Fusion moves into financed demonstration and defense-partnership phase

Commonwealth Fusion Systems raised $1 billion for SPARC, with Hyundai Motor participation, a 2027 net-energy target, and ARC commercialization work including a reported 400-MW design and PJM interconnection preparation. Pacific Fusion is pursuing a pulsed-power demonstration around 2030 with NNSA cooperation, while RTX invested in Xcimer; industrial and strategic backing is growing, but usable net electricity, maintenance, cost, and schedules remain unresolved.