India Nuclear Power Timeline 2026–2047: The 100 GW Race, Private Companies & SMRs
Track India's nuclear power push to 2047: current capacity, reactors under construction, Bharat SMRs, private-sector entry, the PFBR and the gap to 100 GW.
India’s nuclear-power challenge fits into two numbers: roughly 8.8 GW of installed capacity today and a 100 GW ambition for 2047. Closing that gap needs far more than a few extra large reactors. India would have to accelerate its indigenous 700 MW pressurised heavy-water reactor (PHWR) programme, demonstrate small modular reactors (SMRs), settle financing and liability questions under the new SHANTI Act, 2025, bring private companies such as Tata Power, Reliance and Adani into the sector, and unlock stalled foreign projects at Jaitapur and Kovvada. The 100 GW figure is a target, not a forecast — and this page tracks the distance between the two.
Data verified: 27 August 2026. Capacity figures below lead with Department of Atomic Energy / NPCIL numbers; where the World Nuclear Association or IAEA differ, the difference is noted. Every future date is labelled target, sanctioned, under construction or expected — never as a certainty.
🧠 The 60-second answer
As of 27 August 2026 India operates roughly 24 nuclear reactors totalling about 8,780 MW (8.8 GW) gross — close to 3% of the country’s electricity generation and under 2% of installed capacity. The World Nuclear Association lists a lower net figure (~7.9 GWe) because it uses net output and excludes units in long shutdown. Eight reactors (~6 GW) are under construction. The official near-term goal is ~22,480 MW by 2031–32; the long-term goal, announced in the 2025–26 Union Budget, is at least 100 GW by 2047. Reaching it depends on the 700 MW PHWR fleet, five indigenous SMRs targeted for 2033, private-sector entry enabled by the SHANTI Act, 2025, and foreign large reactors that have not yet started construction. On today’s building pace, 100 GW by 2047 is possible but far from guaranteed.
India’s 100 GW Nuclear Target: Key Questions
What to know about India’s nuclear expansion
- Starting point: ~8.8 GW and 24 reactors in 2026 — about 8.8% of the 2047 goal.
- Nearer test: the official ~22.5 GW target for 2031–32 is far more measurable than 2047, and even it needs every under-construction reactor finished on time.
- Workhorse: the indigenous 700 MW PHWR, built in “fleet mode,” carries most of the near-term additions — Kakrapar, Rajasthan, Kaiga, Gorakhpur, Mahi Banswara.
- Stage 2 unlocked: the 500 MWe Prototype Fast Breeder Reactor reached first criticality on 6 April 2026, decades behind its original schedule.
- SMRs are still R&D: the ₹20,000 crore Nuclear Energy Mission funds three designs (BSMR, SMR-55, a gas-cooled unit); none is operating yet.
- Bharat Small Reactors: a separate 220 MW PHWR-derived captive reactor offered to industry — six firms including Tata Power, Reliance and Adani Power have responded to NPCIL’s tender.
- SHANTI Act, 2025 replaced the 1962 Atomic Energy Act and the 2010 liability law, introduced a sliding-scale operator liability cap and, for the first time, opened nuclear power to private and foreign investment — with foreign direct investment capped at 49% and the state keeping majority control. Its detailed rules were still in draft consultation in August 2026.
- Foreign large reactors at Jaitapur (EDF) and Kovvada (Westinghouse) are still pre-construction; only Russia’s Kudankulam is actively building.
- Scale check: China has roughly 55–60 GW operating and about 30 GW under construction; India’s under-construction fleet is a fraction of that, and China is adding reactors several times faster.
- NPCIL alone targets about 54 GW by 2047 — the rest of the 100 GW must come from JVs, private reactors, foreign vendors and SMRs.
Can India really reach 100 GW of nuclear power by 2047?
The direct answer, then the reasons.
Possible, but far from guaranteed. India would need to add roughly 91 GW in about 21 years — close to a ten-fold expansion — against a historical record of adding a few hundred megawatts per year. The target requires several things to go right at once, none of them certain.
The constraints stack up:
- Construction rate. India has rarely commissioned more than one reactor a year. Fleet-mode standardisation of the 700 MW PHWR is meant to change that, but the first fleet units are only now pouring concrete.
- Financing. NPCIL’s balance sheet cannot fund 100 GW. That is the explicit reason for inviting private capital and forming the NPCIL–NTPC joint venture, ASHVINI.
- Manufacturing capacity. Heavy forgings, reactor pressure vessels, steam generators and specialty steel are supplied by a small group of firms (L&T, BHEL, Walchandnagar). Scaling the supply chain takes years.
- Sites and land. Large nuclear sites face local opposition (Jaitapur, Kovvada, Mithi Virdi). SMRs on retiring coal-plant land are proposed partly to sidestep this.
