Almost every station on the factory floor of Commonwealth Fusion Systems’ northeast Massachusetts headquarters was bustling on a steamy Friday morning in June. Hard-hatted workers ferried along the components for the company’s first fusion reactor, including giant slabs of magnets that will eventually be joined…

Nuclear giant Holtec International is betting big that its 300-megawatt small modular reactors are the future of atomic energy. On Friday, the Florida-headquartered firm filed paperwork with the Securities and Exchange Commission in order to sell shares in the company on the Nasdaq. Across hundreds of pages, the…

Up until recently, the U.S. was in a yearslong dry spell in the construction of new nuclear power plants. The hiatus finally ended in April , when two next-generation nuclear developers broke ground on their debut plants. Though those facilities will take years to finish, the next reactor set to patch onto the U.S.…

As the U.S. looks to revive its stagnant nuclear industry, a group of companies is racing to realize the promise of a “meltdown-proof” fuel that for decades has struggled to progress beyond federal lab experiments. Tri-structural isotropic fuel, known as TRISO, is safer and more stable than the fuel rods used by the…