MARVEL at INL to demonstrate sodium‑potassium cooled microreactor and serve as industry test bed
September 18, 2026 | Idaho National Laboratory, Office of Science, Department of Energy (DOE), Executive, Federal
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Presenter described MARVEL as an "85 kilowatt sodium potassium cooled microreactor" intended to demonstrate advanced control systems, primary coolant approaches and control software, and to serve as a pathfinder and test bed for end users and benchmarking tools.
Speakers said MARVEL's demonstration will provide industry and investors with confidence that microreactors can be built and operated, and that lessons from MARVEL will be shared with commercial developers to accelerate subsequent demonstrations and deployments.
Speakers said MARVEL's demonstration will provide industry and investors with confidence that microreactors can be built and operated, and that lessons from MARVEL will be shared with commercial developers to accelerate subsequent demonstrations and deployments.
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