Why India Needs Nuclear Power

India is the world's third-largest energy consumer, yet nuclear power contributes barely 2% of its total electricity generation — approximately 47.9 TWh out of nearly 2,000 TWh produced annually. Coal dominates at 74%, making India one of the world's largest carbon emitters even as it has committed to achieving Net Zero emissions by 2070 and 500 GW of non-fossil fuel capacity by 2030. This contradiction defines India's energy policy challenge: the world's most ambitious renewable energy programme still rests on a coal foundation.

Nuclear energy offers an essential bridge in this transition. Unlike solar and wind, nuclear provides baseload power — continuous, weather-independent electricity — that is irreplaceable for industrial grids, data centres, and round-the-clock urban supply. As of 2026, India operates 24 nuclear reactors with a combined installed capacity of approximately 7,935 MWe. Eight more reactors (6,028 MWe) are under construction. PM Modi's announcement on India's 80th Independence Day — August 15, 2026 — of a 100 GW nuclear target by 2047 means India must increase its nuclear capacity more than 12 times in just two decades.

The paradox deepens when one examines India's resource position. India holds merely 1–2% of global uranium reserves — the conventional fuel for nuclear reactors — but commands approximately 25–30% of the world's known thorium reserves, one of the most energy-dense and clean nuclear fuels available. The entire strategic logic of India's nuclear programme rests on converting this thorium wealth into energy self-sufficiency. The developments of 2025–26 — the SHANTI Act and the PFBR milestone — are the most consequential steps India has taken toward that objective in a generation.

India's nuclear energy strategy is not a conventional reactor-building exercise. It is a multigenerational technological programme conceived in the 1950s by physicist Homi Jehangir Bhabha, presented formally in November 1954 at a conference on 'Development of Atomic Energy for Peaceful Purposes' chaired by Prime Minister Jawaharlal Nehru, and officially adopted by the Government of India in 1958. Unlike other nuclear nations that imported reactors and fuel as a package, Bhabha's design was an integrated fuel-cycle strategy built around India's particular resource reality: scarce uranium, abundant thorium. The programme's genius lies not in any single reactor but in the sequencing: each stage produces the fuel for the next.

Stage I — Natural Uranium PHWRs: The Foundation

Pressurised Heavy Water Reactors (PHWRs) burn natural uranium and use heavy water as both moderator and coolant. They are ideal for India because they do not require enriched uranium — a costly and strategically sensitive process. India has indigenously developed a series of PHWR designs: 220 MWe, 540 MWe, and 700 MWe. As a byproduct of burning uranium, these reactors produce plutonium-239, which accumulates as the fuel reserve for Stage II. All of India's 24 currently operational reactors are primarily in Stage I.

Stage II — Fast Breeder Reactors: The Bridge

Fast Breeder Reactors (FBRs) burn mixed oxide (MOX) fuel containing recovered plutonium-239 along with natural uranium or depleted uranium. Their defining characteristic is that they 'breed' more fissile material than they consume — producing additional plutonium while simultaneously converting thorium-232 (a non-fissile material) into uranium-233 (a fissile material usable in Stage III). FBRs are therefore the critical bridge between uranium-based energy and thorium-based energy. India's PFBR at Kalpakkam, which achieved first criticality on April 7, 2026, is the gateway into this stage — a landmark that took 68 years to reach from Bhabha's original conception.

Stage III — Thorium-U-233 Thermal Breeders: The Endgame

Advanced Heavy Water Reactors (AHWRs) will use the uranium-233 bred in Stage II to sustain a self-reinforcing thorium fuel cycle. Once Stage III is fully operational, India's nuclear programme could run for centuries on domestic thorium alone. Scientists estimate the country's thorium reserves could support 470–500 GWe of nuclear power for over four centuries. Full Stage III operation is projected beyond 2050, but Stage II's activation — which just occurred — is the indispensable precondition. Without commercial FBRs producing sufficient U-233, Stage III cannot begin.

