Back in October, Westinghouse pulled the eVinci microreactor from the Saskatchewan Research Council, which had been planning on building the first eVinci microreactor. The reason? It turns out the US military under Trump has more money than the SRC. Who woulda thunk it?

Keep that in mind as you watch Dr. Chris Keefer and Dr. Jeff Waksman, Principal Deputy Assistant Secretary of the Army for Installations, Energy and Environment, explain how the U.S. Army is making a second attempt at making microreactors great again. The discussion situates the Janus microreactor program in the long history of the Army Nuclear Power Program and Project Pele, highlighting why earlier small reactor deployments failed to compete with diesel and grid power even in extreme environments, and why Janus represents a fundamentally different approach. Janus is best understood as an attempt to apply the Commercial Orbital Transportation Services model to nuclear energy, using milestone-based funding, hard downselects, and vendor replaceability to subsidize learning rather than electricity sales. The conversation explores the severe economic constraints facing one to ten megawatt reactors, the limits of the SpaceX analogy, and the unglamorous but decisive challenges of fuel logistics, waste removal, and slow nuclear learning cycles that will ultimately determine whether microreactors can ever move beyond demonstration and into durable military let alone commercial service.

 

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