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Nuclear Energy Mission targets 100 GW by 2047

A government roadmap to lift India's nuclear capacity more than tenfold — from 8.78 GW to 100 GW — backed by the newly enacted SHANTI Act opening the sector to private and public players.

What happened

Background & context

India's civil nuclear programme runs on the three-stage strategy framed by Homi Bhabha in the 1950s, designed around the country's modest uranium reserves and very large thorium reserves. Stage I uses Pressurised Heavy Water Reactors (PHWRs) fuelled by natural uranium; Stage II uses fast breeder reactors that burn the plutonium bred in Stage I while breeding more fuel; Stage III is the long-term thorium-based cycle. The PFBR being commissioned at Kalpakkam is the gateway to Stage II — which is why it carries weight far beyond its 500 MWe rating.

The institutional architecture is a family of bodies under the DAE. The Nuclear Power Corporation of India Ltd (NPCIL) builds and runs the country's commercial PHWR and light-water fleet. Bharatiya Nabhikiya Vidyut Nigam Ltd (BHAVINI) is the dedicated public-sector company set up to build and operate fast breeder reactors. Research and fuel-cycle technology come from the Bhabha Atomic Research Centre (BARC), and the independent safety regulator is the Atomic Energy Regulatory Board (AERB). The whole sector has been governed by the Atomic Energy Act, 1962, which reserved the generation of atomic energy almost entirely to the Central Government — the constraint the new legislation is meant to relax.

The "Nuclear Energy Mission" label itself comes out of the Union Budget framing, which set a 100 GW-by-2047 ambition for nuclear power as part of the wider energy-transition and net-zero-by-2070 commitments. The Parliament reply is the operational fleshing-out of that headline number: where the gigawatts come from, who is allowed to build them, and the enabling law that makes private participation legally possible.

Two further enablers sit alongside the SHANTI Act in the reply set. The first is cost: nuclear-project imports attract zero customs duty, deliberately lowering per-unit project cost, while NPCIL is building a domestic supply chain for a batch of newly approved 700 MWe PHWR units through bulk ordering with MSME preference. The 700 MWe PHWR is the indigenous workhorse — a scaled-up, fully home-grown evolution of the earlier 220 MWe and 540 MWe Indian PHWR designs — and fleet-mode construction of many identical units at once is the cost-and-speed strategy underpinning the 32 GW NPCIL is expected to add. The second enabler is the next technology wave: BARC is working on Small Modular Reactors (SMRs) for power and hydrogen, new research reactors, and isotope production for cancer therapy. SMRs — factory-built reactors typically rated under ~300 MWe — are the design class most often paired with private and captive-industrial deployment, which dovetails with the SHANTI Act's opening of the sector.

For Prelims

For UPSC: Nuclear Energy Mission = 100 GW nuclear by 2047 (from 8.78 GW now, ~3.1% of generation); SHANTI Act opens the sector to private/PSU/JV players beyond NPCIL; BHAVINI is commissioning the 500 MWe PFBR at Kalpakkam — India's Stage-II fast-breeder entry.

Why it matters

Nuclear is the one large-scale source that is both low-carbon and dispatchable — it runs around the clock irrespective of sun or wind, which solar and wind cannot. As India pushes toward net-zero by 2070 and adds vast variable renewable capacity, it needs firm, clean baseload to balance the grid; a tenfold nuclear scale-up is the answer the roadmap offers to that gap. The arithmetic of the plan is itself the story: NPCIL alone can deliver only about a third of the 100 GW, so reaching the target is impossible without bringing in PSUs, States, private capital and foreign joint ventures — and that participation was legally blocked under the Atomic Energy Act, 1962. The SHANTI Act exists to remove that block. The fast-breeder line matters separately: closing the fuel cycle through Stage II and eventually Stage III is what lets India lean on its abundant thorium rather than its scarce uranium, turning a resource constraint into a long-run advantage. The candour of the reply — that 46 of the 100 GW depend on entities that do not yet exist as nuclear builders — is also the honest admission of how much execution risk and regulatory build-out still lies ahead.

It helps to size the ambition against where India stands. At ~8.78 GW, India's nuclear fleet is a fraction of the leaders: the United States runs roughly 95–97 GW and France draws about 70% of its electricity from nuclear, against India's ~3.1% share — so the 100 GW target is less an incremental tweak than an attempt to reach, in two decades, a scale comparable to today's largest nuclear nations. The reform model also has a clear analogue: just as the power sector was opened to independent producers and the space sector was opened to private players through a dedicated authorisation framework, the SHANTI Act is the legal instrument that lets non-government entities into a domain the Atomic Energy Act, 1962 had kept closed. The difference from those earlier openings is the unusually tight safety, security and non-proliferation envelope around nuclear material, which is why the State retains control of fuel, waste and regulation even as construction and operation widen.

For Mains

Anchor
A question on India's energy transition or nuclear-power expansion can be built directly around the Nuclear Energy Mission's 100 GW-by-2047 target and the SHANTI Act's opening of the sector.
Data
Hard figures to substantiate any clean-energy or infrastructure answer: 8.78 GW today → ~22 GW by 2031-32 → 100 GW by 2047; nuclear at ~3.1% of generation; NPCIL ~32 GW, balance ~46 GW from new entrants; 18 reactors / 13,600 MW under implementation.
Way-forward
Use the SHANTI Act and private/JV participation as the concrete reform path when arguing how India can fund and accelerate baseload clean power and reduce reliance on coal.
Problematisation
The reply's own arithmetic flags the gap — NPCIL can deliver barely a third of the target, so legal, financing, liability and supply-chain reform must do the rest; a fair answer notes this execution risk.
Position
The government's stated stance: nuclear is central to firm low-carbon baseload for the net-zero-2070 pathway, and the sector must be opened beyond the public monopoly to reach scale.
Deploys into: India's energy security and clean-energy transition; infrastructure (energy) and indigenisation of strategic technology; science & technology achievements and the three-stage nuclear programme.
Department of Atomic Energy · 2026-03-19 · PRID 2242537 · PIB source ↗

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