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2026 Nuclear Energy Conference & Expo (NECX)
August 24–27, 2026
Dallas, TX|Hilton Anatole
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Valar’s Ward 250 reaches criticality in Utah
El Segundo, Calif.–based start-up Valar Atomics has taken its Ward 250 test reactor critical at the Utah San Rafael Energy Lab (USREL), becoming the second company in the Department of Energy's Reactor Pilot Program to reach the milestone, and, according to the DOE, the first to do so outside a national laboratory.
The DOE celebrated the achievement in a June 18 announcement, describing it as a "zero-power fueled criticality demonstration." The news follows a similar update for Antares Nuclear's Mark-0 reactor, which the DOE said achieved criticality at Idaho National Laboratory earlier this month.
NUCLEAR AND EMERGING TECHNOLOGIES FOR SPACE (NETS-2025) PLENARY SPEAKER
Marsha McDaniel serves as the Director of International Engagement at Idaho National Laboratory. In her current role, she is responsible for expanding the lab’s international collaborations and helping to maintain U.S. leadership in the energy sector.
McDaniel previously served as a United States diplomat with the U.S. Department of Commerce. Her diplomatic assignments included the U.S. Embassy in Beijing, China, the U.S. Consulate in Hong Kong, China, and the U.S. Consulate in Mumbai, India. McDaniel received numerous awards and honors during her diplomatic service, including a Meritorious Honor Award from the U.S. Department of State.
A longtime advocate for advancing women in the workplace, McDaniel currently serves as Chair of Idaho Women in Nuclear, a nonprofit organization with the goal of positioning the U.S. for the future of nuclear energy through the advancement of women. She is also a 2024-2025 Leadership Fellow with the International Women’s Forum.
McDaniel’s civic leadership includes service on the City of Idaho Falls Planning and Zoning Commission and the Board of Trustees of the Idaho Technology Council.
A first-generation college graduate, McDaniel earned her A.A. at De Anza Community College. She earned her B.A. in International Affairs from George Washington University and her M.A. in Government from Johns Hopkins University. She studied Mandarin Chinese at the U.S. Department of State Foreign Service Institute.
Last modified March 26, 2025, 8:58am CDT