India's Nuclear Ambitions: The Sleeping Giant of the SMR World
India has the demand, the resources, the technology base, and now the legislation to become the most consequential SMR market on the planet.
Here is a country with 1.4 billion people, the world’s fastest-growing major economy, a coal dependency so entrenched it produces 75% of its electricity from burning the stuff, a net-zero commitment it can’t realistically meet with renewables alone, and — sitting quietly under its soil — roughly 25% of the world’s known thorium reserves. That combination of problems and resources doesn’t point to solar panels. It points to nuclear reactors. Lots of them.
India has been circling nuclear energy as a serious solution for seven decades. The physicist Homi Bhabha laid out a three-stage nuclear program in 1954 that was visionary for its time and remains technically sophisticated today. What the country has lacked, repeatedly, is the legal framework, the financing model, and the political appetite to turn ambition into gigawatts at speed. In late 2025, something shifted. Really shifted. And the SMR industry should be paying very close attention.
Why India’s energy problem is unlike anyone else’s
Scale is the starting point for understanding India ☀️. The country currently generates about 2,060 terawatt-hours of electricity annually, making it the world’s third-largest producer. That sounds substantial until you realize that per capita electricity consumption in India remains well below the global average, and the economy is still growing at a pace that will roughly require doubling total electricity capacity by 2030, then doubling it again to reach the kind of energy density needed for the “Viksit Bharat” (developed India) vision of 2047.
The World Nuclear Association’s country profile for India states plainly that energy demand is expected to grow more in India than any other country over the next decade. By 2040, according to the Observer Research Foundation, India is projected to account for nearly 25% of growth in global energy demand. That’s not a rounding error in someone’s forecast model. That’s a structural feature of the world economy.
Coal is what currently fills that demand, and it does so at serious cost:
Coal plants generate roughly 75% of India’s electricity, with over 280 gigawatts of installed coal capacity
Coal India, the state-owned miner, produces over 600 million tonnes annually, making it the world’s largest coal producer by volume
Indian coal plants are estimated to cause 100,000+ premature deaths per year from air pollution
India pledged net-zero emissions by 2070, but coal remains entrenched well beyond 2050 under current planning
India’s renewable expansion is real. Installed renewable capacity reached 220 gigawatts by 2025. But renewables alone can’t deliver baseload power at the scale India needs, especially not to the remote industrial zones, retiring coal plant sites, and off-grid communities that make up a significant chunk of the country’s energy geography. That’s the gap that nuclear, and specifically SMRs, is positioned to fill.
The three-stage plan: ambition in slow motion
India doesn’t come to nuclear energy as a newcomer 🔬. The three-stage nuclear program Bhabha designed in the 1950s is a long-term scheme to use India’s limited uranium reserves as a launching pad, breed plutonium through fast reactors, and ultimately tap the country’s enormous thorium reserves as the endgame fuel. In theory, it’s brilliant. India holds 846,000 tonnes of thorium, and Indian scientists estimate the country could produce 500 gigawatts of electricity for four centuries from its economically extractable thorium alone.
In practice, the program has moved at a pace that might generously be called deliberate:
Stage 1, natural uranium-fueled pressurized heavy water reactors (PHWRs), has genuinely worked. India has 22 operational reactors and a genuine indigenous manufacturing capability in PHWR technology
Stage 2, plutonium-fueled fast breeder reactors, was supposed to be well underway by now. The 500 MW Prototype Fast Breeder Reactor (PFBR) at Kalpakkam finally achieved criticality in April 2026, roughly two decades behind original projections
Stage 3, the thorium cycle, remains a future ambition rather than a current program
Nuclear power contributes just 3.1% of India’s electricity today, after more than 60 years of development. That number tells you something important: India knows how to build nuclear reactors, but not yet how to build them fast enough or cheaply enough to matter at scale.
Here’s the thing, though. That PHWR expertise is directly relevant to SMRs. The 200 MWe Bharat Small Modular Reactor (BSMR-200) that India’s Bhabha Atomic Research Centre is now developing uses the same pressurized heavy water reactor technology India has been refining since the 1980s. This isn’t speculative science. It’s a known physics platform in a smaller box.
The legislation that changed everything
For the better part of six decades, India’s Atomic Energy Act of 1962 barred private companies from any meaningful participation in nuclear power generation. Only government-owned entities, principally the Nuclear Power Corporation of India Limited (NPCIL), could build or operate reactors. That structure made India’s nuclear program insulated but also slow, capital-constrained, and cut off from the global supply chains and technology transfers that other countries used to build nuclear capacity faster ⚡.
The SHANTI Bill, passed by both houses of India’s parliament on December 18, 2025, changed that structure entirely. The Sustainable Harnessing and Advancement of Nuclear Energy for Transforming India Act repeals both the 1962 Act and the Civil Liability for Nuclear Damage Act of 2010. The liability law change matters enormously: the 2010 law’s supplier liability provisions had blocked international companies, including EDF and Westinghouse, from entering the Indian market for 15 years, because they faced unlimited legal exposure for any nuclear incident caused by their equipment.