- Regulatory throughput. The Atomic Energy Regulatory Board (AERB) reviews every design and site; it received statutory status only under the SHANTI Act.
- Fuel. Domestic uranium is limited; imports cover much of the fleet. A ten-fold expansion multiplies the fuel-supply problem.
- Liability and private appetite. The SHANTI Act eased supplier liability, but private firms have not yet taken final investment decisions.
- Foreign technology. Jaitapur and Kovvada together represent ~20 GW of the plan and have not started.
- SMR commercialisation. No Indian SMR has been built. The 2033 target for five units is ambitious for a first-of-a-kind programme.
This page treats 100 GW as a government target and tracks whether the milestones that feed it — the next reactor to reach commercial operation, the next PFBR step, the first SMR demonstration, the 2031–32 capacity figure — are actually moving.
What does 100 GW actually mean?
100 GW is 100,000 MW — more than eleven times today’s ~8.8 GW nuclear fleet. For context, India’s total installed electricity capacity is about 485 GW (mid-2026), of which coal is roughly 218 GW, solar around 110 GW and wind about 51 GW. Nuclear is currently under 2% of installed capacity.
Capacity comparisons can mislead, because plants run at very different capacity factors — the share of the year they actually generate. Indian nuclear plants have run at roughly 75–85% in recent years; solar in India is around 20%; coal around 60–70%. So 100 GW of nuclear would generate far more electricity annually than 100 GW of solar. If India’s nuclear fleet reached 100 GW and ran at ~80%, it would produce on the order of 700 billion units a year — comparable to a large share of today’s total consumption. That is the scale of the ambition, and the reason it is a 22-year project rather than a five-year one.
The 100 GW gap, visualised
Four states of capacity — do not read planned capacity as operating.
Where the 100 GW would come from (approximate, 2026)
Even counting every operating, under-construction and sanctioned reactor, roughly 70 GW of the 2047 target has no project attached to it yet. That is the capacity that must come from SMRs, large private and foreign reactors, and projects not yet announced. NPCIL’s own internal aim is about 54 GW by 2047; the remainder depends on ASHVINI, private Bharat Small Reactors, foreign large reactors and the SMR programme all succeeding.
India’s nuclear timeline: 1948 to 2047
Newest developments first; the institutional story runs to the bottom.
TARGET
100 GW nuclear capacity — target, not forecast
Status: Aspirational target stated in the 2025–26 Union Budget. No committed year-by-year construction plan exists for the full 100 GW.
Why it matters: It frames every nearer-term decision — fleet-mode PHWRs, the SMR mission, private-sector entry and liability reform are all justified by reference to it.
TARGET
At least five indigenous SMRs targeted for operation
Status: Target set in the 2025–26 Budget. As of August 2026 the designs (BSMR, SMR-55, a small high-temperature gas-cooled reactor) are in design and detailed-project-report stage; none is under construction.
Why it matters: SMRs are the government’s route to captive industrial power and to using retiring coal-plant sites. Missing 2033 would push the 100 GW maths further out.
OFFICIAL
~22,480 MW near-term capacity goal
Status: Official projection. Depends on completing Kudankulam 3–6, Rajasthan 7–8, the first fleet-mode PHWRs and the PFBR reaching commercial operation.
Why it matters: This is the checkpoint that will actually show whether the programme is accelerating — it is close enough that the reactors responsible already exist on site.
Gorakhpur first concrete; ASHVINI tenders Mahi Banswara
Development: First safety-related concrete for the Gorakhpur Haryana Anu Vidyut Pariyojana Units 1&2 (2×700 MW) began on 14 August 2026. The NPCIL–NTPC joint venture ASHVINI floated a ~₹28,000 crore Nuclear Island EPC tender for Mahi Banswara (4×700 MW, Rajasthan).
Why it matters: These are the first fleet-mode units where a JV and private EPC contracting model are being tested at scale.
Prototype Fast Breeder Reactor reaches first criticality
Development: The 500 MWe PFBR attained first criticality on 6 April 2026 after AERB clearance, formally opening Stage 2 of India’s three-stage programme. Grid connection and commercial operation are expected later in 2026.
Why it matters: Fast breeders produce more fissile material than they consume, and are the bridge to Stage 3 thorium reactors. The PFBR is roughly 12 years behind its original target date.
SHANTI Act, 2025 enacted
Development: The Sustainable Harnessing and Advancement of Nuclear Energy for Transforming India Act, 2025 replaced the Atomic Energy Act, 1962 and the Civil Liability for Nuclear Damage Act, 2010 with a single framework. It set a size-graded operator liability cap (about ₹100 crore for the smallest reactors and fuel-cycle facilities up to ₹3,000 crore for the largest plants), limited a supplier’s exposure to what the contract specifies, gave the Atomic Energy Regulatory Board statutory status, and opened nuclear power to private and foreign investment — with FDI capped at 49% and the state retaining majority control and all sensitive fuel-cycle steps.
