PYQs
10
Articles
1
Momentum
25
Crucial for India's long-term energy security, strategic autonomy, optimal resource utilization (thorium reserves), and a unique approach to nuclear power development.
India's Three-Stage Nuclear Power Programme is a long-term strategy conceived by Dr. Homi J. Bhabha to achieve energy security and sovereignty by optimally utilizing the country's limited uranium resources and vast thorium reserves. It aims to establish a sustainable nuclear fuel cycle.
Stage 1 (Pressurised Heavy Water Reactors - PHWRs)
Uses natural uranium as fuel, producing plutonium from spent fuel. Current fleet of 10 indigenous PHWRs under implementation.
Stage 2 (Fast Breeder Reactors - FBRs)
Uses plutonium-239 as fuel and uranium-238 as a blanket to breed more plutonium-239, generating more fuel than consumed. The Prototype Fast Breeder Reactor (PFBR) is a key example.
Stage 3 (Thorium-based Reactors)
Aims for large-scale utilization of thorium-232, converting it into fissile uranium-233 in breeder reactors, initially using plutonium as driver fuel.
Objective
To achieve long-term energy security and self-reliance by exploiting India's abundant thorium reserves.
Stage 1
Pressurised Heavy Water Reactors (PHWRs) using natural uranium, producing plutonium.
Stage 2
Fast Breeder Reactors (FBRs) using plutonium-239 as fuel and breeding more plutonium from uranium-238, while also converting thorium-232 to uranium-233 in the blanket.
Stage 3
Advanced Heavy Water Reactors (AHWRs) or other breeder reactors using uranium-233 bred from thorium, with plutonium as a driver fuel.
Goal
Long-term energy sovereignty and self-reliance in nuclear fuel.
India's Three-Stage Nuclear Power Programme
| Stage | Reactor Type | Fuel | Output/Objective |
|---|---|---|---|
| Stage 1 | Pressurised Heavy Water Reactors (PHWRs) | Natural Uranium | Produces Plutonium |
| Stage 2 | Fast Breeder Reactors (FBRs) | Plutonium-239 (U-238 blanket) | Breeds more Plutonium-239 |
| Stage 3 | Thorium-based Reactors | Uranium-233 (from Thorium-232) | Large-scale Thorium utilization |
Stages of India's Nuclear Power Programme
| Stage | Reactor Type | Fuel Used | Output/Goal |
|---|---|---|---|
| First Stage | Pressurised Heavy Water Reactors (PHWRs) | Natural Uranium | Plutonium-239 |
| Second Stage | Fast Breeder Reactors (FBRs) | Uranium-Plutonium Mixed Oxide (MOX) | Breeds Plutonium-239, converts Thorium-232 to Uranium-233 |
| Third Stage | Thorium-based Reactors (e.g., AHWRs) | Uranium-233 (from Thorium-232) | Large-scale sustainable energy |
Static syllabus anchors
| Type | Reference |
|---|---|
| Conceptual area | Science & Technology |
| Conceptual area | Energy Security |
| Conceptual area | Indian Economy |
Institutions & roles
| Body | Role |
|---|---|
| Bhabha Atomic Research Centre (BARC) | Research and development |
| Department of Atomic Energy (DAE) | Oversees, formulates policy, implements |
| Indira Gandhi Centre for Atomic Research (IGCAR) | Designs, develops, tests (pfbr) |
| Bharatiya Nabhikiya Vidyut Nigam Limited (BHAVINI) | Implements (pfbr) |
| Nuclear Power Corporation of India Limited (NPCIL) | Implements (phwrs) |
| Atomic Minerals Directorate for Exploration and Research (AMD) | Explores uranium/thorium resources |
Prelims angle: Multi-statement analysis
Prelims angle: Conceptual understanding
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Consider the following types of vehicles: I. Full battery electric vehicles II. Hydrogen fuel cell vehicles III. Fuel cell electric hybrid vehicles How man...
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Consider the following statements: Statement I: Of the two major ethanol producers in the world, i.e., Brazil and the United States of America, the former p...
Consider the following types of vehicles: I. Full battery electric vehicles II. Hydrogen fuel cell vehicles III. Fuel cell electric hybrid vehicles How man...
With reference to green hydrogen, Consider the following statements : 1. It can be used directly as a fuel for internal combustion. 2. It can be blended w...
Consider the following statements: Statement-I: India, despite having uranium deposits, depends on coal for most of its electricity production. Statement-II...
With reference to green hydrogen, Consider the following statements : 1. It can be used directly as a fuel for internal combustion. 2. It can be blended w...
Consider the following statements: Statement-I: India, despite having uranium deposits, depends on coal for most of its electricity production. Statement-II...
With reference to green hydrogen, Consider the following statements : 1. It can be used directly as a fuel for internal combustion. 2. It can be blended w...
Open questionConsider the following statements: Statement-I: India, despite having uranium deposits, depends on coal for most of its electricity production. Statement-II...
Open questionWith reference to green hydrogen, Consider the following statements : 1. It can be used directly as a fuel for internal combustion. 2. It can be blended w...
Open questionConsider the following statements: Statement-I: India, despite having uranium deposits, depends on coal for most of its electricity production. Statement-II...
Open questionConsider the following statements about 'PM Surya Ghar Muft Bijli Yojana': I. It targets installation of one crore solar rooftop panels in the residential s...
Open questionConsider the following statements: Statement I: Of the two major ethanol producers in the world, i.e., Brazil and the United States of America, the former p...
Open questionConsider the following types of vehicles: I. Full battery electric vehicles II. Hydrogen fuel cell vehicles III. Fuel cell electric hybrid vehicles How man...
Open questionConsider the following statements about 'PM Surya Ghar Muft Bijli Yojana': I. It targets installation of one crore solar rooftop panels in the residential s...
Open questionConsider the following statements: Statement I: Of the two major ethanol producers in the world, i.e., Brazil and the United States of America, the former p...
Open questionConsider the following types of vehicles: I. Full battery electric vehicles II. Hydrogen fuel cell vehicles III. Fuel cell electric hybrid vehicles How man...
Open questionConsider the following statements about 'PM Surya Ghar Muft Bijli Yojana': I. It targets installation of one crore solar rooftop panels in the residential s...
Open questionConsider the following statements: Statement I: Of the two major ethanol producers in the world, i.e., Brazil and the United States of America, the former p...
Open questionConsider the following types of vehicles: I. Full battery electric vehicles II. Hydrogen fuel cell vehicles III. Fuel cell electric hybrid vehicles How man...
Open questionPARLIAMENT QUESTION: PROTOTYPE FAST BREEDER REACTOR
05 Aug 2026 · India's three-stage nuclear program aims for energy independence by leveraging domestic uranium and vast thorium reserves through PHWRs, FBRs, and eventually thorium-based reactors.
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India's Three-Stage Nuclear Power Programme
UPSC has asked 10 linked questions on India's Three-Stage Nuclear Power Programme in Mains. Write an answer to one — and get it evaluated.
Practice official previous year questions asked by UPSC related to this concept.
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