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

PHILADELPHIA, May 6, 2026 /PRNewswire/ -- TerraPower Isotopes® (TPI), part of TerraPower, a nuclear innovation company that advances transformative technologies across both energy and healthcare, broke ground today on its flagship Bellwether Laboratory—a 250,000-square-foot actinium-225 (Ac-225) manufacturing facility located in the Bellwether District of Philadelphia. The groundbreaking marks the next major milestone in TPI's journey to establish a state-of-the-art East Coast manufacturing presence dedicated to the production of one of the rarest and most medically promising isotopes to support the development of targeted alpha therapy and precision medicine.

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

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