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The Panipat green hydrogen plant is a 10,000 tonne per year facility at Indian Oil Corporation’s Panipat refinery in Haryana, being built by L&T Energy GreenTech under a 25 year build own operate contract. The purchase agreement and land lease were executed by September 2025, and design and engineering work is now underway, with completion still targeted for December 2027 according to IOCL’s R&D director.

Panipat Green Hydrogen Plant Fits A Broader Pattern Of Long Horizon Clean Energy Bets

At Rs 397 per kg, the confirmed levelized cost sits above grey hydrogen’s Rs 180 to 200 per kg, a gap IOCL expects to narrow as capacity scales. Haryana is now drafting a state Green Hydrogen Policy after reviewing the project, echoing how Odisha’s incentives just secured Saatvik’s 3.6 GW solar cell expansion, another long horizon domestic clean energy bet.

Project Overview

• Project Name: Panipat Green Hydrogen Plant
• Location: Indian Oil Corporation’s Panipat Refinery and Petrochemical Complex, Haryana, India
• Project Value: Not publicly disclosed; built under a build own operate model with no upfront capital cost to IOCL
• Client/Owner: Indian Oil Corporation Ltd (IOCL)
• Main Contractor: L&T Energy GreenTech Ltd (LTEG)
• Key Components: 10,000 tonnes per year of green hydrogen from high pressure alkaline electrolysers, meeting about 10 percent of the refinery’s hydrogen demand initially
• Procurement Model: Build own operate, 25 year offtake agreement at Rs 397 per kg including GST
• Construction Start: Land lease executed September 2025; design and engineering activities in progress
• Expected Completion: December 2027
• Strategic Impact: Supports India’s National Green Hydrogen Mission and IOCL’s phased substitution of grey hydrogen across its refineries

Project Team

• Client/Owner: Indian Oil Corporation Ltd
• Main Contractor: L&T Energy GreenTech Ltd, a subsidiary of Larsen & Toubro
• Electrolyser Supplier: L&T Electrolysers Ltd, Hazira, Gujarat
• National Policy Body: Ministry of Petroleum and Natural Gas, Government of India, under the National Green Hydrogen Mission
• State Government: Government of Haryana

Reported 21st July 2025: Larsen & Toubro’s subsidiary L&T Energy GreenTech Ltd (LTEG) plans to construct India’s largest green hydrogen plant at Indian Oil Company’s Panipat refinery in Haryana.

Project factsheet

Location: IOCL’s Panipat Refinery & Petrochemical Complex, Haryana, India

Developer: L&T GreenTech Ltd (LTEG)

Project offtaker: Indian Oil Corporation Ltd (IOCL)

Project model: Build-Own-Operate (BOO)

Production capacity: 10,000 tons of green hydrogen annually

Technology used: High-pressure alkaline electrolysers

Contractor: LTEG

Contract term: 25 years

End of construction date: Within 30 months i.e. by December 2027

Also read: NTPC Green Energy to develop 20 MW renewable energy project and more in India

More on India’s Largest Green Hydrogen Plant by L&T

L&T’s largest green hydrogen plant in India will be developed on a Build-Own-Operate (BOO) basis. Once operational, the plant will supply 10,000 tons of green hydrogen annually. The plan also covers a 25-year operation contract, and furthermore supports the Government of India’s National Green Hydrogen Mission.

The government announced the plant construction tender in April 2024. This was followed by bids, with L&T wining the bid for ₹397 per kg (USD 4.65–4.75/kg). This was competed against NTPC Renewable Energy at ₹398/kg and ReNew at ₹407/kg. L&T offered the lowest bid and secured 100% of the capacity.

Also included in the green hydrogen plant’s design is a renewable energy source. High-pressure alkaline electrolysers by the L&T based Gujarat facility will also be used at the green hydrogen plant. This ensures India’s net-zero ambitions are looked up to, a move that aligns with IOCL’s broader decarbonization strategy.

Mr. Sarma, L&T’s Managing Director and President, also termed the project as the “foundation for cleaner industrial processes at scale”. A project, he says, will lead India’s green energy transition.

Why India’s Largest Green Hydrogen Plant Project Matters

1. It is among the first large-scale industrial green hydrogen plants in India.
2. A wining bid price of ₹397 per kg (USD 65–4.75/kg) offers a competitive price point. This also invariably attract investors.
3. L&T’s full-stack integration demonstrates the company’s infrastructural abilities. The company will handle the electrolyser manufacturing to Engineering, Procurement, and Construction (EPC), and operation.
4. The Panipat green hydrogen project marks L&T’s entry into industrial-scale green hydrogen production. This further boosts the company’s credentials in low-carbon infrastructure.
5. Plans for construction of India’s largest green hydrogen plant also reinforces the country’s decarbonization efforts and the broader hydrogen adoption across industries.

Also read: Waaree Energies Inaugurates 5.4GW Gujarat Solar Cell Facility, the Largest in India

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