Green Hydrogen – Powering India's Industrial Future

Introduction

The global energy sector is undergoing a major transformation as countries and industries increasingly focus on reducing carbon emissions and adopting sustainable energy alternatives. With rising energy consumption, growing environmental concerns and the need for energy security, renewable energy technologies are becoming essential for long-term economic development. Among these emerging technologies, green hydrogen is gaining significant attention as a promising solution for building a cleaner and more sustainable energy ecosystem.

Green hydrogen is produced using renewable electricity through a process known as water electrolysis. Unlike conventional hydrogen production methods that depend on fossil fuels, green hydrogen uses electricity generated from renewable sources such as solar and wind energy. This makes it an important option for industries seeking to reduce their carbon footprint and transition towards cleaner production processes.

India has considerable potential to become a major player in the global green hydrogen industry. With increasing investments in renewable energy, technological innovation and domestic manufacturing, the country is developing the infrastructure required to support large-scale hydrogen production and utilisation.

What Is Green Hydrogen and How Is It Produced?

Green hydrogen is hydrogen generated through electrolysis using renewable electricity. During this process, water is separated into hydrogen and oxygen with the help of an electrolyser.

An electrolyser is a specialised system that uses electrical energy to drive the electrochemical reaction. When powered by renewable electricity, the hydrogen produced can have substantially lower lifecycle greenhouse gas emissions than hydrogen generated using conventional fossil-fuel-based processes.

The basic green hydrogen production process involves three important stages:

1. Renewable electricity generation: Solar or wind power provides the electricity required for hydrogen production.

2. Water electrolysis: An electrolyser separates water molecules into hydrogen and oxygen.

3. Hydrogen storage and utilisation: The hydrogen is conditioned, stored and supplied for industrial applications, transportation or other energy requirements.

The efficiency and overall sustainability of green hydrogen production depend on factors such as electricity source, electrolyser performance, water availability, system configuration and operating conditions.

Importance of Green Hydrogen in India's Energy Transition

India's expanding industrial and infrastructure sectors require reliable and sustainable energy solutions. While solar and wind energy are helping increase renewable electricity generation, certain industrial processes require energy carriers and feedstocks that are difficult to replace through direct electrification alone.

Green hydrogen can help address some of these challenges.

Industries such as steel manufacturing, refining, fertilisers and chemicals can explore hydrogen-based processes to reduce their dependence on conventional fossil fuels. Green hydrogen can also support the development of energy storage solutions and integrated renewable energy systems.

The Government of India has introduced the National Green Hydrogen Mission to establish the country as a global hub for the production, utilisation and export of green hydrogen and its derivatives.

The development of domestic electrolyser manufacturing, hydrogen infrastructure, research and development, and skilled manpower will be important for achieving this ambition.

Major Types of Electrolyser Technologies

Electrolysers are at the centre of green hydrogen production. Different technologies are available, each with its own operating characteristics, advantages and applications.

1. Alkaline Water Electrolysers

Alkaline water electrolysis is one of the established technologies used for hydrogen production. It uses an alkaline electrolyte to facilitate the movement of ions between electrodes during the electrochemical process.

Alkaline electrolysers are recognised for their established industrial operating history, scalable configurations and potential for large-scale hydrogen production.

They are particularly relevant for industrial projects that require hydrogen generation at significant capacities.

2. Proton Exchange Membrane (PEM) Electrolysers

PEM electrolysers use a solid polymer electrolyte membrane to conduct protons during the electrolysis process.

These systems offer advantages such as compact designs, high current density and operational flexibility. They can be suitable for applications involving variable renewable electricity generation.

3. Solid Oxide Electrolysers

Solid oxide electrolysis operates at high temperatures and uses a ceramic electrolyte. It can achieve high electrical efficiency when suitable heat integration is available.

Although this technology offers promising opportunities, material durability, thermal management and commercialisation remain important considerations.

Selecting the appropriate electrolyser technology depends on project capacity, power availability, operating requirements, investment considerations and the intended hydrogen application.

Key Industrial Applications of Green Hydrogen

Green hydrogen has the potential to support decarbonisation across multiple industrial sectors.

Steel Manufacturing

Traditional steelmaking processes rely heavily on coal and other fossil fuels. Hydrogen-based direct reduced iron processes offer an alternative pathway for producing lower-emission steel, particularly when combined with renewable electricity.

Fertiliser and Chemical Industries

Hydrogen is an essential feedstock in ammonia production and several chemical manufacturing processes. Replacing conventionally produced hydrogen with green hydrogen can help reduce the emissions associated with these industries.

Oil Refining

Hydrogen is widely used in petroleum refining for processes such as hydrocracking and desulphurisation. Green hydrogen can provide an alternative source for certain refinery hydrogen requirements.

Transportation and Mobility

Hydrogen fuel cells can convert hydrogen into electricity to power vehicles. Potential applications include heavy-duty transportation, buses and other mobility segments where fuel cell systems may offer operational advantages.