The Kalpakkam Moment:  

On April 7, 2026, India achieved a milestone that had been decades in the making and several years behind schedule: the Prototype Fast Breeder Reactor (PFBR) at Kalpakkam, Tamil Nadu, achieved first criticality — the point at which a nuclear reactor sustains a self-sustaining chain reaction. IAEA Director General Rafael Grossi publicly hailed the achievement on April 9, 2026, recognising India's entry into an exclusive technological club. On India's 80th Independence Day, Prime Minister Modi described it as proof of 'the depth of the nation's scientific capability and the strength of its engineering enterprise.'

The PFBR has a generating capacity of 500 megawatt-electric (MWe). It is operated by Bharatiya Nabhikiya Vidyut Nigam Limited (BHAVINI), a Government of India enterprise under the Department of Atomic Energy (DAE). What makes the achievement especially significant is its indigenous character: the reactor was designed and built with contributions from over 200 Indian companies — including MSMEs — making it a landmark demonstration of Aatmanirbhar Bharat in deep technology. No foreign vendor built this reactor.

With the PFBR operational, India becomes only the second country in the world — after Russia — to have a commercial-scale fast breeder reactor in operation. France had one (Superphénix) but decommissioned it in 1998; China's CFR-600 is still in early operational phase. India's achievement is therefore among the world's most advanced in this specific technological domain. The strategic implication is profound: the PFBR will begin generating the plutonium inventory necessary to fuel the next generation of commercial Fast Breeder Reactors (CFBRs), each of 600 MWe, which are planned for the 2030s. Every month the PFBR operates, India's Stage III thorium dream edges closer to technical viability.

The Sustainable Harnessing and Advancement of Nuclear Energy for Transforming India Act, 2025 — abbreviated as the SHANTI Act — is the most consequential reform in Indian nuclear governance in 63 years. Introduced in Lok Sabha on December 15, 2025, it was passed by the Lok Sabha on December 17, cleared by the Rajya Sabha on December 18, and received Presidential assent on December 22, 2025. In one extraordinary parliamentary week, India rewrote the foundational rules of its atomic future. The SHANTI Act replaces two earlier laws: the Atomic Energy Act, 1962, and the Civil Liability for Nuclear Damage Act, 2010.

Core Reform: Private Sector Entry

The defining change is structural. Under the old framework, only government entities could own and operate nuclear facilities. The SHANTI Act now permits the Central Government to grant operating licences to 'any company incorporated in India,' as well as to joint ventures between private companies and the government. The sole restriction is that companies incorporated outside India — i.e., foreign corporations — remain excluded. This single reform transforms nuclear energy from a state monopoly into a sector open to Indian industrial capital, immediately enabling private investment proposals like the one submitted by the Adani Group for Odisha in July 2026.

AERB: From Dependent Board to Statutory Regulator

Prior to the SHANTI Act, the Atomic Energy Regulatory Board (AERB) operated under the authority of the old Atomic Energy Act and reported to the Department of Atomic Energy — the same ministry that promotes nuclear power. This dual role (promoter and regulator under the same umbrella) was a recognised governance flaw. The SHANTI Act grants AERB independent statutory status, with a Chairperson, one whole-time member, and up to seven part-time members. A new Atomic Energy Redressal Advisory Council provides appellate review of both AERB and government decisions, adding a crucial rule-of-law dimension to nuclear oversight.

Liability Reform: Removing the Supplier Deterrent

The old Civil Liability for Nuclear Damage Act, 2010, contained a provision — Section 17(b) — giving nuclear plant operators the right of recourse against equipment suppliers for accidents attributable to defective supplies. This provision had made India an unattractive market for American nuclear vendors such as Westinghouse and GE-Hitachi, who refused to supply equipment while facing potentially unlimited liability under Indian courts. The SHANTI Act removes this supplier recourse right entirely and introduces a tiered liability structure: operators bear liability ranging from ?100 crore to ?3,000 crore based on the reactor's thermal power capacity. This directly removes the primary legal barrier to meaningful India-US nuclear commerce, more than 17 years after the historic 2008 civil nuclear agreement.

The 80th Independence Day Declaration: 100 GW Nuclear by 2047

Prime Minister Modi's address from the Red Fort on August 15, 2026 — the 80th Independence Day — placed nuclear energy at the centre of India's Viksit Bharat roadmap. He announced a target of 100 gigawatts of nuclear power capacity by 2047, the centenary of India's independence. The arithmetic of ambition is stark: from approximately 7.9 GW today to 100 GW in 21 years requires more than a 12-fold increase. For perspective, achieving this would make India the world's second-largest nuclear power nation after the United States.

