Small Modular Reactors (SMRs) are advanced nuclear fission reactors characterized by their compact size, modular construction, and factory fabrication, making them easier and quicker to build than traditional large-scale reactors. They typically employ scaled-down versions of proven light-water reactor technology, utilizing water as both coolant and neutron moderator. Companies such as NuScale Power, Rolls-Royce SMR, and GE-Hitachi are leading the charge in SMR development. The technology is currently nearing early commercialization, with NuScale's Power Module design having received certification from the U.S. Nuclear Regulatory Commission (NRC) in 2020. This allows for their first module deployment planned by 2029 in Idaho. SMRs offer greater flexibility, lower upfront capital costs, and suitability for smaller grids compared to gigawatt-scale conventional nuclear plants.
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Why It Matters
The high cost and long construction times of conventional nuclear plants hinder their role in decarbonizing global energy, a market projected to reach $11.7 trillion by 2027. SMRs promise to de-risk nuclear power, enabling widespread deployment in diverse locations, from replacing retiring coal plants to powering remote communities and industrial sites. Utilities and heavy industries stand to gain from reliable, emissions-free power, while large-scale fossil fuel generators could face increased competition. Key challenges include establishing robust supply chains for modular manufacturing and harmonizing international regulatory standards. The first commercial deployments are expected by the late 2020s, with significant growth in the 2030s, spearheaded by the US, UK, and Canada. A lesser-considered consequence is the revitalization of regional manufacturing economies as factories produce and assemble these modular units, creating new skilled jobs.
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