energy data says coal mining in the U.S. rose 19 percent in the first five months of this year – with coal production in China and India also up.

Analysts say policy shifts in China, India’s push to provide electricity to more of its poorest citizens and changes in U.S. energy markets are the reasons behind the turnaround.