Service of State
Department of Atomic Energy
The Department of Atomic Energy is the Government of India agency that runs the country's civil and strategic nuclear enterprise end to end, from uranium mining and heavy-water production to reactor construction, reprocessing and waste management. Established in 1954 under the direct charge of the Prime Minister, it is a seat of power because it has historically held a near-monopoly over nuclear technology, controls the public-sector reactor fleet through NPCIL and BHAVINI, and directs the three-stage programme meant to unlock India's thorium reserves. Its policy is set by the Atomic Energy Commission, which holds full executive and financial powers.
Updated
- Established
- 3 August 1954, under the Prime Minister
- Policy body
- Atomic Energy Commission (1958), with full executive and financial powers
- Headquarters
- Mumbai, Maharashtra
- Operating reactors
- 24 units, ~8,180 MWe (NPCIL, early 2026)
- Stated target
- 100 GW of nuclear capacity by 2047
- Principal utilities
- NPCIL, BHAVINI; lead lab BARC
Role
The Department of Atomic Energy (DAE) is the Government of India department that owns India’s nuclear enterprise from mine to grid. Established on 3 August 1954 under the direct charge of the Prime Minister, it controls uranium exploration and processing, nuclear-fuel fabrication, heavy-water production, reactor construction and operation, spent-fuel reprocessing and waste management, and it also runs a large basic-science and isotope-applications programme. Its policy is set by the Atomic Energy Commission, reconstituted within the department in 1958 with full executive and financial powers; the Secretary of DAE also chairs that commission, so the same office holds both the executive and the policy levers. Operationally the department works through a family of bodies: research centres led by the Bhabha Atomic Research Centre (BARC) and the Indira Gandhi Centre for Atomic Research; public-sector utilities NPCIL and BHAVINI that build and run the reactors; and fuel-cycle organisations such as the Nuclear Fuel Complex, Heavy Water Board and Uranium Corporation of India. Because it has historically held a near-monopoly over fissile material and reactor technology, the DAE is one of the most concentrated seats of technical power in the Indian state.
The department is the custodian of the three-stage nuclear power programme, the doctrine designed to move India from natural-uranium reactors through plutonium-fuelled fast breeders to a thorium-based cycle designed to draw on the country’s very large thorium reserves. That long-horizon strategy, its civil-nuclear diplomacy after the 2008 Nuclear Suppliers Group waiver, and its role as the technical base behind India’s strategic programme make the DAE central to both energy policy and strategic autonomy. Its policy neighbours include the Ministry of Power, which the reactor fleet feeds, and the Ministry of Finance, which set the 2025 Nuclear Energy Mission funding. See /service/dept-atomic-energy for the maintained dossier and the linked topic brief on India’s nuclear-energy expansion.
Desk maintained by IndiaStand editorial cycles. Officeholders are transient; this dossier tracks the institution.
Timeline since 1947
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Atomic Energy Act and first commission
The Atomic Energy Act, 1948 was enacted and a first Atomic Energy Commission set up under the Department of Scientific Research, laying the legal basis for state control of nuclear matter.
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Department of Atomic Energy created
A Presidential Order established the DAE under the direct charge of the Prime Minister, concentrating all Government business relating to atomic energy in a single department.
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Atomic Energy Commission reconstituted within DAE
A Government Resolution placed the Atomic Energy Commission inside the department and vested it with full executive and financial powers to set nuclear policy.
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Tarapur, India's first nuclear power station, commissioned
The two Tarapur boiling-water reactors near Mumbai began operation, marking the start of India's civil nuclear power generation.
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Pokhran-I nuclear test
India conducted its first nuclear explosive test, described officially as a peaceful nuclear explosion, which led to decades of external restrictions on nuclear trade.
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Tarapur 3 grid-connected, completing India's first indigenous 540 MWe PHWR pair
Tarapur 3 was connected to the grid in June 2006 with commercial operation in August, five months ahead of schedule, following its twin Tarapur 4 in 2005; the 540 MWe gross units were scaled up indigenously by NPCIL from the 220 MWe PHWR at about $1200/kW.
