The World's Biggest Fusion Reactor Just Hit a Milestone | OilPrice.com Haley Zaremba Haley Zaremba is a writer and journalist based in Mexico City. She has extensive experience writing and editing environmental features, travel pieces, local news in the… More Info Premium Content By Haley Zaremba - May 06, 2026, 4:00 PM CDT The final components of ITER's central solenoid magnet -- a 59-foot, 3,000-tonne superconducting system 15 years in the making -- have arrived in France, clearing a major path toward first plasma. ITER will never supply electricity to the grid; it exists purely as a research tool, and at...