Nuclear Power Plants of India: Location, Capacity and Collaborating Countries
Nuclear power questions are a classic UPSC trap because three different facts get tangled together for every plant — which state it is in, which reactor technology it uses, and which foreign country (if any) helped build it. This Smart Study Toolkit separates all three threads — location, technology, and collaboration — into one clean memory map so you stop swapping Tarapur for Rawatbhata or Russia for Canada.
📌 Revision Pointers
Reactor-tech rule: BWR only at Tarapur, VVER/PWR only at Kudankulam, PHWR everywhere else.
Collaboration rule: USA (Tarapur) and Canada (Rawatbhata) both exited in 1974; Russia (Kudankulam) is the only one still active.
Planned ≠ built: Jaitapur (France) and Kovvada (USA) are proposed projects, not operating plants.
Three-stage order: Uranium → Plutonium/Fast Breeder → Thorium; only Stage 1 is commercial at scale.
2025–26 targets: SHANTI Act 2025, 5 SMRs by 2033, 100 GWe nuclear capacity by 2047.
1. Operational Nuclear Power Stations — Where Is Each One?
Tarapur (Maharashtra) - TAPS-1 & 2 (BWR, 160 MWe each) plus TAPS-3 & 4 (PHWR, 540 MWe each) — 1,400 MWe total; India's & Asia's first commercial nuclear plant, commissioned 1969.
Mnemonic Hook: "Tarapur = The Ancient Plant (oldest in the country)."
Rawatbhata (Rajasthan) - RAPS-2 through RAPS-8 — six operating units (220–700 MWe each) plus RAPS-8 under construction; India's single biggest nuclear complex by unit count.
Mnemonic Hook: "Rawatbhata = Rajasthan's Reactor Row (most units at one site)."
Link: RAPS-1 was permanently shut down in 2004 and is not counted in today's total.
Kalpakkam (Tamil Nadu) - Officially called Madras Atomic Power Station (MAPS-1 & 2, PHWR, 220 MWe each) — but physically sited at Kalpakkam, not Chennai/Madras city.
Mnemonic Hook: "Kalpakkam carries the Madras NAME but not the Madras ADDRESS."
Link: Kalpakkam is also home to India's Fast Breeder Test Reactor and the Stage-2 PFBR — see Section 4.
Narora (Uttar Pradesh) - NAPS-1 & 2 (PHWR, 220 MWe each); India's first plant to get a secondary containment structure after a 1993 turbine-fire incident.
Mnemonic Hook: "NArora is in UP — don't let the 'Ra' sound pull it into Rajasthan."
Kakrapar (Gujarat) - KAPS-1 & 2 (220 MWe each) plus KAPS-3 & 4 (700 MWe each) — 1,840 MWe total; KAPS-3 was the first 700 MWe indigenous PHWR to go critical (2020).
Mnemonic Hook: "Kakrapar Kickstarted the 700-MWe class."
Kaiga (Karnataka) - KGS-1 to 4 (PHWR, 220 MWe each, 880 MWe total); KGS-5 & 6 (700 MWe each) are under construction.
Mnemonic Hook: "Kaiga is in Karnataka, not Kerala — the single most mixed-up plant-state pair."
Kudankulam (Tamil Nadu) - KKNPP-1 & 2 (VVER-1000, 1,000 MWe each, 2,000 MWe total) operational; KKNPP-3,4,5,6 under construction; India's only Russian-design (VVER) site and, once complete, its single largest nuclear complex.
Mnemonic Hook: "Kudankulam = Kremlin's reactors on Indian soil."
2. Reactor Technology — Three Types, Don't Mix Them Up
BWR (Boiling Water Reactor) - Used only at TAPS-1 & 2, Tarapur; India's oldest reactor design, built with US technology.
Mnemonic Hook: "Boiling happens only at the Beginning (Tarapur, 1969)."
PHWR (Pressurised Heavy Water Reactor) - India's workhorse design — runs on natural uranium with heavy water as moderator and coolant; used at every site except Tarapur-1/2 and Kudankulam; capacity has grown indigenously from 220 to 540 to 700 MWe.
Mnemonic Hook: "PHWR = our Homegrown Workhorse Reactor."
VVER / PWR (Water-Water Energetic Reactor) - Russian design used only at Kudankulam; runs on enriched uranium with ordinary (light) water as moderator and coolant.
Mnemonic Hook: "VVER = Very, Very Enriched uranium, from Russia."
3. Foreign Collaboration — Match the Plant to the Country
USA → Tarapur (1969, ended 1974) - Built by General Electric & Bechtel under the 1963 India-US-IAEA agreement; after India's 1974 Pokhran-I test, the US stopped honouring the fuel-supply deal — later fuel came from France, China and Russia under IAEA safeguards.
Mnemonic Hook: "Tarapur's Test came before the Test (1974) ended US help."
Canada → Rawatbhata (1973, ended 1974) - RAPS-1 & 2 were built with Canada's Atomic Energy of Canada Limited (CANDU design); Canada withdrew immediately after Pokhran-I, forcing India to finish RAPS-2 alone — the birth moment of India's indigenous PHWR programme.
Mnemonic Hook: "Canada's CANDU got Cut off after Pokhran."
Russia → Kudankulam (1988–present, ongoing) - Built under a 1988 inter-governmental agreement; the only foreign collaboration that survived and expanded after 1974, because Russia's supply was grandfathered outside the post-Pokhran sanctions regime.
Mnemonic Hook: "Kudankulam-Kremlin: the Collaboration that Continued."
