AI Revolution and Data Centres: India’s SMR Leap to Power the Future
As the global race for Artificial Intelligence (AI) supremacy
intensifies, the frontline has shifted from silicon chips to the power grid. AI
data centres, the gargantuan "digital brains" of the 21st century,
are projected to consume nearly double the electricity by 2027. In India, where
data storage capacity is expected to hit 1.8 GW next year, the traditional
grid—already strained—is hitting a wall. Solar and wind, while green, lack the
24/7 "baseload" reliability that sensitive GPU clusters demand.
Enter the Small Modular Reactor (SMR).
No longer a futuristic concept, SMRs are the cornerstone of
the government’s newly minted SHANTI Act 2025. By dismantling the
decades-old state monopoly and resolving the supplier liability deadlock, India
is betting on these factory-built, 300 MW nuclear modules to fuel its digital
dream.
Why SMRs? Why Now?
Unlike the massive 1,000 MW reactors of the past that took
decades to build, SMRs are designed for speed. Their modular nature allows
components to be factory-fabricated and "plugged in" near demand
centres. For a data centre in Mumbai or Chennai, having a dedicated
"captive" SMR on-site means total energy independence from the grid
and a zero-carbon footprint—a critical metric for global tech giants like
Microsoft and Google, who have pledged carbon-negative goals.
What are Small Modular Reactors (SMRs)?
SMRs are advanced nuclear fission reactors with a power
capacity typically up to 300 MWe (megawatts electric) per unit—roughly
one-third the capacity of traditional large-scale reactors.
- Small: They have a physically smaller
footprint, allowing them to be located in places where traditional plants
cannot go (e.g., near industrial clusters or data centres).
- Modular: Their components are factory-fabricated,
transported as a unit, and assembled on-site. This contrasts with
traditional plants which are custom-built "stick-build"
projects.
- Reactor: Like traditional plants, they
use nuclear fission to generate heat; however, they often utilize advanced
cooling (molten salt, gas, or liquid metal) alongside standard water-based
designs.
Advantages and Disadvantages
|
Advantages |
Disadvantages |
|
Lower Upfront Cost: Smaller scale means lower initial capital investment. |
Higher Cost per kWh: Currently, SMR electricity is more expensive than
large-scale nuclear or solar due to lack of scale. |
|
Passive Safety: Many use "walk-away" safety (gravity or natural
convection) that doesn't require human intervention. |
Waste Management: They still produce radioactive waste, and some designs may
produce more waste per unit of energy. |
|
Siting Flexibility: Can be built on brownfield sites (retired coal plants) or
near cities. |
Regulatory Hurdles: Existing laws are designed for large plants; SMRs require
new, faster licensing frameworks. |
|
Scalability: Modules can be added incrementally as power demand grows. |
Public Perception: General nuclear "NIMBY" (Not In My Backyard)
sentiment remains a barrier. |
Issues in Setting Up SMRs in India
The Civil Liability Bottleneck (CLND Act 2010)
The Civil Liability for Nuclear Damage (CLND) Act,
specifically Section 17(b), is a global anomaly. While international
conventions place liability solely on the operator, Indian law allows
the operator to sue the supplier if an accident is caused by faulty
equipment.
- Impact: Global giants like GE,
Westinghouse, and EDF are hesitant to enter the Indian market. For SMRs,
which rely on a wide "assembly line" of diverse component
suppliers, this legal risk multiplies, as every small valve maker faces
existential legal threats.
The State Monopoly
The Atomic Energy Act of 1962 restricts the
"ownership, control, and operation" of nuclear power plants to the
Central Government and its Public Sector Undertakings (PSUs) like NPCIL. As per
the new policy, Government is planning to allow Private companies to set up
such plants.
- Impact: This prevents private tech
titans (e.g., Tata, Reliance, or Adani) from building and owning SMRs for
their own data centres. Without private capital and competition, the
sector remains dependent on limited government budgets. Now that the
sector is being opened up for Private Sector, this hurdle should be out of
the way.
Capital Intensity and Financing
Even though an individual SMR is cheaper than a giant 1GW
plant, the specific cost per megawatt is often higher initially.
- Impact: A fleet of 10 SMRs requires an
outlay exceeding ₹20,000 crore. In a high-interest environment like India,
the "cost of capital" makes nuclear electricity expensive.
Unlike solar, which sees returns in 5 years, nuclear takes decades, making
it unattractive for commercial banks without massive government
guarantees.
