TerraPower

TerraPower, LLC
Company typePrivate
IndustryNuclear power
Founded2006
FounderBill Gates
Headquarters,
United States
Key people
  • Bill Gates (Chairman)
  • Nathan Myhrvold (Vice Chairman)
  • Chris Levesque (President & CEO)
ProductsNatrium Sodium-Cooled Fast Reactor, Molten Chloride Fast Reactor, Traveling wave reactor
Websitewww.terrapower.com

TerraPower, LLC is an American nuclear reactor design and development engineering company headquartered in Bellevue, Washington.

TerraPower is developing multiple designs of fast-neutron reactors, including a sodium-cooled fast reactor (SFR) and a molten-salt reactor. As of 2026, the company is constructing its Natrium SFR design in Kemmerer, Wyoming as the Kemmerer Power Station.