What the SHANTI Act does specifically:
Private Indian companies and joint ventures can now build, own, operate, and decommission nuclear power plants
The government retains control over sensitive fuel-cycle activities (uranium mining, enrichment above a threshold, heavy water production, high-level waste management)
A tiered liability cap structure replaces unlimited supplier liability, with maximum overall liability set at 300 million Special Drawing Rights (approximately $430 million) per incident
The Atomic Energy Regulatory Board receives full statutory independence, aligning India’s oversight model with the US and other Western nuclear markets
A dedicated Atomic Energy Redressal Advisory Council handles disputes, with appeal rights up to the Supreme Court
The Asia Group’s analysis of the bill called this “a new era of commercial partnerships” between Indian private firms and US companies. Holtec International’s founder Kris Singh called India “likely to be the largest nuclear market in the world in the foreseeable future.” Rolls-Royce SMR, Westinghouse, and GE Hitachi have all been watching the SHANTI process closely. The legal logjam that held up France’s EDF for years on the Jaitapur project appears to be genuinely cleared.
Have you been watching how quickly the Indian regulatory environment has shifted in 2025? The pace of legislative change in this space is accelerating in ways that weren’t predictable even two years ago.
The SMR program taking shape
India’s 2025-26 Union Budget launched the Nuclear Energy Mission with an allocation of INR 20,000 crore (roughly $2.5 billion) specifically for SMR research and development 🚀. The target is blunt: at least five indigenously designed and operational SMRs by 2033.
Three reactor designs are under active development by BARC:
BSMR-200: A 200 MWe pressurized heavy water reactor using slightly enriched uranium. Cabinet-level financial approval cleared. Lead unit proposed for Tarapur in Maharashtra. Estimated project cost: INR 5,960 crore
SMR-55: A 55 MWe reactor designed specifically for off-grid deployment in remote locations, including operation in “isolated mode” without grid connectivity. Lead twin units planned for Tarapur by 2033. Estimated cost: INR 7,000 crore for two units
5 MWt High-Temperature Gas-Cooled Reactor: Not a power reactor at all, but a hydrogen production system, planned for BARC’s Vizag campus in Andhra Pradesh. Budget: INR 320 crore
These aren’t just drawings on someone’s whiteboard. In-principle approval for construction has been obtained for all three demonstration designs. Tata Consulting Engineers has said the plan is to deploy 40-50 SMRs across India. Tata Power and the Naveen Jindal Group have both expressed interest in becoming early private owners.
The off-grid application of the SMR-55 is worth particular attention. India has four retired coal plant sites that the Central Electricity Authority identified in September 2025 as potential nuclear repowering locations. Several more are expected to retire before 2040. Replacing a retiring 500 MW coal plant with a cluster of SMR-55 units on the same industrial site, using existing grid connections, workers, and cooling infrastructure, is the kind of application that makes theoretical SMR advantages suddenly very concrete.
What makes India different from every other market
India is not just another country with nuclear ambitions. The combination of factors here is unlike anything in Western Europe, North America, or even China 🌏:
India has domestic PHWR expertise that directly translates to the BSMR-200 design. This isn’t importing foreign technology — it’s packaging existing capability in a new format
The three-stage nuclear plan means India has a strategic and ideological commitment to nuclear that goes beyond energy policy. It’s national identity
India’s 25% share of world thorium reserves means that the long-term fuel story for Indian nuclear is fundamentally different from countries that depend on imported uranium
The country’s AI and data center sector is growing explosively. A Deloitte report in May 2025 highlighted “doubling of global electricity demand from data centres and AI by 2026,” and the Observer Research Foundation notes India’s government is exploring SMRs specifically for captive data center power supply
The SHANTI Act removes the supplier liability barrier that cost the nuclear industry 15 years of lost deals in India. That problem is now structurally resolved
There’s a counterargument worth taking seriously. India’s nuclear targets have been consistently optimistic and consistently missed. The 100 GW by 2047 goal requires building more nuclear capacity in 22 years than India has built in 70. The regulatory and financing ecosystem for private nuclear is brand new. The BSMR-200 is still a demonstration project with a 7-year commissioning timeline from financial approval. And, as Karthik Ganesan at the Council on Energy, Environment and Water noted to Physics World, SMRs “are still to demonstrate that they can supply electricity at scale.”
All of that is fair. But the legal transformation of December 2025 is real, the funding allocation is committed, the reactor designs are in detailed engineering, and the demand signal from a rapidly industrializing 1.4-billion-person economy isn’t going anywhere.
If the Bharat Small Modular Reactor program reaches commercial deployment by the mid-2030s, India won’t just be a customer for someone else’s technology. It will be a reactor exporter. A country with India’s manufacturing scale, engineering talent, and cost structure could produce PHWR-derived SMRs at a price point that makes Western designs look expensive. That possibility should be on the radar of every SMR developer currently pitching to Southeast Asian and African markets.
Here’s the question the global SMR industry should be actively debating: if India successfully deploys its indigenous Bharat SMR design at scale, does that accelerate the global SMR market by proving the concept in the world’s largest energy growth market — or does it become a formidable competitor that undercuts everyone else on price?