India has inaugurated the world's first Hydrogen Production Facility based on the Copper–Chlorine (Cu–Cl) Thermochemical Cycle, harnessing nuclear process heat from the Fast Breeder Test Reactor (FBTR) at the Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam. The facility, developed under the Department of Atomic Energy (DAE), marks a landmark moment in India's clean energy and advanced nuclear technology programme.

What the Facility Does

The installation serves as a technology demonstrator, validating the production of hydrogen through the Cu–Cl thermochemical process developed indigenously by the Bhabha Atomic Research Centre (BARC), Mumbai. By using nuclear process heat rather than fossil fuels or grid electricity, the cycle produces hydrogen with a near-zero carbon footprint. Officials describe the successful integration of nuclear heat with hydrogen generation as a 'pioneering technological breakthrough.'

Nuclear power's dual capacity — delivering reliable, carbon-free electricity alongside high-temperature process heat — makes it uniquely suited to large-scale hydrogen production, according to the government. This positions the technology as a potential cornerstone of India's decarbonisation strategy and long-term energy security framework.

What the Government Said

Dr Ajit Kumar Mohanty, Secretary of the Department of Atomic Energy (DAE) and Chairman of the Atomic Energy Commission (AEC), underscored the strategic significance of the development. 'I congratulate the scientists, engineers and technical teams of BARC and IGCAR whose sustained dedication, innovation and technical excellence have transformed an advanced scientific concept into an operational reality. This achievement is a testament to India's growing capabilities in advanced nuclear technologies and clean energy systems,' he said.

Sreekumar G. Pillai, Director of IGCAR, noted that the breakthrough builds on more than four decades of operational experience through the Fast Breeder Test Reactor programme. 'The successful demonstration of hydrogen production using nuclear process heat showcases the versatility of advanced nuclear systems and underscores IGCAR's commitment to developing innovative technologies that contribute to India's clean energy transition and long-term energy security,' he said.

Why This Matters for India

India has committed to ambitious clean energy targets, and green hydrogen is widely seen as critical to decarbonising hard-to-abate sectors such as steel, fertilisers, and heavy transport. Until now, most hydrogen production globally has relied on natural gas reforming — a carbon-intensive process. Nuclear-driven thermochemical cycles offer a scalable, emissions-free alternative that does not depend on intermittent renewable generation.

Notably, the Cu–Cl process was developed entirely in-house by BARC, signalling a meaningful advance in India's indigenous nuclear technology capabilities. This comes amid growing global interest in nuclear energy as a clean baseload option, with several countries revisiting reactor programmes shelved after Fukushima in 2011.

The Road Ahead

The Kalpakkam facility is currently a demonstrator, and scaling the technology to commercial hydrogen output will require further engineering and investment. The DAE's integration of the Cu–Cl cycle with the FBTR opens a pathway for larger advanced reactors — including India's planned 500 MW Prototype Fast Breeder Reactor (PFBR) — to eventually anchor industrial-scale hydrogen hubs. How quickly that transition occurs will depend on policy support, capital allocation, and the pace of India's broader nuclear expansion.