Why it matters: It removed the single biggest legal blocker cited by foreign vendors since 2010. But the Act is a framework: the draft SHANTI Rules and draft AERB regulations that make it operational were out for public consultation into September 2026, so no private project could actually start yet.
Nuclear Energy Mission and the 100 GW goal announced
Development: The finance minister announced a Nuclear Energy Mission with a ₹20,000 crore outlay for SMR research and development, a target of at least five indigenous SMRs operational by 2033, and the statement that 100 GW of nuclear by 2047 is “essential” for the energy transition. Amendments to the Atomic Energy Act and the liability law were promised in the same speech.
Why it matters: It was the moment nuclear moved from a slow state programme to a headline energy-policy priority with money and legal reform attached.
& on
Fleet mode sanctioned; PFBR core-loading begins
Development: In 2017 the Union Cabinet sanctioned ten indigenous 700 MW PHWRs in “fleet mode” (Kaiga 5&6, Gorakhpur 1–4, Mahi Banswara 1–4, Chutka 1&2) — identical design, bulk procurement and repeat contractors to cut build time. Core-loading of the PFBR’s first fuel began in 2024, ahead of its April 2026 criticality.
Why it matters: Fleet mode is the mechanism meant to lift India’s build rate; its success or failure over 2026–2032 will largely determine the 2047 trajectory.
& 2024
First indigenous 700 MW PHWRs enter service at Kakrapar
Development: Kakrapar Unit 3 reached first criticality in 2020 and commercial operation in June 2023; Unit 4 followed in March 2024. These are India’s first 700 MW PHWRs, scaled up from the proven 540 MW design with added passive safety systems.
Why it matters: The 700 MW PHWR is the standard design for the entire near-term expansion — Rajasthan 7&8, Kaiga, Gorakhpur, Mahi Banswara all use it.
+
Kudankulam: Russian VVER reactors come online
Development: Kudankulam Unit 1 (1,000 MW VVER) was connected to the grid in 2013 and Unit 2 in 2016. Units 3&4 and 5&6 are under construction under successive India–Russia agreements.
Why it matters: Kudankulam is India’s only large foreign-technology site actively building, and is planned to become its single largest nuclear station at six units.
Civil Liability for Nuclear Damage Act
Development: India enacted a nuclear liability law with a ~₹1,500 crore operator cap and, controversially, a supplier right-of-recourse (Section 17b) that let operators claim against equipment suppliers after an accident.
Why it matters: The supplier clause — a response to the Bhopal disaster — deterred Westinghouse, GE and Areva/EDF from proceeding, freezing the reactor imports the 2008 deal was meant to enable. It was the problem the SHANTI Act set out to fix 15 years later.
India–US civil nuclear agreement and NSG waiver
Development: After separating its civilian and military facilities and accepting IAEA safeguards on civilian reactors, India received a Nuclear Suppliers Group waiver in September 2008, ending the trade embargo imposed after its 1974 nuclear test.
Why it matters: It restored India’s access to imported uranium and foreign reactor technology — but the immediate wave of reactor construction it promised did not materialise, largely because of the 2010 liability law.
& on
Tarapur, then the indigenous PHWR programme
Development: India’s first commercial nuclear station, Tarapur (two US-built boiling water reactors), started in 1969. After the 1974 test and the resulting embargo, India shifted to indigenous pressurised heavy-water reactors fuelled by natural uranium, commissioning units at Rawatbhata, Kalpakkam, Narora, Kakrapar and Kaiga through the 1980s and 1990s.
Why it matters: Isolation forced self-reliance. The PHWR became the backbone of the fleet precisely because it does not need enriched uranium, which India could not import.
& 1954
Atomic Energy Commission and Department of Atomic Energy
Development: India set up the Atomic Energy Commission in 1948 and the Department of Atomic Energy in 1954, both driven by physicist Homi Bhabha, who also framed the three-stage programme built around India’s thorium reserves.
Why it matters: The institutional architecture — state-owned, DAE-led, secrecy-bound — shaped the sector for 75 years. The SHANTI Act and private-sector entry are the first structural break from it.
