TechCrunch lists fusion start-ups that have each secured more than $100 million in private capital, reflecting rising investor confidence that fusion energy could eventually provide abundant low-carbon power. The sector’s momentum has been helped by advances in computing, AI and high-temperature superconducting magnets, alongside a 2022 US laboratory result that achieved scientific breakeven.

– Commonwealth Fusion Systems has raised $3.94 billion, including a $1 billion round completed in July; it expects its Sparc tokamak in Massachusetts to target scientific breakeven in 2027.
– CFS plans a 400-megawatt commercial plant, Arc, near Richmond, Virginia, later this decade; Google has agreed to purchase half its electricity output.
– Helion, based in Everett, Washington, aims to generate electricity in 2028 for Microsoft using a field-reversed-configuration reactor.