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Government approves the first four 700 MWe indigenous PHWRs
Approval was given for Kakrapar 3&4 and Rajasthan 7&8, the first four of eight planned 700 MWe gross PHWR units using indigenous technology; first concrete followed at Kakrapar in November 2010 and at Rajasthan in July 2011, with construction then expected to take 66 months to commercial operation.
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Civil nuclear agreement and NSG waiver
A Nuclear Suppliers Group waiver and the India-United States civil nuclear agreement reopened international nuclear cooperation for India's separated civilian facilities.
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Civil Liability for Nuclear Damage Act enacted
Parliament enacted the Civil Liability for Nuclear Damage Act, 2010, which created a channel of supplier recourse that suppliers treated as incompatible with international liability conventions; NPCIL's reluctance to indemnify vendors under it is cited as a cause of delay on Kakrapar 3&4 and Rajasthan 7&8 and of the doubling of the approved cost of Kudankulam 3&4 to Rs 39,747 crore.
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Post-Fukushima safety review of the reactor fleet
Four NPCIL taskforces reported in July 2011 on safety improvements for the Tarapur BWRs and each PHWR type, and an AERB high-level committee reported at the end of August 2011 that the Tarapur and Madras stations needed supplementary provisions for major disasters, including enhanced flood defences at Madras against tsunamis larger than that of 2004.
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Nuclear capacity targets cut from 63 GWe to 27,500 MWe by 2032
Parliament was told in December 2011 that more realistic targets were 14,600 MWe by 2020-21 and 27,500 MWe by 2032, against the 60 GWe by 2032 NPCIL had aimed for in June 2009 and the 63 GWe restated in 2011 — a formal retreat from the post-NSG expansion arithmetic.
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DAE signs bilateral safeguards arrangement with Canada's nuclear regulator
On the basis of the 2010 cooperation agreement, DAE and the Canadian Nuclear Safety Commission signed a bilateral safeguards agreement allowing trade in nuclear materials and technology for IAEA-safeguarded facilities; a comparable arrangement with Australia was signed in 2014 and finalised in November 2015, both applying essentially to uranium supply.
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Kudankulam 1 grid-connected, India's first large light-water reactor
The 932 MWe VVER V-412 supplied by Atomstroyexport was connected to the grid in October 2013 under IAEA safeguards, built and operated by NPCIL under a Russian-financed contract; unit 2 followed in August 2016. The units sit outside the three-stage programme and were intended simply to add capacity faster.
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DAE notifies nuclear export-control guidelines and prescribed-substances list
Under the Atomic Energy Act, 1962 the department notified the Guidelines for Nuclear Transfers (Exports) 2016 together with a notification on the list of prescribed substances, prescribed equipment and technology, both carried on India Code — the export-control machinery underpinning trade opened by the 2008 NSG waiver.
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Kakrapar 3 attains criticality as the first indigenous 700 MWe PHWR
Kakrapar 3 achieved first criticality in July 2020 and was connected to the grid in January 2021, about four years behind the original schedule; Kakrapar 4 was grid-connected in February 2024, and both units later received AERB licences for regular operation.
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Bharat Small Reactors specified in the 2024-25 budget, opened to industry finance
The 2024-25 budget specified setting up Bharat Small Reactors, expected to be closely based on the 220 MWe PHWR; NPCIL issued a request for proposals in December 2024 for Indian energy users to finance and build them, and by October 2025 six companies had responded, identifying 16 prospective sites across six states.
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Nuclear Energy Mission for Viksit Bharat funded at Rs 20,000 crore
The 2025-26 budget announced the Nuclear Energy Mission for Viksit Bharat with Rs 20,000 crore to develop at least five Indian-designed small modular reactors to be operational by 2033, alongside amendments to nuclear legislation to admit private participation, and stated that 100 GW of nuclear capacity by 2047 is essential for the energy transition.
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Rajasthan unit 7 starts commercial operation, third indigenous 700 MWe PHWR
RAPP-7 was connected to the Northern Grid and began commercial operation on 15 April 2025, the third indigenous 700 MWe PHWR in a series of 16 sanctioned reactors.
