ThePrint ThePrintPod: India didn’t just advance its nuclear programme. Here’s a less talked-about breakthrough
Apr 9, 2026
A deep dive into India's recent nuclear milestones and the quieter fuel breakthrough shifting the landscape. The conversation traces the three‑stage thorium strategy and decades of indigenous reactor development. It highlights technical hurdles in fast breeders and the promise of a new thorium‑uranium fuel. Strategic, regulatory and scaling questions about commercialization and exports are also explored.
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India's Three Stage Nuclear Vision
- India designed a three-stage nuclear plan to convert its thorium advantage into long-term energy independence.
- First PHWRs produce plutonium, FBRs breed more fissile material and stage three aims for thorium-uranium reactors for centuries of fuel.
How Sanctions Forced India's Nuclear Self-Reliance
- India's early PHWR fleet rose after Canadian support collapsed post-1974 tests, forcing indigenous capability.
- By early 2000s India had PHWRs producing plutonium stocks, but breeder scaling remained elusive and delayed.
PFBR Criticality Marks A Technical Milestone
- The PFBR reached criticality in April 2026 after long delays, marking mastery of sodium-cooled fast breeder tech.
- It uses MOX fuel and liquid sodium and places India alongside Russia in operating large-scale sodium fast breeders.