Nvidia, Google, and Bill Gates help Commonwealth Fusion Systems raise $863M

Commonwealth Fusion Systems (CFS), a Massachusetts-based fusion power startup, has raised $863 million in a recent funding round from a diverse group of investors including Nvidia, Google, Breakthrough Energy Ventures, and Bill Gates, among others. This latest investment brings CFS’s total funding to nearly $3 billion since its founding. The company aims to accelerate the commercialization of fusion energy, moving beyond the concept stage to industrial-scale deployment. Fusion power, which generates energy by fusing atoms under extreme heat and pressure to create plasma, has long been seen as a potential source of nearly limitless clean energy, but only recently has attracted significant investor interest due to advances in research and technology. CFS is currently developing a prototype fusion reactor called Sparc, a tokamak device designed to achieve scientific breakeven—where the fusion reaction produces more energy than it consumes—by 2027. Although Sparc will not supply power to the grid, it is a critical step toward validating the technology and understanding the