PM Modi announced that 5 new reactors would become operational within the current decade, adding to a construction pipeline that already includes Kudankulam Units 3–6 (4,000 MWe, Russian VVER-1000 technology), Rajasthan Unit 8 (700 MWe), Kaiga Units 5 and 6 (1,400 MWe), and Gorakhpur Units 1 and 2 (1,400 MWe) — which together represent approximately 13.5 GW of additional capacity when combined with the PFBR. The government has allocated ?20,000 crore specifically for Small Modular Reactor (SMR) development, recognising that large reactors alone cannot close the gap to 100 GW.

SMRs — reactors with capacity below 300 MWe — are transforming the global nuclear landscape. They are faster to build (3–5 years vs 8–12 years for large reactors), require less land, can be factory-manufactured and transported, and can be sited closer to industrial consumers or in remote locations. Countries including the USA, UK, South Korea, and Canada are investing heavily in SMR technology. India's ?20,000 crore allocation positions it to become both an SMR user and a potential manufacturer — an opportunity that aligns with the broader Semicon and technology manufacturing push announced in the same Independence Day speech.

Nuclear energy in India sits within an airtight constitutional framework of central exclusivity. Under Schedule VII of the Constitution, List I (Union List), Entry 5 reads: 'Atomic energy and mineral resources necessary for its production.' By virtue of Article 246(1), Parliament has exclusive power to legislate on all subjects in List I. No state legislature can enact any law on nuclear energy, and no state government can issue any licence or permit relating to nuclear materials or facilities. This is why every aspect of nuclear governance — from the Atomic Energy Act 1962 to the SHANTI Act 2025 — has been a Parliamentary statute, and why private companies seeking nuclear licences deal exclusively with the Central Government.

The post-SHANTI Act institutional architecture involves distinct, constitutionally and statutorily defined entities. The Department of Atomic Energy (DAE), under the Prime Minister's Office, provides overall policy direction and reports directly to the Prime Minister — a unique constitutional arrangement reflecting nuclear's strategic sensitivity. The Nuclear Power Corporation of India Ltd (NPCIL) remains the dominant operator of India's operating nuclear fleet. BHAVINI specifically manages fast breeder reactor development and operation. The AERB, now statutory, exercises independent safety and regulatory oversight over all nuclear facilities — including those to be set up by private operators. The Atomic Energy Redressal Advisory Council provides appellate review, introducing a layer of judicial principle into what was previously an entirely executive domain.

India's nuclear governance also has a critical international dimension shaped by its non-NPT status. India conducted nuclear tests in 1974 (Pokhran-I, 'Smiling Buddha') and 1998 (Pokhran-II, 'Operation Shakti'), leading to international sanctions and nuclear isolation for three decades. The Indo-US Civil Nuclear Agreement of 2008 — negotiated under the UPA government and the 123 Agreement — and the subsequent NSG (Nuclear Suppliers Group) waiver in 2008 ended this isolation and opened the door to uranium imports and civil nuclear technology partnerships. India has since signed civil nuclear cooperation agreements with over 14 countries, including Russia, France, Japan, South Korea, Canada, Australia, and the United Kingdom. The SHANTI Act's liability reform is expected to finally unlock meaningful nuclear commerce with the United States — more than 17 years after the landmark 2008 deal.

India's 100 GW nuclear ambition must be evaluated against a set of structural challenges that have historically kept the country's installed nuclear capacity below 8 GW for decades, despite the three-stage programme being 68 years old. These are not abstract concerns; they are the precise reasons why India's nuclear programme has repeatedly underperformed its own projections.

Uranium Import Dependency

India's domestic uranium reserves cannot fuel even its existing reactor fleet without imports. India currently imports uranium from Kazakhstan, Russia, France, Uzbekistan, and Canada, creating strategic vulnerability to geopolitical disruptions. Until Stage III thorium reactors become operational — which is decades away — the 100 GW ambition will require massive uranium import expansion, creating a paradox: the programme meant to reduce energy import dependence will intensify it in the medium term.

