Dr. Scott Hsu is a Senior Advisor in Fusion Energy Sciences in the Office of Science at the U.S. Department of Energy (DOE). From 2022 until Jan. 2025, he was Senior Advisor and Lead Fusion Coordinator in the DOE Office of the Under Secretary for Science and Innovation, where he coordinated DOE-wide fusion strategy and led a crosscutting team to accelerate fusion commercialization in partnership with the private sector. Previously (2018–2022), Scott was a Program Director at ARPA-E, where he formulated and led its fusion research portfolio. Prior to ARPA-E, Scott was a research scientist at Los Alamos National Laboratory (2002–2019), where he led experimental research spanning magnetic, magneto-inertial, and inertial confinement fusion. Scott is author or co-author of 85+ peer-reviewed publications, a Fellow of the American Physical Society (APS), and a co-recipient of the 2002 APS Award for Excellence in Plasma Physics Research. Scott has testified as an expert witness in three Congressional hearings on fusion energy (2016, 2022, 2023). He earned a Ph.D. in Astrophysical Sciences (Program in Plasma Physics) from Princeton University and a B.S summa cum laude in Electrical Engineering from UCLA.