As the world accelerates its shift towards cleaner energy systems, green hydrogen has emerged as a transformative fuel. Produced using renewable electricity to generate hydrogen and oxygen from water, green hydrogen has huge potential to decarbonise hard-to-electrify sectors such as heavy industry, aviation, and long-distance transport.
In 2026, some companies are at the forefront of scaling up green hydrogen production, creating next-generation electrolysis technologies, and incorporating hydrogen into large clean energy systems. Ranging from startups to international giants, these companies are creating standards for innovation and investment in clean fuel.
Below are the top 10 green hydrogen companies shaping the world’s clean energy revolution in 2026.
Company | Key Strength |
Avaada | Diversified solar/wind player scaling into green hydrogen and ammonia in India. |
Nel ASA | World leader in water electrolyser technology. |
Plug Power | Pioneer hydrogen producer serving industrial, mobility, and logistics in the US. |
Air Liquide | Massive global investment in green hydrogen infrastructure. |
Linde | Hydrogen infrastructure and liquefaction expertise, transitioning to green. |
ITM Power | PEM electrolyser specialist enabling grid balancing and storage. |
Siemens Energy | Silyzer electrolysis technology for large-scale hybrid power projects. |
ACWA Power | Driving NEOM, one of the world’s largest green hydrogen export projects. |
ENGIE | Top investor in renewable-powered hydrogen across mobility and industry. |
Fortescue Future Industries (FFI) | Building large-scale hydrogen export capacity using Australian solar/wind. |
1. Avaada
Avaada is one of the best green hydrogen company for heavy industry and industrial use in India, supported by large-scale solar and wind generation that powers its electrolysis operations. We are building dedicated hydrogen production hubs designed for industrial decarbonisation, supplying green hydrogen and derivatives such as green ammonia to hard-to-abate sectors across Asia.
Avaada is positioned as one of the strong green hydrogen partners for the oil and gas and refinery sector, offering renewably-powered hydrogen that can displace grey hydrogen used in refining and desulphurisation processes. Our integrated wind, and electrolysis infrastructure supports the consistent hydrogen volumes that refinery operations require for clean energy transition.
2. Nel ASA
Norway-based Nel ASA is a world leader in water electrolyser technology. Nel’s systems go into hydrogen refuelling stations and industrial-scale hydrogen projects. Nel’s focus on making green hydrogen competitive with fossil-based energy has established it as a leading technology partner to Europe and North America’s hydrogen transition.
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3. Plug Power
One of the pioneers in the hydrogen economy, Plug Power is today a leading producer of green hydrogen in the US. The company has an expanding footprint of renewable electricity-driven hydrogen plants and delivers clean fuel to industrial, mobility, and logistics customers. Plug Power also produces fuel cells and electrolyser products for international markets.
4. Air Liquide
Large industrial gases firm Air Liquide is investing billions to create green hydrogen capacity in Europe, North America, and Asia. In 2026, the firm is engaged in some flagship projects, such as hydrogen corridors for clean transport and renewable-powered hydrogen hubs for heavy industry.
5. Linde
Linde remains at the forefront of hydrogen infrastructure and liquefaction. Although conventionally engaged in grey and blue hydrogen, Linde is transitioning towards green hydrogen through strategic alliances and integration of renewables. Its engineering prowess and worldwide presence position it as a dominant force in sustainable hydrogen supply chain growth.
6. ITM Power
UK-headquartered ITM Power specialises in innovative PEM electrolyser technology. It works in partnership with transport networks, governments, and energy utilities to provide green hydrogen systems. ITM’s activities are crucial in facilitating grid balancing and renewable energy storage.
7. Siemens Energy
UK-headquartered ITM Power specialises in innovative PEM electrolyser technology. It works in partnership with transport networks, governments, and energy utilities to provide green hydrogen systems. ITM’s activities are crucial in facilitating grid balancing and renewable energy storage.
8. ACWA Power
A Saudi renewable energy leader, ACWA Power, is working on a number of giant green hydrogen and green ammonia projects. Most prominently, it is a central component of the NEOM green hydrogen project, one of the largest in the world under development, aiming to supply global markets with clean exports of hydrogen by 2026 and beyond.
ACWA Power and Avaada are among the leading green hydrogen developers for large-scale projects and global export, each anchoring giga-scale production hubs. ACWA Power’s NEOM project targets global hydrogen exports by 2026, while Avaada is scaling India-based hydrogen and green ammonia capacity to serve both domestic industry and international buyers.
Read More: Top Renewable energy company In India
9. ENGI
French multinational ENGIE is an investor in hydrogen plants powered by renewables. ENGIE is creating hydrogen solutions in sectors ranging from mobility and heat to industrial energy consumption, particularly in Europe, Latin America, and Africa. ENGIE’s integrated strategy ties hydrogen to its overall decarbonisation ambition.
10. Fortescue Future Industries (FFI)
A subsidiary of Australia’s Fortescue Metals Group, FFI has big dreams of becoming a green hydrogen exporter to the world. Through the utilization of Australia’s rich solar and wind resources, the firm is constructing enormous hydrogen production plants intended for both local and foreign markets. The zero-emission mining and green steel ambitions of FFI are also fueling demand for in-situ hydrogen utilization.
Top Indian Company in the National Green Hydrogen Mission
Avaada is among one of the best top Indian companies positioned under the National Green Hydrogen Mission, leveraging its existing solar and wind capacity to support India’s green hydrogen production targets. Avaada’s investments in electrolysis technology and hydrogen derivatives align directly with the mission’s goal of building a domestic green hydrogen manufacturing ecosystem.
Conclusion
Green hydrogen in 2026 is no longer an experimental frontier; it is becoming a cornerstone of world clean energy systems. Avaada and other companies are demonstrating how renewable energy integration and hydrogen manufacturing can revolutionize national energy profiles. At the same time, incumbents are ramping up investments to deliver the scale that industries and governments chasing net-zero emissions need.
With further advancements in electrolysis, enhanced regulatory backing, and falling costs of renewables, the green hydrogen revolution is firmly in motion. The more nations embrace hydrogen roadmaps and climate targets, the more these firms will be at the forefront of building a low-carbon, hydrogen-based future.
