4 Times Larger Than Tesla's Giga Factory, Can House 100 Eiffel Towers: Mukesh Ambani's Reliance Giga Energy Complex in Jamnagar
In a bold move to position India as a global leader in renewable energy, Mukesh Ambani, Chairman of Reliance Industries Limited (RIL), is spearheading the development of the Dhirubhai Ambani Green Energy Giga Complex in Jamnagar, Gujarat. Announced as the world’s largest and most integrated new energy ecosystem, this ambitious project is four times larger than Elon Musk’s Tesla Giga Factory and boasts a scale equivalent to housing 100 Eiffel Towers in steel usage. Unveiled during RIL’s 48th Annual General Meeting (AGM) in August 2025, the complex is set to redefine clean energy production. This blog explores the scale, significance, and transformative potential of this megaproject, along with its contributions to India’s green energy ambitions.
The Scale of the Giga Energy Complex
The Dhirubhai Ambani Green Energy Giga Complex is a monumental undertaking, sprawling across 5,000 acres in Jamnagar. Its sheer size and engineering feats are staggering:
- Building Area: The complex covers 44 million square feet, making it four times larger than Tesla’s Giga Factory in terms of building area.
- Construction Materials: It has utilized 3.4 million cubic meters of concrete and 7 lakh tonnes of steel—equivalent to the steel used in 100 Eiffel Towers.
- Cabling: The project includes 1 lakh kilometers of cable, enough to stretch to the moon and back.
- Workforce: Over 50,000 workers have been employed at peak, supported by advanced construction automation, with 5 million manhours of engineering logged.
Anant Ambani, Executive Director of Reliance New Energy, emphasized during the 2025 AGM that the complex is unmatched globally in size, scale, and integration, describing it as the “cradle of both the world’s largest conventional energy complex and the world’s largest new energy complex.”
Components of the Giga Energy Complex
The Jamnagar complex is designed to be a comprehensive ecosystem for clean energy, integrating five giga factories under one roof. These factories focus on:
- Solar Photovoltaic (PV) Modules: The solar PV factory, already operational, has produced its first 200 MW of Heterojunction Technology (HJT) solar modules, which offer 10% higher energy yield, 20% better temperature performance, and 25% lower degradation. The facility aims to scale up to 20 GWp, making it the world’s largest single-site solar manufacturing complex.
- Advanced Energy Storage Batteries: Set to begin operations in 2026, the battery giga factory will start with a 40 GWh annual capacity, expanding modularly to 100 GWh. It will produce Lithium Iron Phosphate (LFP) and explore sodium-ion battery technologies.
- Electrolyser Manufacturing: By the end of 2026, the electrolyser giga factory will scale to 3 GW annually, enabling cost-competitive green hydrogen production through technologies like Alkaline, PEM, and AEM.
- Fuel Cells: The fuel cell factory will support applications in automobiles, data centers, telecom towers, and industrial equipment, contributing to decarbonization efforts.
- Power Electronics: This facility will manufacture electronics for telecommunications, cloud computing, and IoT platforms, ensuring reliable power delivery for renewable energy systems.
These factories will produce products for round-the-clock renewable power and green chemicals, such as green ammonia, e-methanol, and sustainable aviation fuel, positioning Reliance as a global leader in clean energy solutions.
Complementary Solar Project in Kutch
In addition to the Jamnagar complex, Reliance is developing one of the world’s largest single-site solar projects in Kutch, Gujarat, spanning 5,50,000 acres—three times the size of Singapore. This project is expected to meet nearly 10% of India’s electricity demand within a decade, deploying 55 MW of solar modules and 150 MWh of battery containers daily at peak. The Kutch project, combined with Jamnagar’s infrastructure, will create a seamless clean energy ecosystem, from solar power generation to hydrogen production and storage.
Strategic Vision and Investments
Reliance’s clean energy push is backed by significant investments and strategic partnerships:
- Investment: RIL has committed ₹75,000 crore (approximately USD 8.8 billion) to the new energy business, with plans to double this investment to scale up the ecosystem.
- Global Partnerships: Reliance has collaborated with leading engineering and construction firms to ensure best-in-class quality and cost efficiency. It also acquired Norway’s REC Solar Holdings in 2021 to bolster its solar manufacturing capabilities.
- Green Hydrogen Goals: The complex aims to produce 3 million tonnes per annum (MMTPA) of green hydrogen equivalent by 2032, initially meeting Reliance’s captive needs before scaling for global export.
- Bioenergy Initiatives: Reliance is building compressed biogas (CBG) plants with a target capacity of 0.5 million tonnes annually, scaling to over 500 plants by 2030. The world’s largest Bioenergy Technology and R&D Centre in Jamnagar supports this effort.
Mukesh Ambani has set an ambitious target to reduce green hydrogen costs to $1 per kilogram within a decade, aligning with RIL’s goal of achieving net carbon zero status by 2035.
Impact on India’s Energy Landscape
The Dhirubhai Ambani Green Energy Giga Complex is poised to transform India’s energy sector:
- Energy Independence: By producing solar modules, batteries, and green hydrogen, the complex will reduce India’s reliance on fossil fuels and imported energy technologies.
- Economic Growth: The project will create jobs, stimulate local economies, and position India as a global hub for cost-competitive green hydrogen and its derivatives.
- Climate Goals: The initiative supports India’s commitment to renewable energy and net-zero emissions, addressing the urgent need for sustainable development in one of the world’s fastest-growing economies.
- Technological Leadership: The AI-driven, smart giga factories will keep Reliance ahead in technology, cost-efficiency, and reliability, setting global benchmarks.
Anant Ambani described the complex as a symbol of “New Reliance and New India,” highlighting its role in making Jamnagar the face of India’s clean energy revolution.
Challenges and Considerations
While the project is groundbreaking, it faces challenges:
- Scale and Execution: Managing a project of this magnitude requires precise coordination and risk management to meet aggressive timelines.
- Global Competition: Competing with established clean energy markets like China and the U.S. will demand continuous innovation and cost optimization.
- Environmental Impact: Large-scale construction and land use in Jamnagar and Kutch must balance ecological preservation with industrial development.
Reliance’s partnerships and in-house capabilities, however, position it well to overcome these hurdles, leveraging its experience from operating the world’s largest refining complex in Jamnagar.
Conclusion
The Dhirubhai Ambani Green Energy Giga Complex in Jamnagar is a testament to Mukesh Ambani’s vision of transforming Reliance Industries into a global clean energy powerhouse. With a scale four times larger than Tesla’s Giga Factory and steel usage equivalent to 100 Eiffel Towers, this megaproject is redefining the boundaries of renewable energy production. By integrating solar, battery, hydrogen, and bioenergy solutions, Reliance is not only driving India’s green energy ambitions but also setting a global standard for sustainable innovation. As the complex nears completion, with key facilities set to launch in 2026, it promises to be a game-changer for India’s economy, environment, and energy security.
