India's pitch to US nuclear mission: Scale up capacity, small modular reactors key

📌 Summary:

• A high-powered American nuclear industry delegation was told by top Indian government functionaries of New Delhi's two clear objectives after the recent law opening up the nuclear sector: scale up nuclear power for base-load capacity, and progressively enter the manufacturing value chain of small modular reactors (SMRs).

• India will double down on its mainstay — pressurised heavy water reactors (PHWRs), based on heavy water and natural uranium, ranging from 220 MWe to 700 MWe — a technology India has mastered, while remaining open to external collaboration to scale up.

• Why imported reactors are a concern: light water reactors (LWRs), dominant worldwide and led by the US, Russia and France, carry high project costs and hence high per-unit power tariffs; foreign collaboration will largely be limited to SMRs for now, with India also exploring thorium fuel.

• Two risks of importing costly LWRs: stunting indigenous reactor design and production capacity, and high capital expenditure translating into high tariffs hard to absorb under Indian market conditions — the Jaitapur (Maharashtra) project has been in limbo over tariff and liability concerns, the latter addressed by the new amendments.

• India's external outreach is driven more by the need for capital than for technology; foreign funds, including West Asian sovereign funds, have shown early interest in part-financing the SMR scale-up.

• The US "executive mission", organised by the Nuclear Energy Institute and the US-India Strategic Partnership Forum, met Union Power Minister Manohar Lal and Finance Minister Nirmala Sitharaman, and is meeting private players (Reliance, Adani, Tata Power, JSW Energy, Vedanta, L&T and others) in Mumbai.

• Parliament passed the nuclear energy law in December; several US firms have secured "specific authorisations" under the restrictive 10CFR810 regulation, permitting conditional transfer of nuclear technology to Indian entities.

🎯 UPSC Relevance: GS3 Science & Technology — India's civil nuclear programme, indigenisation versus import of reactor technology, SMRs, and energy security through the recently liberalised nuclear sector.

📝 Prelims Facts:

• PHWRs use heavy water as moderator and natural uranium as fuel; India operates PHWRs ranging from 220 MWe to 700 MWe.

• LWRs (pressurised water reactors) are the dominant global reactor type, led by the US, Russia and France.

• SMRs (small modular reactors) are factory-built, scalable reactors seen as key to keeping nuclear power commercially competitive.

• "10CFR810" is a US regulation restricting transfer of nuclear technology; "specific authorisations" allow conditional transfers to Indian entities.

🔑 Key Term: "Small Modular Reactor (SMR)" — a compact, factory-fabricated nuclear reactor of lower capacity that can be deployed in modules, offering lower upfront cost and faster, more flexible scaling than large conventional reactors.