Supply Chain and "Nuclear Grade" Manufacturing
Nuclear components require "N-Stamp" certification,
involving extreme precision and specialized materials that can withstand high
radiation and pressure for 60 years.
- Impact: India has very few heavy
forgings facilities capable of making reactor pressure vessels.
Transitioning from "standard industrial" to "nuclear
grade" manufacturing requires massive investment in quality control
which many Indian SMEs cannot currently afford.
Regulation (AERB)
The Atomic Energy Regulatory Board (AERB) is designed
to oversee a few massive projects.
- Impact: SMRs imply a shift toward
hundreds of smaller units scattered across the country. The AERB currently
lacks the technical manpower and digitized "type-certification"
processes to evaluate dozens of different SMR designs simultaneously
without causing decade-long approval backlogs.
The "Indigenous vs. Foreign" Tech Dilemma
India is torn between repurposing its proven 220MW
Pressurized Heavy Water Reactor (PHWR) design as an SMR or importing Light
Water Reactor (LWR) technology from the West or Russia.
- Impact: Choosing the PHWR allows for
domestic fuel (Natural Uranium) but lacks the advanced "passive
safety" features of modern SMRs. Importing foreign tech brings higher
efficiency but increases "technological dependency" and costs.
Fuel Security and the NSG Barrier
India is not a member of the Nuclear Suppliers Group (NSG).
- Impact: While the 2008 waiver allows
for some trade, India still faces hurdles in securing long-term,
high-volume "Enriched Uranium" required for many modern SMR
designs. Without a domestic enrichment capacity scaled for SMRs, India
remains vulnerable to global geopolitical shifts in the fuel market.
Land Acquisition and Local Resistance
Even though SMRs require significantly less land (roughly 10%
of a large plant), the word "Nuclear" triggers immediate local
anxiety.
- Impact: India’s land acquisition laws
are stringent. Protests (similar to those seen in Kudankulam or Jaitapur)
can stall projects for years. SMRs intended for "brownfield"
sites (near old coal plants) still face hurdles regarding local
rehabilitation and safety-zone zoning.
Data Centre Integration and Safety Perimeters
AI Data Centres require high security, but Nuclear Power
Plants require "Exclusion Zones" (typically a 1.5km radius).
- Impact: Integrating an SMR directly
onto a Data Centre campus creates a regulatory issues. Reconciling the Cybersecurity
protocols of a data centre with the Physical Security protocols of a
nuclear site is a dual-layered challenge that Indian regulators have yet
to define.
The Missing "Deep Geological Repository"
India currently uses "near-surface" facilities for
low-level waste and "interim storage" for high-level waste.
- Impact: As SMRs proliferate, the volume
of spent fuel increases. Without a finalized, scientifically proven Deep
Geological Repository (DGR) for long-term storage, public and
environmental opposition will likely intensify, citing the "unsolved
waste" problem.
Grid Infrastructure and "Smart" Distribution
India’s National Grid is built on "Hub and Spoke"
models—large plants sending power over long distances.
- Impact: SMRs are decentralized.
Integrating them requires a "Smart Grid" capable of
handling "distributed generation." Current DISCOM (Distribution
Company) infrastructure in many states is too antiquated to manage the
fluctuating loads and peer-to-peer power sharing that SMR-heavy grids
require.
Legacy of Delays (The "PFBR" Syndrome)
The Prototype Fast Breeder Reactor (PFBR) at Kalpakkam
is a cautionary tale, delayed by nearly two decades.
- Impact: Such delays have eroded the
confidence of private investors and international partners. The perception
is that Indian nuclear projects inevitably suffer from "cost and time
overruns," making it difficult to attract the "Fast
Capital" needed for the AI revolution. But the leading business
Groups have shown interest in setting up new projects under the proposed
guidelines for private Sector.
Specialized Skill Shortage
Nuclear engineering is a highly niche field in India,
dominated by government research (BARC).
- Impact: There is a massive "brain
drain" of nuclear scientists to the West. To run a fleet of SMRs,
India needs thousands of private-sector nuclear technicians, safety
officers, and decommissioning experts—a workforce that currently does not
exist at the required scale.
Economic Competition with Renewables
In India, the levelized cost of Solar/Wind has dropped to
roughly ₹2.5–3 per unit. SMR power is currently estimated to be significantly
higher (₹7–10 per unit).
