Scientists familiar with China’s fusion facilities said that if it continues its current pace of spending and development, it will surpass the U.S. and Europe’s magnetic fusion capabilities in three or four years.

The Chinese Academy of Sciences’ Institute of Plasma Physics in the eastern Chinese city of Hefei in 2018 broke ground on a nearly 100-acre magnetic fusion research and technology campus. The facility is expected to be completed next year but is already largely operational and focused on industrializing the technology.