India’s nuclear reactor tracker
Operating, under construction, sanctioned and proposed — kept in separate categories.
| Site / units | State | Technology | Capacity | Status | Operator |
|---|---|---|---|---|---|
| Tarapur 1–4 | Maharashtra | BWR (1–2), PHWR (3–4) | 2×160 + 2×540 MW | 🟢 Operating | NPCIL |
| Rawatbhata (RAPS) 1–6 | Rajasthan | PHWR | ~1,180 MW total in service | 🟢 Operating (RAPS-1 in long shutdown) | NPCIL |
| Kudankulam 1–2 | Tamil Nadu | VVER-1000 (Russia) | 2×1,000 MW | 🟢 Operating | NPCIL |
| Kakrapar 1–4 | Gujarat | PHWR (220 & 700 MW) | 2×220 + 2×700 MW | 🟢 Operating (Unit 4 commercial 2024) | NPCIL |
| Kaiga 1–4 | Karnataka | PHWR | 4×220 MW | 🟢 Operating | NPCIL |
| Madras / MAPS 1–2 | Tamil Nadu | PHWR | 2×220 MW | 🟢 Operating | NPCIL |
| Narora 1–2 | Uttar Pradesh | PHWR | 2×220 MW | 🟢 Operating | NPCIL |
| Rajasthan 7–8 (RAPP) | Rajasthan | PHWR-700 | 2×700 MW | 🟢/🟠 Unit 7 at full power Feb 2026; Unit 8 commissioning | NPCIL |
| Kudankulam 3–6 | Tamil Nadu | VVER-1000 (Russia) | 4×1,000 MW | 🟠 Under construction | NPCIL |
| Kaiga 5&6 | Karnataka | PHWR-700 | 2×700 MW | 🟠 Under construction (first concrete 2026) | NPCIL |
| Gorakhpur (GHAVP) 1&2 | Haryana | PHWR-700 | 2×700 MW | 🟠 Under construction (first concrete Aug 2026) | NPCIL |
| PFBR | Tamil Nadu (Kalpakkam) | Fast breeder (FBR) | 500 MWe | 🟠 Criticality Apr 2026; commercial operation pending | BHAVINI |
| Mahi Banswara 1–4 | Rajasthan | PHWR-700 | 4×700 MW | 🔵 Sanctioned; early works under ASHVINI | ASHVINI (NPCIL–NTPC) |
| Chutka 1&2 | Madhya Pradesh | PHWR-700 | 2×700 MW | 🔵 Sanctioned | NPCIL |
| Gorakhpur 3&4 | Haryana | PHWR-700 | 2×700 MW | 🔵 Sanctioned | NPCIL |
| Jaitapur 1–6 | Maharashtra | EPR (France) | 6×~1,650 MW (~9,900 MW) | ⚫ Proposed; pre-construction | NPCIL / EDF |
| Kovvada 1–6 | Andhra Pradesh | AP1000 (US) | 6×~1,100 MW | ⚫ Proposed; pre-construction | NPCIL / Westinghouse |
| Bharat Small Reactors | Multiple (16 sites shortlisted) | PHWR-derived ~220 MW | Per-unit ~220 MW | ⚫ Proposed; industry tender stage | NPCIL + private captive users |
Capacities are indicative and drawn from NPCIL, DAE and World Nuclear Association data as of August 2026. A reactor is only ever counted in one category; when a unit moves from “under construction” to “operating,” this table and the dashboard are updated.
What powers India’s nuclear fleet today?
PHWR (pressurised heavy-water reactor) — India’s workhorse. Uses natural (unenriched) uranium and heavy water as moderator and coolant. About 90% of the fleet. Indigenous 220, 540 and now 700 MW designs.
VVER (Russian pressurised water reactor) — the 1,000 MW units at Kudankulam. Uses enriched uranium and light water; fuel supplied by Russia.
BWR (boiling water reactor) — the two original 1969 units at Tarapur, US-built, now the oldest running reactors in India.
Fast breeder reactor (FBR) — the PFBR at Kalpakkam, which reached criticality in April 2026. Uses a plutonium-uranium oxide core and breeds more fuel than it burns; Stage 2 of the three-stage plan.
SMRs and future designs — the Bharat Small Modular Reactor, SMR-55 and a high-temperature gas-cooled reactor are all in development. None is operating.
India’s three-stage nuclear strategy
Bhabha’s 1954 roadmap — and where each stage actually stands.
Stage 1 — PHWRsMature
Natural-uranium heavy-water reactors that also produce plutonium in spent fuel. This is essentially the entire operating fleet today.
Stage 2 — Fast breeder reactorsJust started
Reactors fuelled by the plutonium from Stage 1, wrapped in a thorium “blanket” that breeds uranium-233. The PFBR reached criticality in April 2026; two larger commercial breeders are planned at Kalpakkam.
Stage 3 — Thorium systemsResearch
Reactors running on uranium-233 bred from thorium, aimed at exploiting India’s large thorium reserves. The Advanced Heavy Water Reactor design is complete but unbuilt; the KAMINI research reactor at Kalpakkam is the only U-233-fuelled reactor operating anywhere.
Thorium is central to India’s long-term energy security, but no thorium reactor supplies the grid today, and commercial Stage 3 power is realistically decades away. Claims that India “runs on thorium” or could “switch to thorium” are wrong: thorium is fertile, not directly fissile, and must first be converted to uranium-233 inside a reactor.
