For India, a nuclear breakthrough amid energy concerns
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Context
On April 6, 2026, India's 500 MWe (PFBR) at Kalpakkam achieved its first criticality, marking India's official entry into the second stage of its three-stage nuclear power program. This indigenous scientific milestone coincides with the recent enactment of the , which opens the domestic nuclear energy sector to private participation, aiming to help India reach its target of 100 GW of nuclear power by 2047.
UPSC Perspectives
Science & Technology: India's Three-Stage Nuclear Programme
Conceived by Homi Bhabha, India's nuclear strategy is uniquely tailored to its resource profile—limited uranium but abundant thorium. Stage 1 utilizes natural uranium in (PHWRs) to generate electricity and a byproduct, Plutonium-239. Stage 2, which the spearheads, uses a mixed oxide fuel of Uranium-238 and Plutonium-239. It is termed a 'breeder' because it generates more fissile material than it consumes by transmuting U-238 into additional Pu-239. Built by (Bhartiya Nabhikiya Vidyut Nigam), the PFBR's success paves the way for Stage 3, which will finally utilize India's vast thorium reserves. This closed fuel cycle also addresses a major global concern by inherently recycling spent fuel, effectively managing nuclear waste.
Polity & Regulatory: Reforming Nuclear Governance
For decades, India's nuclear sector was a strict state monopoly. The article highlights the transformative (Sustainable Harnessing and Advancement of Nuclear Energy for Transforming India Act), which repealed the outdated and the . By permitting private and foreign investment in nuclear operations, the new law seeks to accelerate capacity building. Crucially, it aligns India with international norms by removing the controversial supplier liability that previously deterred foreign vendors, while introducing a graded liability cap for operators. To ensure safety amidst this expansion, the Act grants full statutory independence to the (AERB), a vital step for overseeing sensitive, dual-use technologies.
Economic & Environmental: Achieving Long-Term Energy Security
With volatile geopolitical conflicts in West Asia threatening fossil fuel supply chains, self-reliance in energy is an economic and strategic imperative. The government has set an ambitious target of 100 GW of nuclear power capacity by 2047, a critical component for achieving net-zero emissions by 2070. Unlike solar or wind energy, which suffer from intermittency, nuclear power offers a reliable, low-carbon baseload electricity supply essential for modern industries like AI and semiconductor manufacturing. Going forward, the deployment of large-scale breeder reactors alongside (SMRs) will diversify India's energy mix, reduce costly uranium import dependencies, and position India as a global leader in sustainable nuclear technology.