L&T Energy GreenTech Ltd (LTEG), a wholly-owned subsidiary of Larsen & Toubro (L&T), will set up India’s largest green hydrogen plant at Indian Oil Corporation Ltd’s (IOCL) Panipat Refinery in Haryana.

The plant, to be developed on a build-own-operate (BOO) basis, will supply 10,000 tonnes of green hydrogen annually to IOCL for 25 years, supporting Government of India’s National Green Hydrogen Mission.

The plant will operate round the clock using renewable energy, aligning with IOCL’s broader strategy to decarbonise its refining operations and contribute to India’s net-zero ambitions. It will produce the green hydrogen using high-pressure alkaline electrolysers manufactured at L&T Electrolysers Ltd’s state-of-the-art facility in Hazira, Gujarat.

The initiative marks a significant milestone in India’s energy transition and reinforces L&T’s leadership in delivering sustainable, scalable clean energy infrastructure. With this development, LTEG becomes a pioneer in India’s green hydrogen ecosystem, setting a precedent for industrial-scale adoption across refineries, fertiliser plants, and other hard-to-abate sectors.