SMRTR Science & EngineeringJun 18, 2025Interesting Engineering

Mini MARVEL: First US nuclear reactor in 50 years targets remote power and heat

SMRTR summary

The US Department of Energy's MARVEL project, a microreactor test bed, nears completion of its final design phase. This 85-kWth/20-kWe sodium-potassium cooled reactor at Idaho National Laboratory will allow integrated testing of advanced nuclear components and applications. MARVEL aims to accelerate microreactor development and demonstrate real-world uses, with operations expected to begin by early 2028.

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