L&T Energy GreenTech Ltd (LTEG), a wholly-owned subsidiary of Larsen & Toubro (L&T), will set up India’s largest green hydrogen (H₂) plant at Indian Oil Corp. Ltd’s (IOCL) Panipat Refinery in Haryana.

The plant, to be developed on a build-own-operate (BOO) basis, will supply 10,000 tpy of green H₂ to IOCL for 25 yr, supporting the Government of India’s National Green Hydrogen Mission.

The plant will operate around the clock using renewable energy, aligning with IOCL’s broader strategy to decarbonize its refining operations and contribute to India’s net-zero ambitions. It will produce the green H₂ using high-pressure alkaline electrolyzers 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 H₂ ecosystem, setting a precedent for industrial-scale adoption across refineries, fertilizer plants, and other hard-to-abate sectors.

Commenting on this, Subramanian Sarma, Deputy Managing Director & President, L&T, said: “The decision to set up India’s maiden green hydrogen plant validates our strategy to lead the nation’s energy transition. This long-term project not only deepens our partnership with IOCL but also reinforces our capability to deliver large-scale clean energy solutions. As a first mover in India’s green hydrogen space, we are proud to lay the foundation for cleaner industrial processes at scale.”

Complementing him, Derek Shah, Head – Green Manufacturing & Development, L&T, added: “This project reflects our end-to-end green energy capabilities — from electrolyzer manufacturing to execution and operation. With cutting-edge technology and a skilled team, we are confident of delivering a high-performance, zero-emissions plant that sets new industry benchmarks. The initiative also supports India’s Aatmanirbhar Bharat mission by deploying indigenously manufactured electrolyzers — central to self-reliant clean-tech solutions and long-term decarbonization goals.”