In the early 2000s, budget cuts to domestic fusion research forced U.S. universities to halt work on new machines and send researchers to learn on other country's machines, including China's.
"Instead of building new ones, we went to China and helped them build theirs, thinking, 'Oh, that'd be great. They'll have the facility. We'll be really smart,'" said Bob Mumgaard, co-founder and CEO of Commonwealth Fusion Systems. "Well, that was a big mistake."
China now has more fusion patents than any other country, and 10 times the number of doctorates in fusion science and engineering as the U.S., according to a report from Nikkei Asia.
"There's a finite labor pool in the West that all the companies compete for," Binderbauer said. "That is a fundamental constraint."
Commonwealth Fusion Systems SPARC tokamak being assembled in December 2024 in Devens, Massachusetts, is scheduled to use superconducting magnets to reach fusion ignition in 2027.