Fortune: The $10 Billion Solution to Climate Change

The technologies vary. Terrestrial Energy is using a molten salt technology, which allows for a simpler and safer cooling system. Bill Gates’ TerraPower is a traveling wave reactor that runs on spent fuel. Nuscale uses light water technology but its plants will be modular—think backyard nukes. Josh Freed, vice president of the clean energy program at the non-profit Third Way, said: “We already have $1 billion in private capital invested in 50 advanced nuclear companies.” Freed also pointed out that legislation is moving through Congress to help streamline the permitting process for the technology.