The global race to commercialize small modular reactors is increasingly becoming a contest over industrial supply chains and geopolitical influence rather than reactor technology alone.
As countries across the Indo Pacific prepare to expand nuclear generation, the United States, Japan, and South Korea have formalized a framework for cooperation that signals an effort to build a coordinated alternative to the nuclear ecosystems established by China and Russia.
The three countries recently signed a memorandum of cooperation on small modular reactor deployment during a meeting of their foreign ministers on the sidelines of the NATO summit in Ankara, Turkey. According to South Korea’s Ministry of Foreign Affairs, the agreement establishes a governmental framework to support the three nations’ nuclear industries in jointly pursuing SMR opportunities, beginning with markets across the Indo Pacific.
The choice of region reflects where much of the anticipated growth in nuclear demand is expected to occur. Countries including Indonesia, Thailand, Vietnam, and Singapore are evaluating or preparing for SMR deployment as they seek firm, low carbon electricity generation capable of supporting economic growth while reducing dependence on fossil fuels. Indonesia has already initiated cooperation with the United States and Japan on nuclear development planning, making it a potential early market for the partnership.
While the agreement focuses on commercial cooperation, it also reflects broader strategic considerations. Russia and China have significantly expanded their presence in international nuclear markets by offering integrated packages that combine reactor technology, financing, fuel supply, construction, and long term operational support. These comprehensive offerings have strengthened both countries’ geopolitical influence while securing decades long commercial relationships with importing nations.
Russia’s state owned Rosatom remains one of the world’s largest exporters of nuclear technology, providing reactor construction, nuclear fuel, spent fuel management, and related services. China has likewise accelerated the localization of its nuclear supply chain, with estimates indicating that domestic manufacturers now provide the overwhelming majority of components for its reactor fleet. Beijing is also moving toward deployment of what could become the world’s first commercial small modular reactor, further strengthening its position in the emerging SMR market.
The trilateral partnership seeks to leverage complementary industrial strengths rather than duplicate capabilities. The United States leads in several advanced SMR reactor designs through companies such as TerraPower, NuScale Power, and X energy, although commercial deployment has progressed more slowly than originally anticipated. Japan maintains a sophisticated manufacturing base for nuclear components despite scaling back domestic nuclear expansion following the Fukushima accident in 2011. South Korea, meanwhile, has developed a reputation for delivering large nuclear projects on schedule and within budget, supported by decades of continuous reactor construction since commissioning its first commercial reactor in the late 1970s.
By combining American reactor technology, Japanese manufacturing expertise, and South Korean engineering and construction capabilities, the three governments aim to establish competitive supply chains capable of challenging rival exporters. Standardizing technologies and project delivery models could also improve financing conditions and reduce deployment risks for prospective buyers.
Market forecasts increasingly support the strategic importance of SMRs, although estimates vary widely depending on regulatory progress and commercialization timelines. Many industry projections anticipate that small modular reactors will account for a growing share of global nuclear capacity by mid century as countries seek flexible nuclear generation suitable for industrial facilities, remote communities, and grids that incorporate larger shares of renewable energy.
Beyond exports, the partnership may also influence long standing negotiations between Washington and Seoul over uranium enrichment and spent fuel reprocessing. South Korea has sought greater flexibility under its bilateral nuclear cooperation agreement with the United States to strengthen domestic nuclear fuel security.
Commercial SMR deployment is expected to increase demand for high assay low enriched uranium, or HALEU, a specialized fuel required by many advanced reactor designs currently under development. Expanding global HALEU production has become a strategic priority as existing supply remains limited and historically dependent on Russian production capacity.
Although the newly signed memorandum does not directly address uranium enrichment, closer cooperation on reactor deployment and nuclear supply chains could strengthen South Korea’s position in future discussions with Washington. South Korean officials have suggested that demonstrating the country’s value as a trusted partner in advanced nuclear technologies may help build confidence for broader cooperation on fuel cycle capabilities.