- Impact: State-run DISCOMs, which are
already in deep debt, are reluctant to sign Power Purchase Agreements
(PPAs) for expensive nuclear power when cheaper (though intermittent)
green energy is available, even if nuclear provides better
"baseload" stability.
Geopolitical Friction and Sanctions Risk
Nuclear technology is "dual-use" (civil and
military).
- Impact: India’s neighbours often use
international platforms (like the IAEA or UN) to raise
"proliferation" concerns regarding India’s nuclear expansion.
Any future geopolitical tension could trigger "secondary
sanctions" on tech components, potentially paralyzing a fleet of SMRs
that rely on global supply chains.
Action Plans for India’s SMR Revolution
Amend the Atomic Energy Act (The SHANTI Bill 2025)
The government is replacing the restrictive 1962 Act with
the SHANTI Bill.
- This
reform shifts the sector from a state-run monopoly to a competitive
market. For the first time, Indian-registered private firms can
build, own, operate, and even decommission nuclear plants. It allows
for "Minority Foreign Stakeholding," enabling tech giants like
Microsoft or Adani to form Joint Ventures with global reactor designers to
power their captive AI clusters.
Clarify and Cap Liability (The 2025 Liability Shift)
To resolve the "Supplier Liability" deadlock, the
government is moving toward a pragmatic, global-standard regime.
- The
new framework removes the "automatic" right of recourse against
suppliers. It caps the operator’s liability at ₹3,000
crore (300 million SDRs), with the government acting as a backstop
for damages beyond that. A specialized Nuclear Liability
Fund and an Insurance Pool are being funded by a small levy on every
unit of nuclear electricity sold.
SMR-Specific "One-Window" Licensing
Traditional licensing for a 1,000 MW plant takes 5–7 years;
SMRs need a process that takes less than 24 months.
- The
AERB is shifting to "Type Certification." Instead
of reviewing every single site-specific reactor, they will certify a
"Standard Design" (like the Bharat Small Reactor). Once a design
is approved, any private player can "plug and play" it at a
pre-cleared site, significantly slashing the pre-construction timeline.
Coal-to-Nuclear (C2N) Transition Strategy
India has hundreds of gigawatts of retiring coal-fired
capacity.
- The C2N
Strategy focuses on repurposing these "brownfield"
sites. By replacing a 250 MW coal unit with a 220 MW SMR, India saves
billions on land acquisition and grid infrastructure. These sites already
have cooling water access, rail connectivity, and high-voltage
transmission lines, making them the fastest path to 100 GW.
Granting "Infrastructure Status" & Green Bonds
Nuclear has historically been excluded from "Green"
finance due to waste concerns.
- By
granting SMRs Harmonized Infrastructure Status, the government allows
developers to access 25-year low-interest loans. Furthermore, SMRs
are being included in India’s Sovereign Green Bond Framework,
attracting ESG-focused global capital that previously only went to solar
and wind projects.
Production Linked Incentive (PLI) for Nuclear
To stop importing expensive components, India is launching
a ₹15,000 crore PLI scheme for the nuclear supply chain.
- This
incentivizes Indian manufacturers (like L&T, Godrej, and BHEL) to
produce "Nuclear-Grade" pressure vessels, steam generators, and
specialized valves. The goal is to make India a global export hub for SMR
components, much like it has done with mobile phones and pharmaceuticals.
Captive Nuclear Policy for AI & Data Centres
Data centres need 99.99% uptime, which solar cannot provide
without massive battery costs.
- A
new "Captive SMR Policy" allows Data Centre Parks to be
co-located with SMRs. These reactors will be granted "Captive
Status," exempting them from cross-subsidy surcharges and allowing
them to sell excess power back to the grid during low-data-load hours.
Standardizing the "Bharat Small Reactor" (BSR)
India is standardizing on the BSR-220 and
the BSMR-200 (Light Water Reactor).
- The
BSR is a refined version of our 220 MW PHWR technology. By freezing
the design, NPCIL and private partners can order components in bulk (Fleet
Mode). This "factory-line" approach reduces costs through
"Learning by Doing," where the 10th reactor is 30% cheaper than
the 1st.
International Strategic Joint Ventures
India is inviting global leaders like Holtec (USA),
Rosatom (Russia), and EDF (France) for technology transfer.
- Under
the "Make in India" mandate, foreign OEMs must manufacture at
least 60% of the SMR components within India. This ensures that while the
technology may be foreign, the jobs and industrial capacity remain
domestic.
Accelerating Thorium-SMR R&D
India holds 25% of the world's thorium.
