After Reading This Article You Can Solve This UPSC PYQ 2018:
With growing energy needs should India keep on expanding its nuclear energy programme? Discuss the facts and fears associated with nuclear energy. 15 Marks (GS-3 Science & Technology)
Context
India is currently undergoing a paradigm shift in its nuclear energy policy, moving from a state-monopoly “strategic” sector to a “commercial-participation” model. The goal is to scale capacity from 8.8 GW to 100 GW by 2047, aligned with the Viksit Bharat and Net-Zero 2070 targets.
Why Nuclear is Critical for India?
1. Reliable Baseload Power
Nuclear provides 24/7 constant power, unlike intermittent solar or wind. In 2024, renewables made up 50% of capacity but only 22% of actual generation. Nuclear ensures grid stability without the prohibitive costs of large-scale battery storage.
2. Land-Use Efficiency
As a land-stressed nation, India benefits from nuclear’s compact footprint it is 10 times more land-efficient than solar or wind farms. Expanding nuclear saves vast tracts of agricultural and forest land required for 100 GW of solar.
3. Shield Against West Asia Volatility
The “Twin Threat” of supply disruptions and price shocks in the Middle East jeopardizes India’s energy security. Nuclear reduces the “Risk Premium” on the economy by cutting long-term reliance on fossil fuel imports from geopolitically unstable regions.
4. Tapping Thorium Reserves
India holds 25% of global Thorium. Success in the AHWR and HALEU tracks allows India to move from being a “resource-taker” to an “energy-giver,” providing centuries of sovereign, self-reliant power.
5. Decarbonizing “Hard-to-Abate” Industry
Heavy industries like Steel, Cement, and Petrochemicals require high-grade heat that renewables cannot easily provide. Small Modular Reactors (SMRs) offer a localized, carbon-free heat source essential for achieving Net-Zero 2070.
6. Strategic Autonomy & Export Potential
The SHANTI Act (2025) transitions India from a “technology follower” to a global exporter. Our indigenous 220 MW and 700 MW PHWR models are now positioned as cost-competitive solutions for the Global South, enhancing India’s diplomatic and technological “Soft Power.”
The SHANTI Act (2025): A Legislative Milestone
Key Provisions & Structural Changes
- Repeal of Legacy Laws: It replaces the Atomic Energy Act (1962) and the Civil Liability for Nuclear Damage Act (CLNDA, 2010), modernizing a decades-old framework.
- Private & Foreign Participation: For the first time, private companies (domestic and foreign) are permitted to build, own and operate nuclear power plants.
- Statutory Status for AERB: The Atomic Energy Regulatory Board (AERB), previously a subordinate body under the Department of Atomic Energy (DAE), is now a statutory, autonomous regulator.
- Liability Framework Reform: It revises the “right to recourse” against suppliers, a major historical bottleneck that deterred foreign players like Westinghouse and EDF.
2. India’s Traditional Three-Stage Nuclear Power Programme
Formulated by Dr. Homi Bhabha in the 1950s, this program was designed to utilize India’s vast Thorium reserves, given its limited Uranium.
| Stage | Technology / Reactor Type | Fuel Cycle | Objective & Status |
| Stage I | PHWR (Pressurised Heavy Water Reactor) | Natural Uranium (Fuel) + Heavy Water (Moderator/Coolant) | Objective: Generate electricity and produce Plutonium-239 as a byproduct. Status: Mature; 15+ indigenous 220MW/700MW units operational. |
| Stage II | PFBR (Prototype Fast Breeder Reactor) | Plutonium-239 (Mixed Oxide Fuel) + Uranium-238 | Objective: “Breed” more fuel than consumed. Converts U-238 to more Plutonium. Eventually, uses a Thorium blanket to create U-233. Status: Kalpakkam PFBR is the lead project. |
| Stage III | AHWR (Advanced Heavy Water Reactor) | Thorium-232 + Uranium-233 | Objective: Utilize Thorium as the primary fuel source for sustainable, centuries-long energy security. Status: Under R&D; requires successful completion of Stage II. |
Why the Three Stages?
- Resource Constraint: India has only 2% of global Uranium but 25% of global Thorium.
- The Thorium Challenge: Thorium is not “fissile” (cannot start a reaction alone); it is “fertile.” It must be converted into Uranium-233 in a reactor first.
- The Sequence: Stage I builds the inventory of Plutonium. Stage II uses that Plutonium to “cook” Thorium into U-233. Stage III finally burns the U-233 with Thorium for power.
Current Technological Landscape & New Strategies
To reach the 100 GW target, India is diversifying beyond the traditional three-stage plan:
1. Small Modular Reactors (SMRs): The “Plug-and-Play” Future
The 2025-26 Budget allocated ₹20,000 crore specifically for SMR R&D.
- Design Variety: India is developing five indigenous models (5 MW, 55 MW, and 200 MW).
- Industrial Integration: Targeted at “Hard-to-Abate” sectors Steel, Cement, Petrochemicals, and Data Centers.
- Rapid Deployment: Using modular construction (factory-built components), the “pour-to-power” timeline is targeted at 40 months.
- The 220 MW Workhorse: The proven indigenous 220 MW PHWR is being redesigned as a modular unit for private sector fabrication.