Small modular reactors: what India is actually building
An SMR is a nuclear reactor of roughly 300 MWe or less, designed for factory manufacture and modular on-site assembly. India is interested in SMRs for captive power at hard-to-abate industries (steel, aluminium, cement), for siting on retiring coal-plant land with existing grid connections and water, and for remote or off-grid industrial demand. Globally SMRs are still at an early commercial stage; none is yet operating in India.
Bharat Small Reactor vs Bharat Small Modular Reactor
The two terms are different programmes and are easy to confuse:
- Bharat Small Reactor (BSR) — a ~220 MW reactor derived from the proven indigenous PHWR, offered to industrial users for captive power. NPCIL builds and operates it; the industrial partner funds it and takes the electricity. NPCIL issued a request for proposals in December 2024; the deadline was extended to 31 March 2026.
- Bharat Small Modular Reactor (BSMR) — a genuinely new modular design in the ~200–300 MWe range being developed by BARC and NPCIL. A BSMR-300 detailed project report was released on 14 August 2026. This is the design meant to be replicable and, eventually, exportable.
- SMR-55 — a 55 MWe design aimed at smaller or remote loads.
- High-temperature gas-cooled reactor — a small (~5 MW-thermal) unit aimed at hydrogen production.
Published specifications for these designs are still evolving; figures here follow BARC, NPCIL and Budget documents and should be treated as provisional.
₹20,000 crore Nuclear Energy Mission
Announced: Union Budget 2025–26, 1 February 2025. Outlay: ₹20,000 crore, primarily for SMR research, development and demonstration. Target: at least five indigenously developed SMRs operational by 2033. Legal support: amendments to the Atomic Energy Act and the liability law — delivered through the SHANTI Act, 2025.
Large reactor vs SMR
| Factor | Large reactor | SMR |
|---|---|---|
| Typical output | 700–1,650 MWe per unit | Up to ~300 MWe per unit |
| Project scale | Large, multi-year civil works | Smaller per unit; modular assembly |
| Total project capital | Higher per project | Lower per project (but often built in groups) |
| Cost per kW | Project-specific; benefits from scale | Uncertain; first-of-a-kind premium likely |
| Deployment maturity | Established worldwide | Early commercial stage globally |
| Grid role | Large baseload | Baseload, captive power, coal-site replacement |
| Industrial captive power | Less typical | A core proposed use case |
SMRs are not automatically cheaper per unit of electricity. Their appeal is a smaller, more financeable project size and shorter on-site construction, not a lower cost per kilowatt-hour — which for first-of-a-kind units may be higher. The distinction between lower total project cost and lower cost per unit of electricity matters and is often blurred in promotional material.
Why private companies matter to the 100 GW target
For 75 years, nuclear generation in India was reserved for the state — effectively NPCIL and BHAVINI. The SHANTI Act, 2025 changed that in principle: it lets private and foreign investors take equity in nuclear power projects (capped at 49%, with the state keeping majority control) and lets private firms lead engineering, procurement, construction and plant operation. The reason is capital — NPCIL cannot finance 100 GW alone — plus manufacturing, project-execution capacity and captive industrial demand. How far this goes in practice depends on the SHANTI Rules, still in draft as of August 2026.
What is actually happening, by category:
- Joint venture: ASHVINI (Anushakti Vidyut Nigam Ltd), an NPCIL–NTPC JV, has been assigned the Mahi Banswara project (4×700 MW, Rajasthan) and has floated a ~₹28,000 crore Nuclear Island EPC tender for it.
- Bharat Small Reactor tender: six firms — Hindalco, Jindal Steel & Power, Tata Power, Reliance Industries, JSW Energy and Adani Power — have submitted documents to NPCIL’s BSR request for proposals, identifying 16 candidate sites across six states.
- NTPC’s own ambition: the state power giant has spoken of building around 30 GW of nuclear capacity by 2047 and joined the World Nuclear Association.
Who wants to enter India’s nuclear market?