- The
government has allocated ₹20,000 crore for the Nuclear Energy
Mission, part of which is dedicated to the Advanced Heavy Water
Reactor (AHWR). The goal is to create a "Thorium-SMR" that
can be deployed by 2035, finally breaking India's dependence on imported
Uranium.
National Skilling Mission: "Nuclear-Tech"
To manage a fleet of 500+ SMRs, India needs a massive
workforce.
- The
government is establishing Nuclear Energy Universities and
specialized M.Tech programs in IITs. A "Private Nuclear
Operator" certification is being introduced to allow non-government
engineers to qualify for reactor operations and safety management.
Public Perception: The "Safe-Neighbour" Campaign
Addressing "NIMBY" (Not In My Backyard) is crucial
for urban SMR siting.
- A
nationwide campaign is highlighting the "Passive Safety" of
SMRs—reactors that shut down naturally without electricity or pumps in an
emergency. Live "Safety Dashboards" for existing plants are
being made public to build trust through radical transparency.
HALEU & Fuel Security Alliances
Modern SMRs often require High-Assay Low-Enriched
Uranium (HALEU).
- India
is negotiating long-term fuel-swap agreements with the US and Russia.
Simultaneously, BARC is scaling up domestic enrichment facilities to
ensure that a "fuel blockade" cannot paralyze the AI-driven
economy in the future.
Creating a "Strategic Site Bank"
Finding land is the #1 cause of project delays in India.
- The
Department of Atomic Energy (DAE) is pre-identifying 50–100 sites (mostly
coastal and near industrial clusters) and obtaining "In-Principle
Environment Clearance." These sites will be held in a
"Bank," ready to be auctioned to private developers who can
start construction on Day 1.
Direct Funding for "First-of-a-Kind" (FOAK) Units
The first few SMRs are always the most expensive.
- The
government is providing Viability Gap Funding (VGF) to
cover the "innovation premium" of the first five indigenous
SMRs. Once the technology is proven and "de-risked," the market
will take over, and subsequent units will be funded entirely by private
equity and commercial debt.
Timeline Map (2025–2047)
To scale India’s nuclear capacity from the current ~8 GW to
the 100 GW target the following Schedule may be considered.
Phase 1: Foundation & Deregulation (2025 – 2027)
Focus: Removing legal barriers and inviting private capital.
- 2025
(Completed):
Passage of the SHANTI Act. Repeal of the 1962 Atomic Energy Act and
2010 CLND Act.
- 2026
(March):
Deadline for the Bharat Small Reactor (BSR) tender. Major players
(Reliance, Adani, Tata) submit bids for 16 identified sites.
- 2026
(Mid): AERB
receives statutory status; launches the "One-Window" digital
licensing portal for SMR type-certification.
- 2027: Notification of the Nuclear
Liability Fund rules, removing "Supplier Liability" and capping
operator risks at ₹3,000 crore. SMR projects receive "Infrastructure
Status," triggering the first wave of Nuclear Green Bonds.
Phase 2: Pilot Deployment & Captive Power (2028 – 2033)
Focus: Powering AI Data Centres and heavy industry.
- 2028: Launch of the Nuclear PLI
Scheme. Indian vendors (L&T, Godrej) begin factory-scale
production of SMR modules.
- 2029: Groundbreaking for the first "Coal-to-Nuclear"
conversion project at a retired thermal plant site.
- 2030: Commissioning of the Nuclear
Energy Mission’s first "Demonstration Unit" (BSR-220).
- 2031: First Captive SMR
dedicated to an AI Data Centre cluster goes operational, providing 24/7
carbon-free baseload.
- 2033
Target: 5
Indigenous SMRs (BSR-220 & BSMR-200) operational. Total capacity
reaches ~22 GW.
Phase 3: Mass Manufacturing & Scaling (2034 – 2040)
Focus: Standardization and fleet-mode execution.
- 2034: Activation of the Strategic
Site Bank; 50+ pre-cleared sites auctioned to private consortia.
- 2035: Commercial launch of Thorium-ready
SMRs following successful AHWR (Advanced Heavy Water Reactor) trials.
- 2036: National "Nuclear-Tech"
Skilling Mission produces its 50,000th certified private-sector
nuclear technician.
- 2038: India begins exporting BSR
units to Global South nations under the International Joint Venture
framework.
- 2040: Total nuclear capacity crosses 50
GW. Nuclear becomes a "must-run" baseload for the national
grid.
