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Conference Spotlight
2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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Getting back to yes: A local perspective on decommissioning, restart, and responsibility
For 45 years, Duane Arnold Energy Center operated in Linn County, Ia., near the town of Palo and just northwest of Cedar Rapids. The facility, owned by NextEra Energy, was the only nuclear power plant in the state.
In August 2020, a historic derecho swept across eastern Iowa with winds approaching 140 miles per hour. Damage to the plant’s cooling towers accelerated a shutdown that had already been planned, and the facility entered decommissioning soon after, with its fuel removed in October of that year. Iowa’s only nuclear plant had gone off line.
Today the national energy landscape looks very different than it did just six short years ago. Electricity demand is rising rapidly as data centers, artificial intelligence infrastructure, advanced manufacturing, and electrification expand across the country. Reliable, carbon-free baseload power has become increasingly valuable. In that context, Linn County has approved the rezoning necessary to support the recommissioning and restart of Duane Arnold and is actively supporting NextEra’s efforts to secure the remaining state and federal approvals.
Technical Session|Radioisotope Power Systems
Tuesday, May 7, 2024|3:15–4:55PM MDT|Sweeney A
Session Chair:
Gabrielle Lee (LANL)
Alternate Chairs:
Timothy Schriener (Univ. New Mexico)
Session Organizer:
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Zeno Technology Development Program Overview
3:15–3:40PM MDT
J.R. Matthews (Zeno Power Systems)
Paper
Revival and Technology Transfer of 90SrTiO3 Production for Heat Source Applications
3:40–4:05PM MDT
Christofer E. Whiting (Univ. Dayton), Matthew O'Hara (PNNL), Stephen L. Gunderson (Univ. Dayton), Sergey Sinkov (PNNL), Chadwick D. Barklay (Univ. Dayton), Jeffrey Katalenich (PNNL), Brian Collins (PNNL), Jacob R. Matthews (Zeno Power Systems)
Radiation Modeling of Z1: Validation of a Novel Radioisotope System
4:05–4:30PM MDT
T.R. Riley (Zeno Power Systems), J.R. Matthews (Zeno Power Systems), M.T. Athon (PNNL), B.A. Collins (PNNL), K.L. Gervais (PNNL), J.A. Katalenich (PNNL), D.A. Koch (PNNL), M.K. Murphy (PNNL), M.J. O'Hara (PNNL), C.L. Painter (PNNL), B.D. Pierson (PNNL), S.H. Swenson (PNNL)
Radioisotope Power System Isotopes Review
4:30–4:55PM MDT
James Bunsen (Zeno Power Systems), Harsh S. Desai (Zeno Power Systems), Jacob Matthews (Zeno Power Systems), Patrick Snouffer (Zeno Power Systems)
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