India has inaugurated what the Department of Atomic Energy (DAE) describes as the world's first hydrogen production facility based on the Copper–Chlorine (Cu–Cl) thermochemical cycle that uses nuclear process heat from the Fast Breeder Test Reactor (FBTR), instead of electricity. The plant was opened at the Indira Gandhi Centre for Atomic Research (IGCAR) in Kalpakkam and was inaugurated on June 26 by Dr. Ajit Kumar Mohanty, Secretary, DAE and Chairman of the Atomic Energy Commission. Developed as a technology demonstration plant, the facility validates hydrogen production using nuclear energy. The Cu–Cl thermochemical process was developed indigenously by the Bhabha Atomic Research Centre (BARC), Mumbai. The cycle is regarded as a promising method because it operates at relatively lower temperatures and offers higher thermodynamic efficiency than some alternatives, and by using nuclear process heat from fast reactors it avoids the greenhouse-gas emissions linked to conventional hydrogen production. According to DAE, the facility demonstrates how nuclear energy can be used not only for electricity generation but also for producing hydrogen without relying on fossil fuels. The commissioning followed years of research, engineering design, equipment fabrication, installation and testing carried out jointly by BARC and IGCAR, and will help researchers gain operational experience and scale up nuclear-assisted hydrogen production. IGCAR, a key institution in India's fast breeder reactor programme since 1971, designed, built and operated the FBTR, whose experience also contributed to the 500 MWe Prototype Fast Breeder Reactor (PFBR), part of the second stage of India's three-stage nuclear power programme.