| Company | Type of interest | Vehicle / route | Status |
|---|---|---|---|
| NTPC | Large PHWRs + SMRs | ASHVINI JV with NPCIL; BARC talks | Confirmed JV; Mahi Banswara assigned |
| Tata Power | Captive small reactors | NPCIL BSR tender | Reported interest; documents submitted, no FID |
| Reliance Industries | Captive small reactors | NPCIL BSR tender | Reported interest; documents submitted, no FID |
| Adani Power | Captive small reactors | NPCIL BSR tender | Reported interest; NDA stage, no FID |
| JSW Energy | Captive small reactors | NPCIL BSR tender | Reported interest; NDA stage, no FID |
| Jindal Steel & Power | Captive power for steel | NPCIL BSR tender | Reported interest; documents submitted, no FID |
| Hindalco | Captive power for aluminium | NPCIL BSR tender | Reported interest; documents submitted, no FID |
Foreign reactor companies and India
| Company | Country | Technology | Indian site | Status |
|---|---|---|---|---|
| Rosatom | Russia | VVER-1000 | Kudankulam 3–6 | 🟠 Under construction |
| EDF | France | EPR (6 units) | Jaitapur, Maharashtra | ⚫ Pre-construction; techno-commercial talks; MoU with NTPC 2025 |
| Westinghouse | USA | AP1000 (6 units) | Kovvada, Andhra Pradesh | ⚫ Pre-construction; US cleared Westinghouse to do licensing/design work in India (2025); no project agreement |
| Holtec | USA | SMR-160 / SMR-300 | Not sited | ⚫ US 10CFR810 authorisation to transfer SMR technology to Indian partners; no project |
| GE Vernova / GE Hitachi | USA / Japan | BWRX-300 SMR | Not sited | ⚫ Reported interest / early discussions only |
The main unresolved issue for every foreign vendor has been liability. The SHANTI Act eased it by limiting a supplier’s exposure to what its contract specifies. Foreign firms can also now take up to 49% equity in a project, but with an Indian entity as majority owner and licensed operator their core role stays technology supply and services. Kovvada and Jaitapur still need commercial and financing terms settled before any concrete is poured.
Kudankulam, Jaitapur and Kovvada
Kudankulam — the one that is building
Tamil Nadu’s Kudankulam site has two operating 1,000 MW Russian VVER units (2013, 2016) and four more under construction across two contracts. Fuel for Units 3&4 arrived in December 2025. Planned at six units, it is set to become India’s largest single nuclear station.
Jaitapur — approved on paper, not started
The Jaitapur project in Maharashtra would be the world’s largest single nuclear power station: six EDF EPR reactors, about 9,900 MW. An “Industrial Way Forward Agreement” was signed in 2018 and EDF submitted a binding techno-commercial offer, but no construction has begun. Financing, price and liability terms remain unresolved, and there is long-standing local opposition. EDF and NTPC signed an MoU in 2025 to explore Indian projects.
Kovvada — waiting on terms
The Andhra Pradesh site earmarked for six Westinghouse AP1000 reactors (~6,600 MW) has completed environmental assessment but not started construction. In 2025 Westinghouse and Larsen & Toubro formed a working group, and US export-control clearances advanced. The SHANTI Act removed the liability blocker; commercial terms are the next hurdle.
Nuclear liability and the SHANTI Act, 2025
If a nuclear accident causes damage, someone has to pay compensation. India’s 2010 liability law capped the operator’s liability at about ₹1,500 crore and — unusually — gave the operator a right to recover from equipment suppliers. Foreign vendors refused to accept open-ended supplier liability, and reactor imports stalled for 15 years.
The Sustainable Harnessing and Advancement of Nuclear Energy for Transforming India Act, 2025 (SHANTI Act) was passed by both houses of Parliament on 17–18 December 2025 and received Presidential assent on 20 December 2025, replacing both the Atomic Energy Act, 1962 and the 2010 liability law with a single framework. Key changes:
- Size-graded operator liability: from about ₹100 crore for the smallest reactors and fuel-cycle facilities up to ₹3,000 crore for the largest plants (those above roughly 3,600 MW), replacing the flat ₹1,500 crore cap. Damages beyond the operator’s cap stay backed by the Union up to 300 million SDR (about ₹3,900 crore).
- Supplier exposure limited to what the contract specifies, replacing the 2010 law’s open-ended right of recourse against equipment suppliers.
- Private and foreign investment allowed for the first time, capped at 49% FDI under the automatic route, with the Central Government or a government company keeping majority control. Enrichment, reprocessing and fissile-material accounting stay exclusively with the state.
- Regulator: the AERB was given statutory status rather than being replaced.
The Act is a framework. The draft SHANTI Rules 2026 and draft AERB regulations that make it operational — covering the single-window composite licence, insurance, financial security and decommissioning funds — were released for public consultation running into September 2026. Until they are notified, no private nuclear project can actually begin.
⚠️ A note on terminology
The SHANTI Act is real, enacted law — passed in December 2025. Its “rules,” sometimes cited as separate legislation, are the subordinate SHANTI Rules and AERB regulations made under it, which as of August 2026 are still in draft. This page treats the Act as in effect and the operational rules as pending.
