Uploaded April 2025 | Updated September 2026, 3 weeks ago
Greg Piefer ’99, MS’04, PHD’06 is the founder and CEO of SHINE Technologies, a leader in next-generation fusion solutions. Greg has a PhD in nuclear engineering and engineering physics with a minor in medical physics, and a BS in physics and electrical and computer engineering from the University of Wisconsin–Madison. An accomplished inventor with multiple patents, he received UW’s Engineering Early Career Award.
With two decades of experience in advancing growth-stage technology companies, Greg’s mission is to commercialize scientific breakthroughs that serve society and improve the world. Founded in 2005, SHINE is a UW–Madison spinout helping to make Wisconsin a global hub for fusion energy research and commercialization as well as for the precision medicine field of theranostics. With a unique phased approach, SHINE leverages fusion technology to address urgent needs in healthcare and industry while progressing toward clean, sustainable fusion energy.
Headquartered in Janesville, Wis., SHINE now employs 300 people, producing medical isotopes and developing solutions for nuclear waste recycling, all while moving toward commercialization of fusion energy.
Greg Piefer ’99, MS’04, PHD’06 is the founder and CEO of SHINE Technologies, a leader in next-generation fusion solutions. Greg has a PhD in nuclear engineering and engineering physics with a minor in medical physics, and a BS in physics and electrical and computer engineering from the University of Wisconsin–Madison. An accomplished inventor with multiple patents, he received UW’s Engineering Early Career Award.
With two decades of experience in advancing growth-stage technology companies, Greg’s mission is to commercialize scientific breakthroughs that serve society and improve the world. Founded in 2005, SHINE is a UW–Madison spinout helping to make Wisconsin a global hub for fusion energy research and commercialization as well as for the precision medicine field of theranostics. With a unique phased approach, SHINE leverages fusion technology to address urgent needs in healthcare and industry while progressing toward clean, sustainable fusion energy.
Headquartered in Janesville, Wis., SHINE now employs 300 people, producing medical isotopes and developing solutions for nuclear waste recycling, all while moving toward commercialization of fusion energy.