France → Jaitapur, Maharashtra (planned, not yet built) - EDF-supplied EPR reactors; if completed (6 units x 1,650 MWe ≈ 9,900 MWe), it would be the world's largest nuclear power park — but as of 2026 it remains at the negotiation/offer stage, not under construction.
Mnemonic Hook: "Jaitapur-France = a Jumbo plan still on paper."
USA → Kovvada, Andhra Pradesh (planned, not yet built) - Proposed Westinghouse AP1000 reactors; talks have been ongoing for years with no construction start — a favourite 'which stage is this project at' distractor.
Mnemonic Hook: "Kovvada-Westinghouse: still just a Conversation."
4. The Three-Stage Nuclear Programme (Bhabha's Blueprint)
Stage 1 — Natural Uranium in PHWRs - India's mastered stage; natural-uranium PHWRs (Section 1's plants, minus Kudankulam) generate electricity and, as a by-product, plutonium for Stage 2.
Mnemonic Hook: "Stage 1 = Uranium Underway (fully commercial)."
Stage 2 — Plutonium in Fast Breeder Reactors - Uses the plutonium from Stage 1 with a thorium blanket; Kalpakkam's Prototype Fast Breeder Reactor (PFBR) is the flagship project for this stage.
Mnemonic Hook: "Stage 2 = Plutonium's Payoff, at Kalpakkam."
Stage 3 — Thorium-Based Reactors - Designed to exploit India's large thorium reserves (roughly a quarter of the world's) via reactors like the Advanced Heavy Water Reactor (AHWR); still at the R&D/demonstration level, not yet commercial.
Mnemonic Hook: "Stage 3 = Thorium's Turn — still Tomorrow, not Today."
5. The 2025–26 Push — SMRs and the 100 GWe-by-2047 Target
Nuclear Energy Mission (2025) - A government push to grow nuclear capacity from today's roughly 8,780 MWe to 100 GWe by 2047, as part of India's net-zero roadmap.
Mnemonic Hook: "100 by '47 — nuclear's centenary-of-independence target."
SHANTI Act, 2025 - The Sustainable Harnessing and Advancement of Nuclear Energy for Transforming India Act opens the sector to public and private participation while the Department of Atomic Energy keeps regulatory oversight.
Mnemonic Hook: "SHANTI brings peace to the rulebook — and lets private players in."
Small Modular Reactors (SMRs) by 2033 - Target of at least five indigenous SMRs operational by 2033; designs in development include the BSMR-200 (220 MWe Bharat Small Modular Reactor), SMR-55 (55 MWe), and the HTGCR (High-Temperature Gas-Cooled Reactor, up to 5 MWth, usable for hydrogen production).
Mnemonic Hook: "SMRs: Small is the new Strategy."
Quick Timeline/Flowchart
1969: TAPS-1 & 2 commissioned at Tarapur (USA / BWR)
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1973: RAPS-1 commissioned at Rawatbhata (Canada / CANDU)
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1974: Pokhran-I test → USA & Canada halt cooperation → indigenous PHWR era begins
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1988: Inter-governmental agreement signed for Kudankulam (Russia)
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2013–14: KKNPP-1 & 2 commissioned (Russia / VVER)
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2020–25: Indigenous 700 MWe PHWR era (KAPS-3, RAPS-7)
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2025: SHANTI Act passed; Nuclear Energy Mission launched
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2033 (target): 5 indigenous SMRs operational
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2047 (target): 100 GWe total nuclear capacity
Quick Revision List
Only Tarapur has BWRs (US-built); only Kudankulam has VVER/PWR (Russian-built); every other operating plant is indigenous PHWR.
Canada built Rawatbhata's first unit but withdrew after Pokhran-I (1974); the US stopped Tarapur's fuel supply the same year.
Kudankulam is India's only currently active foreign collaboration — and will be its single largest nuclear complex once all six units are complete.
Jaitapur (France/EPR) and Kovvada (USA/AP1000) are planned projects, not operational plants — don't confuse 'proposed' with 'built'.
The three-stage programme runs Uranium (Stage 1) → Plutonium/Fast Breeder (Stage 2) → Thorium (Stage 3); only Stage 1 is commercial today.
Government target: 100 GWe nuclear capacity by 2047, with 5 SMRs operational by 2033 under the SHANTI Act, 2025 framework.
Common Confusion Traps
Narora vs Rawatbhata: Narora is in Uttar Pradesh; Rawatbhata is in Rajasthan — the similar 'Ra' sound trips up more aspirants than any other pair in this list.
Kaiga's state: Kaiga sits in Karnataka, but it is very frequently mis-located in Kerala purely because of how the name sounds.
Madras Atomic Power Station's address: MAPS carries the name 'Madras' but is physically located at Kalpakkam, Tamil Nadu — not in Chennai city.
'Foreign collaboration' does not mean 'still active': The USA's (Tarapur) and Canada's (Rawatbhata) collaborations both ended in the 1970s; only Russia's (Kudankulam) continues today.
Thorium reactors are not yet commercial: Stage 3 (thorium-based reactors like the AHWR) is still at the R&D/demonstration stage — never mark it as an 'operational' reactor type.
SMRs are a distinct, newer category: BSMR-200, SMR-55 and HTGCR are 2025-era small-reactor designs targeted for 2033 — don't fold them into the existing PHWR/BWR/VVER fleet.
💭 Conclusion
Anchor to one fact: India has had genuine foreign collaboration on only three sites — the USA at Tarapur and Canada at Rawatbhata (both ended after the 1974 Pokhran test), and Russia at Kudankulam (still active today). Every other operating reactor in the country is homegrown PHWR technology.