Regulatory and legal timeline
| Year | Development | Effect |
|---|---|---|
| 2010 | Civil Liability for Nuclear Damage Act | Operator cap + supplier recourse; froze foreign reactor deals |
| 2015–16 | India Nuclear Insurance Pool; memorandum with the US on liability | Partial workaround; did not fully reassure suppliers |
| Feb 2025 | Budget promises Atomic Energy Act + liability amendments | Signalled structural reform and private entry |
| Dec 2025 | SHANTI Act, 2025 enacted (assent 20 Dec) | New liability scale; private + up to 49% foreign investment allowed; AERB made statutory |
| 2026 | Draft SHANTI Rules and AERB regulations out for consultation | Composite licence, insurance, decommissioning funds; not yet notified — gates when private projects can start |
Before 100 GW, India has a much closer test
The 2031–32 checkpoint — about 22,480 MW — is far more measurable than 2047. Every reactor meant to deliver it already exists on a construction site: Kudankulam 3–6, Rajasthan 8, Kaiga 5&6, Gorakhpur 1&2, plus the PFBR reaching commercial operation. Going from ~8.8 GW to ~22.5 GW is a jump from roughly a few hundred megawatts of additions per year to around 2 GW per year. If India misses the 2031–32 number, the 2047 target becomes arithmetic without a plan.
How much nuclear capacity is still missing?
Accounted for (approx.)
- Operating: ~8.8 GW
- Under construction: ~6 GW
- Sanctioned / approved: ~15 GW
- Subtotal: ~30 GW
Still to be found
- 2047 target: 100 GW
- Minus the ~30 GW above
- Gap needing new projects: ~70 GW
- Sources: SMRs, private BSRs, Jaitapur, Kovvada, unannounced
As a scale illustration only: ~70 GW is about 100 reactors of 700 MW each, or roughly 45 large 1,600 MW units. India’s real 2047 mix would combine PHWRs, large foreign reactors, fast breeders and SMRs — this is not a construction forecast, just a sense of the size of the task. Dividing ~91 GW of total additions by 21 years gives an average of about 4.3 GW per year — more than four times India’s best sustained rate.
Why is India pushing nuclear now?
Several pressures at once:
- Electricity demand growth — among the fastest of any large economy, driven by industrialisation, air-conditioning and rising incomes.
- Coal dependence — about 70% of generation. India wants firm low-carbon capacity that is not weather-dependent.
- Decarbonisation — a net-zero-by-2070 pledge needs baseload that is not coal.
- Renewables integration — as solar and wind grow, the grid needs firm capacity to balance them; nuclear is one option alongside storage and hydro.
- Energy security — domestic reactors reduce exposure to imported fuel price shocks.
- Industrial heat and hydrogen — high-temperature reactors and SMRs are being examined for process heat and green hydrogen.
Data-centre and AI electricity demand is part of the global backdrop, but India’s nuclear expansion is driven mainly by overall demand growth and coal substitution, not by data centres specifically.
Nuclear, solar and coal — not a straight contest
| Factor | Nuclear | Solar | Coal |
|---|---|---|---|
| Operating CO₂ | Very low | Very low | High |
| Dispatch profile | Firm, round-the-clock | Variable (daytime) | Firm |
| Indian capacity factor | ~75–85% | ~20% | ~60–70% |
| Build time | Long (years) | Short (months) | Medium |
| Land per unit of output | Compact plant footprint | Large generation footprint | Plant plus mining |
| Air pollution | Very low | Very low | Significant |
| Waste | Radioactive waste, managed | End-of-life panels | Ash plus emissions |
| Storage need | Not inherent | Needed for firm supply | Not inherent |
The useful framing is not “nuclear versus solar.” India’s plan uses both: solar and wind for cheap variable energy, nuclear for firm low-carbon capacity, and storage, transmission and demand management to tie them together. A 1 GW nuclear plant and 1 GW of solar do not produce the same annual electricity — the nuclear plant generates roughly four times as much, because it runs most of the year.
India vs China vs the world
| Country | Operating capacity | Reactors | Nuclear share of power | Under construction |
|---|---|---|---|---|
| United States | ~97 GW | ~94 | ~18% | Minimal |
| France | ~61 GW | 56 | ~65% | 1 |
| China | ~58 GW | ~57 | ~5% | ~30 (~30 GW) |
| Russia | ~28 GW | ~36 | ~19% | Several |
| India | ~8.8 GW | 24 | ~3% | 8 (~6 GW) |
Figures are approximate, drawn from IAEA PRIS and World Nuclear Association data through 2026, and every country’s fleet will change by 2047. The honest comparison with China is not “India is beating China” or “India is decades behind” — it is that China has several times more capacity under construction and is adding reactors far faster, and has itself set targets well above 100 GW for the 2030s. If India reaches 100 GW, that fleet would be comparable in size to France’s or the United States’ today — though every country’s fleet will also change by 2047.
Fuel, waste and thorium
Where India gets uranium
Domestic uranium comes mainly from Uranium Corporation of India mines in Jharkhand (Jaduguda) and Andhra Pradesh (Tummalapalle), but it is not enough for the full fleet. Under post-2008 safeguards agreements India imports uranium from Russia, Kazakhstan, Canada, Australia, Uzbekistan, Namibia and Mongolia. PHWRs use natural uranium; the Russian VVERs at Kudankulam use enriched fuel supplied by Russia.
