Zap Energy says its ultimate goal is safe, clean energy from fusion. To help get there, it’s starting to build fission ...

“We are now entering a new phase in the golden age of nuclear,” declared Michael Shanks, a U.K. energy minister, as he recently talked up the country’s plans to attract private investment in new ...

TerraPower, a Bill Gates–backed nuclear power start-up, received the federal green light to start building a power plant in Wyoming. The approval paves the way for the first new commercial nuclear ...

The company’s central bet is that shipyards—long accustomed to handling heavy steel at scale—can serve as efficient assembly factories.

The company will initially use natural gas generators at the site, then later install small reactors using a standardized construction model that can be repeated.

TerraPower’s project in Wyoming, which uses novel technology, is the first new commercial reactor to receive federal approval in nearly a decade. By Brad Plumer Reporting from Washington A novel type ...