Energy Storage

Green hydrogen can also serve as an energy storage medium. Surplus renewable electricity can be used to produce hydrogen, which can be stored and converted back into electricity when required through fuel cells or other suitable technologies.

Role of Green Hydrogen Microgrids in Sustainable Energy

Green hydrogen microgrids combine renewable electricity generation, electrolysers, hydrogen storage and fuel cell technology to create an integrated energy system.

In a typical configuration, solar or wind power supplies electricity to an electrolyser. The electrolyser produces hydrogen, which is subsequently stored for future use. When electricity generation from renewable sources is insufficient or additional power is required, hydrogen can be supplied to a fuel cell to generate electricity.

This integrated approach can support energy management, renewable power utilisation and electricity supply in suitable applications.

Green hydrogen microgrids also demonstrate how different clean energy technologies can work together rather than operating as isolated systems.

Advait Greenergy: Supporting Green Hydrogen Development in India

The growth of India's green hydrogen industry requires companies with capabilities across technology, manufacturing, engineering and project execution.

Advait Greenergy Private Limited is contributing to this developing ecosystem through its focus on green hydrogen technology, alkaline electrolyser manufacturing and hydrogen infrastructure development.

The company is working towards strengthening domestic manufacturing capabilities and supporting the adoption of hydrogen technologies through engineering, procurement, construction and project management services.

Its green hydrogen activities include the development of electrolyser-based solutions and integrated hydrogen infrastructure.

One of the notable initiatives associated with Advait Greenergy is the green hydrogen microgrid project at THDC India Limited in Rishikesh. The project integrates renewable energy, electrolyser technology, hydrogen storage and PEM fuel cell systems to demonstrate an integrated clean energy application.

Such projects are important for demonstrating how renewable electricity and hydrogen technologies can be combined to support sustainable energy infrastructure.

For more information about the company's capabilities, explore Advait Greenergy's Green Hydrogen Solutions.

Importance of Domestic Electrolyser Manufacturing in India

India's green hydrogen ambitions depend not only on renewable electricity availability but also on the development of a strong domestic manufacturing ecosystem.

Electrolysers are critical components of hydrogen production infrastructure. Developing domestic manufacturing capabilities can help strengthen the supply chain, improve access to technology, support industrial development and create opportunities for engineering and manufacturing employment.

Local production can also contribute to technology development, component localisation, quality improvement and long-term industry competitiveness.

Indian manufacturers and technology developers have an opportunity to participate in the growing domestic and international hydrogen markets by focusing on product reliability, performance, cost optimisation and technical innovation.

Advait Greenergy's focus on alkaline electrolyser manufacturing aligns with the broader objective of strengthening India's clean energy manufacturing ecosystem.

Challenges and Opportunities in Green Hydrogen Adoption

Despite its potential, green hydrogen adoption involves several challenges that need to be addressed for large-scale commercial deployment.

Production cost: Renewable electricity prices, electrolyser capital costs and operating efficiency influence the overall cost of green hydrogen.

Infrastructure development: Dedicated hydrogen storage, transportation and distribution infrastructure is necessary to support large-scale utilisation.

Water availability: Electrolysis requires water, making responsible water sourcing and treatment important project considerations.

Technology development: Continuous improvements in electrolyser efficiency, durability and manufacturing processes are required to enhance project economics.

Industrial adoption: Industries need suitable infrastructure, investment planning and technical expertise to integrate hydrogen into existing operations.

Addressing these challenges through research, policy support, infrastructure investment and industry collaboration can help accelerate the adoption of green hydrogen.

Future of Green Hydrogen in India

The future of green hydrogen in India is closely connected to the country's renewable energy expansion, industrial growth and clean energy manufacturing ambitions.

As electrolyser technologies continue to develop and renewable electricity becomes increasingly accessible, opportunities for hydrogen production and utilisation are expected to expand.

The development of green hydrogen hubs, industrial clusters, storage infrastructure and domestic manufacturing facilities can support the growth of this emerging sector.

Technology innovation and partnerships between manufacturers, engineering companies, research institutions and industrial users will also be important in building a competitive hydrogen ecosystem.

Companies such as Advait Greenergy, with a focus on electrolyser manufacturing and integrated hydrogen solutions, are positioned to participate in this evolving industry.

Conclusion

Green hydrogen represents an important opportunity for transforming India's energy and industrial landscape. From steel manufacturing and chemicals to transportation and energy storage, hydrogen technology offers potential pathways for reducing emissions in sectors that face challenges with conventional electrification.

The successful development of this industry will require investment in renewable energy, electrolyser manufacturing, infrastructure, research and project execution.

With its focus on green hydrogen, alkaline electrolyser manufacturing and integrated clean energy solutions, Advait Greenergy is contributing to the development of India's hydrogen ecosystem.

As the country moves towards a more sustainable energy future, green hydrogen is expected to remain an important technology in supporting industrial decarbonisation and long-term energy transformation.