What happens to the waste
India follows a closed fuel cycle: spent fuel is reprocessed to recover plutonium and uranium for reuse, rather than being sent straight to disposal. High-level waste is vitrified (turned to glass) and stored; a deep geological repository is a long-term plan, not an operating facility.
Why India doesn’t already run on thorium
Thorium is fertile, not fissile: it cannot sustain a chain reaction by itself. It must be placed in a reactor and converted to uranium-233 first, which is why thorium sits in Stage 3, after fast breeders. India has the design (the Advanced Heavy Water Reactor) but has not built a commercial thorium reactor.
Fission vs fusion — not the same thing
Every reactor discussed on this page uses nuclear fission — splitting heavy atoms like uranium and plutonium. Nuclear fusion — joining light atoms like hydrogen, the process that powers the Sun — is a separate technology still at the experimental stage worldwide, including at ITER, which India helps fund. Fusion is not part of India’s 100 GW plan. For that story, see our nuclear fusion timeline.
What a nuclear buildout means for Indian manufacturing
A large reactor programme pulls in a long domestic supply chain: heavy forgings and pressure vessels, steam generators, coolant pumps, control and instrumentation systems, specialty steel, turbines and generators, plus civil construction and decades of operations and maintenance jobs. India already has capable suppliers — Larsen & Toubro, BHEL, Walchandnagar Industries, Godrej & Boyce — and the fleet-mode and SMR plans are partly about giving them enough repeat orders to invest in capacity. Whether this scales to 100 GW is one of the open questions.
Is nuclear power expensive? Is it safe?
Cost
It depends heavily on financing cost, construction time, reactor design and execution. Nuclear has high upfront capital and a long asset life (often 40–60 years), low fuel cost, and real value as firm capacity — but cost overruns and delays, which have hit Indian projects historically, can make the delivered electricity expensive. There is no single “₹ per unit” figure that describes nuclear power in general.
Safety
Indian plants are regulated by the AERB and designed with defence-in-depth: multiple independent barriers, containment structures, passive cooling on newer units, and off-site emergency plans. India’s operating record has been strong. That does not eliminate the fundamental character of nuclear risk — low probability, potentially high consequence — which is why regulation, siting and emergency preparedness matter. Note that a nuclear power plant accident, such as Fukushima or Chernobyl, is a reactor and radiation event, not a nuclear-weapon explosion; the two are physically different.
Road to 100 GW — live tracker
As of 27 August 2026
This module is updated when a reactor enters commercial operation, a project moves category, a PFBR milestone occurs, an SMR design is approved, a private firm signs a confirmed project, or a Budget changes the allocation.
Can India reach 100 GW of nuclear power by 2047?
Reader prediction — not a scientific poll. Results shown are reader opinion only.
Which technology will matter most for the target?
Reader opinion only — not a forecast.
Nuclear India — things worth knowing
- India’s first reactor, Apsara (1956), was Asia’s first research reactor.
- The 1974 nuclear test triggered the technology embargo that forced India to develop its own PHWRs.
- KAMINI at Kalpakkam is the only reactor in the world fuelled by uranium-233.
- The PFBR took roughly two decades from sanction to criticality.
- NPCIL says its reactors have cumulatively generated well over 1,000 billion units (kWh) of low-carbon electricity.
- Jaitapur, if built as planned, would be the largest nuclear power station on Earth by capacity.
People also ask
India nuclear power: frequently asked questions
100 GW is the destination. The 2030s will decide whether India gets there.
India’s 2047 nuclear ambition is easy to state and hard to execute: take today’s ~8.8 GW fleet to 100 GW. The route is complicated. India has to finish the reactors already under construction, accelerate the 700 MW PHWR programme through fleet mode, turn the PFBR from a milestone into a working power station, convert the SMR programme from R&D into licensed reactors, and find out how much capital and technology private and foreign companies can realistically bring under the new SHANTI Act framework.
So the 100 GW figure is best treated as a destination, not a prediction. The milestones that matter now are nearer: the next reactor to reach commercial operation, the next PFBR step, the first indigenous SMR demonstration, the next large project to move from approval to construction, and India’s actual nuclear capacity in 2031–32. Those will show whether the 2047 target is turning from a policy ambition into an executable construction programme.
⚠️ Editorial note — how we verify nuclear-project status
Operating: commercial generation officially confirmed. Under construction: physical construction officially underway. Sanctioned: government or project approval exists but construction has not clearly begun. Proposed: discussion or planning only. Figures are drawn from the Department of Atomic Energy, NPCIL, BHAVINI, the Atomic Energy Regulatory Board, Union Budget documents, Parliament answers, the IAEA and reputable reporting, and are marked “Data verified: 27 August 2026” where they are live values. This is an editorial explainer compiled from public sources, not investment or policy advice; where sources disagree, the disagreement is stated rather than resolved toward the most dramatic number.