Top Green Hydrogen Companies: Propelling the Clean Energy Transition

Several nations are focusing on the goal of decarbonizing the planet by 2050. Decarbonizing the synthesis of an element like hydrogen, which results in green hydrogen, is essential to accomplishing this. But have you ever wondered how this is actually done? And what influence will it have in the coming years?

In this blog post, we explain to you the essentials of green hydrogen. We cover the key metrics for the green hydrogen market and major factors driving market growth. The major providers of green hydrogen solutions have also been assessed. Continue reading!

What is Green Hydrogen?

Green hydrogen is a sustainable and clean energy source. Green hydrogen has the potential to be highly significant as people search for fossil fuel substitutes. Green hydrogen refers to hydrogen gas produced by electrolysis using renewable energy sources, such as solar or wind power. It is regarded as "green" because, unlike conventional techniques that rely on fossil fuels, the production process produces no greenhouse gas emissions.

Also, green hydrogen differs from other kinds of hydrogen, such as gray or blue hydrogen. This is because the electricity used in the electrolysis process comes from renewable energy sources, primarily solar and wind power. Green hydrogen is a part of the renewable energy market.

What Are Green Hydrogen Market Stats?

The green hydrogen market is expected to witness robust growth, as per our latest market assessment. The market for green hydrogen stood at USD 12.31 billion in 2024. It is anticipated to account for a CAGR of 41.46% between 2025 and 2034.

The shift towards cleaner and sustainable sources of energy as part of the broader strategies to mitigate the effects of climate change is driving market growth. The green hydrogen market is also benefiting from the rising integration of renewable energy sources in the production of green hydrogen.

What Technologies Are Used for Green Hydrogen Production?

Alkaline Electrolyzer

This is one of the most established technologies for the production of green hydrogen. A liquid alkaline solution is used as an electrolyte here. The passage of the electric current through the electrolyte results in the water splitting into hydrogen and oxygen. The movement of the hydroxide ions between two electrodes allows for the chemical reaction to take place. Alkaline electrolyzers can operate for prolonged periods and have a low cost. Their use is suitable for large-scale hydrogen generation.

Polymer Electrolyte Membrane (PEM) Electrolyzer

PEM electrolyzers offer an advanced method for the production of green hydrogen. They make use of a solid polymer membrane rather than a liquid electrolyte. The polymer membrane conducts protons from the anode to the cathode. This allows for the efficient separation of hydrogen and oxygen. A key benefit of these electrolyzers is that they can rapidly respond to changes in power supply. As such, they are suitable to integrate with the varying renewable energy sources.

Which Are the Top Green Hydrogen Market Companies?

The market for green hydrogen is characterized by intense rivalry as companies try to take advantage of the growing need for environmentally friendly energy sources. Both well-established multinational companies and start-up entrepreneurs compete for dominance in the green hydrogen industry. Here are some of the top green hydrogen market leaders:

Air Liquide

French multinational Air Liquide provides industrial gases and services to a range of industries, including chemical, electrical, and medical producers. Established in 1902, the company operates in more than 80 countries and ranks as the second-largest provider of industrial gases by revenue. Air Liquide's head office is in Paris. It also has major sites in Houston, Japan, Delaware, Newark, Shanghai, Frankfurt, and Dubai.

Air Products Inc.

Leonard Parker Pool established Air Products in 1940 in Detroit with the goal of providing on-site production and sales of various types of industrial gas. Moreover, Air Products provides atmospheric industrial gases—such as nitrogen, oxygen, hydrogen, argon, and carbon dioxide—as well as performance materials and chemical intermediates. The company is also operational in the specialty gas market. It serves clients in the technology, energy, healthcare, food, and industrial sectors globally.

Cummins Inc.

Cummins Inc. is an American multinational company that’s operational in the green hydrogen market. It develops, produces, and markets power generation, filtration, and engine products. Cummins also maintains engines and associated machinery, such as trucks, fuel systems, controls, air handling, filtration, pollution control, and electricity-producing systems. With its main office in Columbus, Indiana, Cummins distributes its products to about 190 nations and territories.

Siemens Energy

Siemens Energy AG is an energy firm created by spinning off Siemens's previous Gas and Power division. The company uses its Silyzer electrolyzer systems for the production of green hydrogen. The company is also involved in the development of large-scale production facilities. Some of its innovative projects include the integration of electrolyzers directly into offshore wind turbines.

Uniper SE

Based in Düsseldorf, Germany, Uniper SE is a worldwide energy corporation that the state has owned since late 2022. The company is actively involved in several green hydrogen projects. It aims to integrate green hydrogen into its long-term energy strategy as a replacement for fossil fuels.

The Closure

Green hydrogen offers a sustainable source of energy. As the cost of electrolysis technology and renewable energy drops, the green hydrogen market is anticipated to expand. The top green hydrogen companies use their resources and knowledge while creative upstarts advance new ideas and technological advancements.