India’s Fusion Energy Roadmap

Syllabus: Nuclear Energy

Source:  TH

Context: Researchers at the Institute for Plasma Research (IPR), Gandhinagar, unveiled a roadmap for India’s fusion energy programme.

• It proposes developing SST-Bharat, a superconducting tokamak aiming for a demonstration reactor by 2060.

About India’s Fusion Energy Roadmap:

What is Nuclear Fusion?

• Fusion vs. Fission: Unlike fission (splitting heavy atoms), fusion joins light nuclei (e.g., isotopes of hydrogen) to form heavier atoms, releasing massive energy.
• Advantages:
  • Minimal radioactive waste compared to fission.
  • Abundant fuel (deuterium from water, tritium from lithium).
  • No greenhouse gas emissions.
  • Inherent safety — no meltdown risk.

India’s Fusion Power Plans:

1. Current Research Base:

• SST-1 Tokamak (IPR, Gandhinagar): Research reactor, plasma duration up to 650 ms.
• Participation in ITER (France): India contributes technology and funding to the world’s largest magnetic confinement experiment.

2. Roadmap Highlights:

• SST-Bharat: A fusion-fission hybrid reactor, producing ~130 MW (100 MW fission, 30 MW fusion) at estimated cost ₹25,000 crore.
• Demonstration Reactor (by 2060): 250 MW output, with Q=20 (20x more power output than input).
• Innovations Proposed:
  • Digital twinning for plasma simulation.
  • Machine learning-assisted plasma confinement.
  • Development of radiation-resistant materials.

3. International Benchmarks:

• UK STEP programme: Prototype by 2040.
• US Start-ups: Grid-connected fusion targeted by 2030s.
• China’s EAST tokamak: World record in plasma duration.
• France WEST Tokamak: Maintained plasma for 22 minutes (2025).

Key Features of India’s Fusion Strategy:

• Magnetic confinement using tokamaks: India relies on tokamak reactors, which use powerful magnetic fields to confine plasma at ultra-high temperatures, mimicking stellar conditions for fusion.
• Focus on steady-state superconducting technology: Superconducting magnets enable continuous plasma confinement with minimal energy loss, ensuring stability and efficiency in long-duration operations.
• Fusion-fission hybrid as a bridge to pure fusion: The proposed SST-Bharat will combine fission and fusion, generating partial power from fusion while using fission as a stabilising backup source.
• State-led R&D with limited private-sector involvement: Most funding and projects are led by the Institute for Plasma Research and Department of Atomic Energy, unlike the US and Europe where start-ups drive progress.
• Alignment with Net Zero 2070 energy roadmap: Fusion research is part of India’s long-term clean energy strategy, complementing solar, wind, and fission to reduce dependence on fossil fuels.

Challenges Ahead:

• Technological:
  • Sustaining high-temperature plasma for longer durations.
  • Achieving Q>1 consistently (ITER aims for 10, India targets 20).
  • Developing durable superconducting magnets and radiation-resistant materials.
• Financial:
  • SST-Bharat alone costs ₹25,000 crore.
  • Competes with cheaper renewables (solar, wind).
  • Lack of private investment unlike US/Europe.
• Policy & Governance:
  • No clear legislative or regulatory framework for fusion.
  • India’s energy priorities currently lean on solar, wind, and nuclear fission.
• Global Competition:
  • Western and Chinese projects target earlier timelines (2030s–40s).
  • India’s 2060 target risks technological lag.
• Economic Viability:
  • Fusion electricity affordability remains unproven.
  • Potential cost overruns and long gestation periods.

Way Forward:

• R&D Boost: Increase funding for plasma physics, superconductors, and AI-based simulations.
• Public-Private Partnerships: Encourage Indian start-ups to enter fusion R&D.
• International Cooperation: Deepen engagement with ITER, collaborate with UK STEP, US start-ups, and China’s EAST programme.
• Policy Framework: Create a National Fusion Energy Mission under NITI Aayog/Department of Atomic Energy.
• Skill Development: Train engineers, physicists, and technicians in fusion sciences.
• Strategic Value: Use spin-off technologies (superconducting magnets, radiation-resistant alloys) to upgrade India’s defence, space, and industrial sectors.

Conclusion:

India’s fusion roadmap balances ambition with fiscal caution, aiming for a 2060 prototype. Even if commercial fusion is distant, spin-offs in superconductivity, plasma modelling, and materials science will strengthen technology. This ensures India emerges as a co-creator, not just a consumer, in the future energy revolution.