As China commits to peaking carbon emissions before 2030, the conversation moves beyond renewables alone. This research from top Chinese institutions models a practical, high-impact pathway: converting the country’s existing coal-fired power plants to nuclear reactors. The implications for global energy policy—and the pace of decarbonisation—are considerable.
Chinese scientists from Tsinghua University and other leading institutes have published a timely analysis in the journal Engineering on the role of coal-to-nuclear (C2N) conversion in decarbonising China’s electricity system. The study, led by Daiwei Li and colleagues, provides a rigorous, system-level assessment of a strategy that is gaining traction internationally but faces a particularly high-stakes test in the world’s largest coal consumer. Rather than treating nuclear and coal as separate pillars of the energy mix, the paper examines the technical and economic feasibility of physically repurposing existing coal plant sites—including their grid connections, cooling infrastructure, and skilled workforces—for advanced nuclear reactors.
The research arrives at a critical inflection point. China’s electricity grid remains heavily coal-dependent, even as renewable capacity expands at an unprecedented scale. The authors argue that C2N conversion offers a unique bridge: it preserves the firm, dispatchable power that renewables cannot yet fully replace, while eliminating the carbon emissions. The analysis moves beyond technical feasibility, embedding the conversion strategy within China’s broader institutional and policy frameworks for electricity system decarbonisation. It quantifies the potential emissions reductions, the capital cost trade-offs relative to building new nuclear on greenfield sites, and the grid-balancing benefits. The findings suggest that C2N, if implemented at scale, could achieve substantial emission cuts more rapidly and at lower grid-integration cost than an exclusively renewables-plus-storage pathway, because it leverages existing assets.
For global energy professionals, the study provides a data-rich roadmap for one of the most industrialised decarbonisation strategies under consideration. It reframes the nuclear debate: not as an alternative to renewables, but as a synergistic partner that can accelerate coal phase-out without sacrificing grid reliability. The paper’s significance lies in its integration of engineering, economics, and policy analysis for a country whose electricity sector accounts for over 40% of its total carbon emissions.
Why it matters:
This research provides a quantified framework for one of the most practical yet underexplored pathways to deep decarbonisation in China. For policymakers and investors in energy infrastructure, C2N conversion represents a lower-cost, faster-to-deploy alternative to greenfield nuclear projects, while directly addressing the stranded-asset risk faced by coal plant owners. The study’s institutional analysis also offers a lens for understanding how China may balance its dual imperatives of energy security and carbon neutrality.
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