In the West, many nuclear advocates have pinned their hopes for a nuclear renaissance on Small Modular Reactors, or SMRs. SMRs range from a potentially faster way for nuclear nations to build more plants; to a way for countries to start their nuclear power programs; to special application power sources that serve specific country needs, such as those under development in Russia and China. Yet-to-be-built SMR designs make a lot of bold promises. A question looming over the nuclear industry is: will they fulfill those promises?

In this episode, I am joined by Tony Roulstone, a lecturer in nuclear engineering at the University of Cambridge with 10 years of experience as a nuclear engineer at Rolls Royce, which is currently developing its own SMR. We discuss the “secret sauce” of past successful nuclear buildouts; the necessity of state funding; failures of economic policy for long-term infrastructure; the true meaning of modular construction; the trade-off between small modular construction and economies of scale; the minimum order sizes for companies like Rolls Royce to actually begin manufacturing their SMRs (10 GW); the different types of SMRs; and the current status of SMR development around the world. The result is a detailed and sober conversation on the benefits, drawbacks, and challenges of SMRs.

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