Join us on February 23 at 3:30 p.m. for this Sustainable Energy Seminar presentation by Adrien Couet, Professor of Nuclear Engineering and Engineering Physics at UW-Madison.

Abstract

Molten salt reactors (MSRs) are attracting renewed attention as a potential next-generation nuclear technology that could complement renewables and help decarbonize both electricity and high-temperature industrial heat. In this talk, I will introduce the basic concept of salt-based reactors, how molten salts can serve as coolants, and in some designs, as the fuel carrier, enabling high-temperature, low-pressure operation with distinctive safety characteristics. Building from the historical Molten Salt Reactor Experiment (MSRE) and today’s leading design directions (thermal-spectrum fluoride systems, solid-fueled fluoride high-temperature reactors, and fast-spectrum chloride systems), I will discuss what problems MSRs aim to solve (efficiency, fuel utilization, waste management, and flexibility for modern grids) and what remains challenging. A key focus will be the “materials reality” behind MSRs: corrosion, redox control, fission product chemistry, and qualification of structural materials, all of which shape feasibility, reliability, and licensing. I’ll close with a balanced view of where MSRs may fit in a sustainable energy portfolio and the major R&D milestones needed to move from promise to deployment.

Registration

This event is offered online only through Zoom Webinar. Registration is required through Zoom. Click here to register for this and all other webinars as part of the Sustainable Energy Seminar series in Spring 2026.