Which nuclear-energy company did Bill Gates co-found in 2006?

Bill Gates co-founded TerraPower, a nuclear-energy company, in 2006.

TerraPower was established to develop advanced nuclear-reactor technologies intended to improve safety, reduce waste, and provide reliable low-carbon electricity. Gates became one of the company’s principal investors and public advocates.

The company has researched several reactor concepts, including the traveling-wave reactor and the Natrium design. Its work is separate from Microsoft’s software business and from Gates’s climate-focused investment organization, Breakthrough Energy.

TerraPower is sometimes confused with established reactor manufacturers or utility companies. It is primarily an advanced nuclear-technology developer, not a conventional electric utility.