India opens world's first nuclear hydrogen plant at Kalpakkam, a milestone for low-carbon hydrogen

India has started operating the world's first nuclear-powered hydrogen production facility at the Indira Gandhi Centre for Atomic Research in Kalpakkam. The plant uses heat and electricity from a nuclear reactor to split water into hydrogen via electrolysis, producing hydrogen without direct carbon emissions. This is a concrete step toward low-carbon hydrogen that does not rely on solar or wind intermittency. The facility is small scale but serves as a proof of concept for coupling nuclear baseload power with hydrogen production. If scaled, this approach could supply clean hydrogen for fertilizer, refining, and steelmaking without the land use or curtailment issues that sometimes limit renewable hydrogen. The project is part of India's broader push to diversify its clean energy portfolio beyond solar and wind. For carbon markets and climate policy, this matters because it demonstrates a dispatchable, low-carbon hydrogen pathway. It also raises questions about cost competitiveness versus electrolysis powered by cheap renewables, and about the regulatory framework needed for nuclear hydrogen to qualify for green hydrogen subsidies or carbon credits.