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Mahi Banswara four-unit project launched under the NPCIL-NTPC joint venture ASHVINI
The foundation stone was laid for the four-unit Mahi Banswara nuclear power project in Rajasthan, comprising four 700 MWe PHWRs to be deployed by the NPCIL-NTPC joint venture named ASHVINI — the first flagship build routed through a public-sector joint venture rather than NPCIL alone.
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NPCIL crosses 50 billion units in a year; AEC clears pre-project work on 10 more PHWRs
DAE's year-end review recorded NPCIL's highest generation ever at 56,681 million units in FY 2024-25, the first time it crossed 50 billion units in a financial year, avoiding about 49 million tonnes of CO2; the Atomic Energy Commission approved pre-project activities for a further 10 units of 700 MWe PHWRs over and above the 22.5 GW planned by 2032.
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SHANTI Act 2025 passed by Parliament
Parliament passed the Sustainable Harnessing and Advancement of Nuclear Energy for Transforming India Bill, repealing the Atomic Energy Act, 1962 and the Civil Liability for Nuclear Damage Act, 2010 and opening nuclear licensing to Indian private companies; it received presidential assent on 20 December 2025.
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Prototype Fast Breeder Reactor attains criticality
The 500 MWe PFBR at Kalpakkam, operated by BHAVINI, achieved first criticality after fuel loading began in October 2025, a milestone for Stage 2 of the three-stage programme.
Frequently asked
- What is Department of Atomic Energy?
- The Department of Atomic Energy is the Government of India agency that runs the country's civil and strategic nuclear enterprise end to end, from uranium mining and heavy-water production to reactor construction, reprocessing and waste management. Established in 1954 under the direct charge of the Prime Minister, it is a seat of power because it has historically held a near-monopoly over nuclear technology, controls the public-sector reactor fleet through NPCIL and BHAVINI, and directs the three-stage programme meant to unlock India's thorium reserves. Its policy is set by the Atomic Energy Commission, which holds full executive and financial powers.
- When was Department of Atomic Energy established?
- Department of Atomic Energy was established 1954-08-03.
- What does Department of Atomic Energy do?
- Its remit covers Nuclear power: construction and operation of reactors through public-sector undertakings, Nuclear fuel cycle: uranium exploration and mining, fuel fabrication, heavy-water production, reprocessing and waste management, The three-stage nuclear power programme aimed at thorium utilisation, Nuclear and radiological safety oversight through the Atomic Energy Regulatory Board, Basic research in physics, accelerators, lasers and fusion through national institutes, Non-power applications: isotopes and radiation for healthcare, agriculture and industry.
- What is the latest on Department of Atomic Energy?
- As of 2026-07-06: Prototype Fast Breeder Reactor attains criticality. The 500 MWe PFBR at Kalpakkam, operated by BHAVINI, achieved first criticality after fuel loading began in October 2025, a milestone for Stage 2 of the three-stage programme.
Official sources
The government's own pages for this institution — go straight to the primary.
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Canonical DAE home; DAE was set up by Presidential Order on 3 August 1954 under the direct charge of the Prime Minister.
dae.gov.in/
- Annual Reports of DAE reports
DAE's own archive of year-wise annual reports.
dae.gov.in/annual-reports-of-dae/
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DAE-hosted year-end review page summarising the department's yearly activity.
dae.gov.in/year-end-review-of-the-department-of-atomic-energ
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Government press-release channel for DAE announcements (English, reg=3&lang=1 pinned).
www.pib.gov.in/PressReleasePage.aspx?PRID=2201302®=3&lang
- Atomic Energy Regulatory Board (AERB) department
India's nuclear/radiation safety regulator, constituted 15 November 1983 under s.27 of the Atomic Energy Act, 1962; HQ Mumbai.
www.aerb.gov.in/english/
- Bhabha Atomic Research Centre (BARC) department
DAE's principal multidisciplinary nuclear R&D centre, Trombay.
www.barc.gov.in/
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DAE public sector undertaking that builds, commissions and operates India's nuclear power plants.
www.npcil.nic.in/
- The Atomic Energy Act, 1962 (India Code) legislation
Act No. 33 of 1962, the statute DAE administers; India Code page carries the bare Act plus rules, regulations, notifications and orders.
www.indiacode.nic.in/handle/123456789/1413?locale=en