Phase 4: The 100 GW Milestone (2041 – 2047)
Focus: Energy independence and Net Zero.
- 2042: Integration of SMRs into a National
Smart Grid, allowing decentralized power sharing between industrial
hubs.
- 2045: All retired coal plants in
India successfully replaced by SMR clusters.
- 2047: The 100 GW Target is
achieved. Nuclear power accounts for roughly 25% of India’s total
electricity generation, fulfilling the Viksit Bharat vision of
energy security.
Summary of the "100 GW Roadmap" (Capacity
Projection)
|
Year |
Target Capacity |
Primary Driver |
|
2025 |
~8.2 GW |
Existing Large PHWRs |
|
2032 |
~22.4 GW |
Completion of 700MW PHWR fleet |
|
2040 |
~55.0 GW |
Massive Private SMR deployment |
|
2047 |
100.0 GW |
SMRs, Thorium units, and Foreign LWRs |
Design Comparison
The following table compares the flagship indigenous designs
against leading foreign technologies like the Russian RITM-200 (already
operational) and the American NuScale (NRC-approved).
Comparison: BSR-220 vs. Foreign SMR Technology
|
Feature |
Bharat Small Reactor (BSR-220) |
Bharat Small Modular Reactor (BSMR-200) |
Foreign SMR (e.g., NuScale/Rosatom) |
|
Technology Base |
PHWR (Pressurised Heavy Water) |
PWR (Pressurised Water Reactor) |
PWR (Light Water Reactor) |
|
Fuel Type |
Natural Uranium (Domestic) |
Slightly Enriched Uranium (SEU) |
High-Assay LEU (HALEU) |
|
Coolant / Moderator |
Heavy Water ($D_2O$) |
Light Water ($H_2O$) |
Light Water ($H_2O$) |
|
Power Output |
220 MWe |
200 MWe |
50–300 Mwe |
|
Siting Focus |
Industrial Clusters (Captive) |
Data Centres / Smart Cities |
Remote/Off-grid/Maritime |
|
Safety System |
Enhanced Active + Passive |
Fully Passive (Walk-away safe) |
Fully Passive |
|
Supply Chain |
100% Indigenous (Proven) |
70% Indigenous (R&D Stage) |
Imported (High Dependency) |
|
Best For |
Hard-to-abate sectors (Steel/Alum) |
AI/Digital Infrastructure |
High-efficiency peak loads |
Key Technical Insights
The BSR-220: The "Workhorse" Strategy
The BSR-220 is effectively a "shrunk" and
modularized version of India's existing PHWR fleet.
- The
Advantage:
Because it uses Natural Uranium, India does not need to rely on the
Nuclear Suppliers Group (NSG) for enriched fuel.
- Manufacturing: Indian companies like L&T
already have the blueprints and "N-Stamp" certifications to
build these today. This is why the first RFP for BSRs was issued in early
2025—it is the fastest route to adding capacity.
The BSMR-200: The "AI Partner"
The BSMR-200 (and its smaller 55 MWe sibling) is a Pressurised
Water Reactor (PWR).
- The
Innovation:
Unlike the BSR, it uses "Light Water" and Slightly Enriched
Uranium. This makes the reactor much more compact—ideal for locating
within the high-security perimeters of AI Data Centres.
- Passive
Safety: It is
designed with an "integral layout" where the steam generators
and pumps are inside the reactor vessel, drastically reducing the risk of
pipe breaks or coolant leaks.
Foreign SMRs (NuScale/RITM): The "Efficiency
Benchmarks"
Foreign designs like Russia’s RITM-200 are already
powering icebreakers and floating plants.
- NuScale
(USA): Features
a "natural circulation" design with no pumps at all, making it
incredibly quiet and safe.
- The
Trade-off:
While these are highly efficient, they require HALEU fuel (enriched
to 5–20%), which India currently has limited capacity to produce.
Importing these technologies under the SHANTI Bill would likely involve
"Fuel Leasing" agreements with the US or Russia.
The "SMR Innovation Hub" (BARC-DAE)
Under the 2025 Budget, ₹20,000 crore was allocated to
establish the SMR Innovation Hub. Its primary goal is to close the gap
between the BSR (Proven Tech) and the BSMR (Future Tech).
- By
2030: India
aims to have its first BSMR-200 prototype operational at Tarapur.
- By
2033: A fleet
of at least five indigenous SMRs will be grid-connected.