Nuclear startup TerraPower has selected Kemmerer, Wyoming, as its preferred site for its Natrium Reactor Demonstration Project, one of just two projects the federal government has chosen to help fund in support of advanced reactor development.

The Bill Gates-founded company and utility partner PacifiCorp announced the selection on Tuesday. Subject to final permitting, the nuclear plant will be built at the coal-fired Naughton Power Plant, whose two remaining coal units are scheduled to retire in 2025.