Land Acquisition and Social Licence

India's largest planned nuclear projects have faced prolonged delays due to land acquisition disputes and community opposition. The proposed Jaitapur nuclear park in Maharashtra — planned at an eventual 9,900 MWe, which would be the world's largest nuclear power station — has been delayed for over a decade due to resistance from local fishing and farming communities. Kovvada in Andhra Pradesh faces similar challenges. The Kudankulam protests in Tamil Nadu demonstrated that even after a plant is built, sustained community opposition can disrupt operations. With private sector participation now enabled, the social licence challenge becomes even more complex: private companies have less institutional authority and community trust than the government.

Nuclear Talent Shortage

Between 2010 and 2020, eight Indian universities launched MTech programmes in nuclear engineering. By 2025, nearly all had shut down due to low enrolment and insufficient industry demand. India now faces a severe shortage of trained nuclear engineers precisely when it needs to build over a dozen large plants within the next two decades. The nuclear talent pipeline is arguably the most underappreciated structural constraint on the 100 GW target. This needs emergency intervention on the scale of the government's semiconductor talent development plan.

AERB Regulatory Readiness

While the SHANTI Act grants AERB statutory independence, the Board has not yet established a specialised regulatory framework for Small Modular Reactors — which are central to the 100 GW roadmap. Developing safety standards, licensing procedures, and inspection protocols for new reactor designs requires 3–5 years of technical preparation. If SMR deployment is to begin meaningfully before 2032, AERB's institutional capacity must be built on an urgent basis, including international knowledge exchange with the US NRC (Nuclear Regulatory Commission) and the IAEA's SMR safety assessment programmes.

Cost Competitiveness and Capital Markets

Utility-scale solar now costs ?2–2.5 per unit in India, while nuclear power remains significantly more expensive on a levelised cost basis, with high upfront capital requirements and long construction timelines of 8–12 years per large reactor. Private investors are naturally attracted to faster-returning assets. The 100 GW nuclear target will require innovative financing mechanisms — green nuclear bonds, concessional government-backed lending, and nuclear liability insurance pools — that make private nuclear investment economically viable despite these inherent characteristics.

The convergence of the SHANTI Act, the PFBR milestone, and the Independence Day 100 GW declaration has created a policy window of rare historical significance. Translating ambition into installed capacity requires simultaneous action on at least five fronts.

First, PFBR's full commercial operation must be completed without further delay, and the four planned commercial Fast Breeder Reactors (CFBRs) of 600 MWe each must be commissioned in the early 2030s. Every month of FBR delay extends the timeline to Stage III and reduces the total plutonium available for new plants. The 100 GW goal is directly linked to how quickly India can scale its FBR fleet.

Second, the SHANTI Act's promise must be matched with regulatory readiness. The AERB must establish a dedicated SMR licensing vertical — staffed, funded, and equipped — within the next 12 months. A nuclear liability insurance pool, similar to Germany's Nuklearpool or the US Price-Anderson Nuclear Industries Indemnity Act framework, should be established by the government to absorb liability risk and make private nuclear investment bankable.

Third, nuclear engineering education must be treated as a national emergency. A coordinated programme involving DAE, IITs, NITs, and the newly statutory AERB — offering scholarships, assured employment pathways, and industry collaboration — must begin immediately to build the workforce pipeline that will be needed by 2030 when construction activity accelerates.

Fourth, the diplomatic opportunity created by the SHANTI Act's liability reforms must be seized immediately. American vendors Westinghouse (AP1000 technology) and GE-Hitachi (BWRX-300 SMR) should be actively engaged for plant partnerships at Kovvada and other cleared sites. This deepens the India-US strategic partnership in clean energy while also introducing competing technologies that keep costs in check.

Fifth, Odisha's nuclear aspirations require a dedicated state-level facilitation framework: an integrated nuclear and pumped storage industrial corridor, streamlined environmental and forest clearances for identified sites, proactive engagement with coastal fishing communities whose livelihoods may be affected, and a dedicated state nodal agency to coordinate with the Central Government's nuclear licensing process. Odisha has the opportunity to become the eastern anchor of India's nuclear energy map — but only if governance keeps pace with investment interest.