L&T Energy GreenTech Ltd (LTEG), a subsidiary of infrastructure major Larsen & Toubro (L&T), is set to establish India’s largest green hydrogen production facility at the Indian Oil Corporation Ltd (IOCL) refinery in Panipat, Haryana. The plant, announced on Monday, will be developed under a 25-year build-own-operate (BOO) agreement and will supply 10,000 tonnes of green hydrogen annually.

This landmark initiative is closely aligned with the National Green Hydrogen Mission launched by the Government of India. It aims to decarbonise the industrial sector by replacing conventional hydrogen with a cleaner, renewable-energy-based alternative. The facility at Panipat is expected to become a cornerstone of IOCL’s long-term strategy to reduce carbon emissions in its refining operations.

The plant will be powered entirely by renewable energy and will operate 24/7. It will use high-pressure alkaline electrolysers manufactured domestically by L&T Electrolysers Ltd at its advanced production unit in Hazira, Gujarat, furthering India’s vision of achieving self-reliance in clean energy technology.

Subramanian Sarma, Deputy Managing Director and President of L&T, highlighted the project as a key milestone in India’s clean energy transformation. “This project demonstrates our commitment to advancing the country’s energy transition. It also strengthens our longstanding collaboration with IOCL and underscores L&T’s capability to deliver complex, sustainable infrastructure at scale,” he said.

He added that L&T is proud to take the lead in building India’s green hydrogen ecosystem, paving the way for cleaner industrial processes and reduced dependency on fossil fuels.

Derek Shah, Head of Green Manufacturing & Development at L&T, echoed this sentiment, stating that the initiative showcases the company’s full-spectrum green energy expertise. “This project integrates everything from electrolyser manufacturing to project execution and ongoing operations. It also supports the Aatmanirbhar Bharat mission by using indigenous technologies,” he noted.

The hydrogen produced will serve critical operations at IOCL’s refinery, helping replace grey hydrogen — typically derived from natural gas — with green hydrogen generated via electrolysis using renewable electricity. This shift is expected to have a measurable impact on reducing greenhouse gas emissions, especially from hard-to-abate industrial processes.

In addition to advancing India’s net-zero goals, the project represents a major step toward scaling up green hydrogen production and creating a domestic supply chain. It positions LTEG and L&T as early leaders in a sector that is gaining global momentum.

The Panipat project could also become a model for similar large-scale installations across sectors such as fertilisers, steel, and chemicals, where decarbonisation is both urgent and challenging. As the global push for clean energy intensifies, L&T’s move reinforces India’s ambition to become a green hydrogen hub, backed by local manufacturing, innovation, and long-term partnerships.

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