TerraPower Isotopes Breaks Ground on World's Largest Actinium-225 Manufacturing Facility in Philadelphia

TerraPower Isotopes breaks ground in Bellwether District

Philadelphia officials broke ground Wednesday on a project that will turn an old refinery into a lab that creates materials for cancer treatments.

TerraPower Isotopes Breaks Ground on World's Largest Actinium-225 Manufacturing Facility in Philadelphia

$450 million East Coast flagship cGMP facility will increase Ac-225 production capacity twentyfold, supporting the next generation of cancer therapies

Bill Gates’ nuclear company broke ground on $450 million plant in Philly’s Bellwether District to make radioactive cancer medicine

TerraPower Isotopes, a subsidiary of a nuclear energy company founded by Bill Gates, is expected to employ 225 people at the site when it is fully operational in 2029.

TerraPower Isotopes Breaks Ground on $450 Million Bellwether Laboratory in South Philadelphia

TerraPower Isotopes (TPI), a subsidiary of Bill Gates-founded nuclear innovation company TerraPower, broke ground on 6 May 2026 on the Bellwether Laboratory, its flagship actinium-225 (Ac-225) manufacturing facility in South Philadelphia’s Bellwether District. The 250,000-square-foot current Good Manufacturing Practices (cGMP) facility represents a $450 million private investment and is being developed as a build-to-suit lease […] The post Terra…