2. Scaling High-Capacity Reactors (The GW Giants)
While SMRs handle industry, massive 1000 MW+ reactors are needed for the national grid.
- Fleet Mode Operation: Bulk approval for 10 reactors (700 MW PHWRs) to streamline supply chains and reduce costs to $2 million per MW.
- Foreign Technology Indigenization:
- Jaitapur (French EDF): 6 reactors of 1,650 MW (EPR design).
- Kovvada/Mithi Virdi (US Designs): Westinghouse-Toshiba and GE-Hitachi models.
- Challenge: These “unproven” designs currently cost $5 million per MW; the strategy is to “Indianize” the supply chain to slash costs by 60%.
3. Breakthroughs in Fuel Technology
- HALEU (High Assay Low Enriched Uranium): Using HALEU as a driver fuel for Thorium. This allows India to use its Thorium reserves without waiting for the full commercialization of Stage-2 Fast Breeder Reactors.
- Molten-Salt Reactors (MSR): A shift toward liquid-fueled reactors which are inherently safer (cannot melt down) and more efficient at utilizing Thorium.
Challenges in the India’s Nuclear Energy Program
1. High Capital Outlay & Financing
- The Cost Barrier: Adding 90 GW requires approximately $200 billion (₹18 lakh crore).
- The Risk Factor: Nuclear projects have long gestation periods (10–15 years) and high upfront costs. Attracting private and foreign investment requires a transparent financing model and clear tariff structures to ensure a Return on Investment (ROI).
2. Technology Indigenization & Cost Parity
- Foreign vs. Local: Imported designs (French EPR, US AP1000) currently cost ~$5 million/MW, whereas India’s indigenous 700 MW PHWR costs ~$2 million/MW.
- The “China Benchmarking”: To be competitive, India must “Indianize” supply chains for foreign reactors to bring costs down to the $2 million/MW level, as demonstrated by China’s recent 33-reactor rollout.
3. Regulatory & Statutory Hurdles
- Notification of Rules: The SHANTI Act is a framework; its success depends on the rapid notification of rules regarding fuel ownership, waste management and decommissioning.
- Land & Exclusion Zones: Current regulations for large “nuclear parks” (multiple reactors) must be modified to allow Small Modular Reactors (SMRs) to sit within industrial clusters or “Exclusion Zones” of private factories.
4. Supply Chain & Human Capital
- Manufacturing Depth: Moving to “Fleet Mode” requires a massive scale-up of domestic fabrication capacity for specialized reactor components, pressure vessels and thorium-cladding.
- Skill Gap: A 10x increase in capacity requires a parallel 10x increase in specialized nuclear engineers, safety auditors and technicians.
5. Public Perception & Liability Concerns
- Social Acceptance: Despite the repeal of the 2010 CLNDA, concerns regarding nuclear safety and “Right to Recourse” persist.
- Transparency: An autonomous regulator (AERB) must prove its independence to maintain public trust, especially with private players now operating plants.
6. Fuel Security & Enrichment
- Uranium Import Dependence: While India has Thorium, its Stage-1 and Stage-2 reactors still rely on Uranium. Managing the geopolitics of the Nuclear Suppliers Group (NSG) and securing long-term fuel ties remains a priority.
- HALEU Production: Scaling up High Assay Low Enriched Uranium (HALEU) production is technically demanding and essential for the new Thorium-centric strategy.
Way Forward
1. Rapid Notification of Rules
The government must quickly notify supportive regulations under the SHANTI Act. This includes transparent guidelines on nuclear fuel ownership, waste management, insurance liability, and a clear dispute settlement mechanism to build investor confidence.
2. Accelerated SMR Deployment
Focus on the indigenous 220 MW PHWR as a “modular workhorse.” By reducing the “pour-to-power” time to 40 months and modifying Exclusion Zone regulations, India can integrate Small Modular Reactors (SMRs) directly into heavy industrial clusters (Steel, Cement, Data Centers).
3. Aggressive Indigenization of Foreign Designs
To reach the cost-benchmark of $2 million per MW, India must “Indianize” the supply chains for imported reactors (EDF, Westinghouse). Learning from the Chinese model, building a robust domestic supporting industry is essential to make high-capacity plants economically viable.
4. Early Exploitation of Thorium
Prioritize R&D in Thorium cladding with HALEU (High Assay Low Enriched Uranium). This provides an alternative to the long-gestation Breeder Reactor route, allowing India to utilize its massive Thorium reserves much earlier in the 2047 timeline.
5. Innovative Financing Models
Given the $200 billion (₹18 lakh crore) requirement, the state must move beyond budgetary support. Developing Public-Private Partnership (PPP) models, Green Bonds, and long-term Power Purchase Agreements (PPAs) is critical to attracting both domestic and foreign private capital.
6. Strengthening Regulatory Autonomy
Empower the Atomic Energy Regulatory Board (AERB) with true statutory independence. A transparent, autonomous regulator is vital to maintaining high safety standards and public trust, especially as private players enter the “build, own, and operate” space.
Conclusion
The SHANTI Act (2025) pivots India from state-led to market-driven nuclear energy. By leveraging private capital and indigenous SMRs, India can achieve its 100 GW target and Net-Zero 2070 goals.
