Hydrogen electrolyzer manufacturers are at the forefront of clean energy by developing electrolyzer devices that can split water molecules using electricity produced from renewable sources to form hydrogen.

In the last couple of years, the production and utilization of electrolyzers have seen an uptrend. According to Blackridge’s Global electrolyzer market report the global electrolysis capacity could reach 230 GW by 2030 if all announced projects are realized and 520 GW if early-stage projects are also included. Europe, Latin America, Africa, and Australia announced huge electrolysis capacity targets for 2030. 

As countries continue to strive to achieve their electrolysis capacity targets, large electrolyzer manufacturers are supporting them with innovations and enhanced electrolyzer solutions. This blog outlines the prominent players in the electrolyzer manufacturing industry. Read on to explore the top global hydrogen electrolyzer companies.

Global Top Hydrogen Electrolyzer Manufacturers [2025] (Based on production capacity)

The following table depicts the current electrolyser production capacities, derived from publicly available disclosures. Given the evolving nature of the market, these figures are subject to change since the time of compilation.

LONGi

The LONGi Group is China’s solar giant. LONGi Hydrogen—a subsidiary of LONGi Green Energy Technology Co., Ltd.—has produced a large-scale alkaline water electrolysis hydrogen production system.

According to LONGi Hydrogen, its ALK Hi1 electrolyzer can “produce hydrogen with an energy content of 4.3 kWh per normal cubic meter.” The company is committed to becoming a globally leading company in hydrogen equipment technology.

On 25th December 2024, Longi Hydrogen and HydrogenPro signed an investment agreement. Under this agreement, Longi Hydrogen and HydrogenPro with shareholders Mitsubishi Heavy Industries and Andritz AG will invest NOK 140 million (USD 12.32 million) in HydrogenPro.

A cooperation agreement has also been signed under which both parties will collaborate on scaling up the manufacturing, engineering, and service of electrolyzers in the European green hydrogen market.

On 11th September 2025, LONGI's green hydrogen pilot project in China wins The smarter E AWARD 2025. Back on 2nd August, 2025 LONGI launched a "Global BC (Back Contact) ecosystem Collaborative Innovation Center that will accelerate the BC technology further helping in innovation of the technology.

On 8th October 2024, Longi Hydrogen successfully shipped four sets of 1000Nm³/h high-density alkaline electrolyzer equipment for the first green ammonia pilot project in Uzbekistan.

Plug Power, Inc.

Plug Power Inc., the largest hydrogen electrolyzer manufacturer and electrolyzer suppliers in the USA, is a leading name among the world’s largest green hydrogen electrolyzer manufacturers. Plug Power Inc. is the leading company to use PEM (proton exchange membrane) technology. Since the technology is modular and scalable, it gives the company the leverage to customize its products per various applications and industries.

The company claims to develop efficient electrolyzers while maintaining cost-effectiveness. Plug currently develops two variants of electrolyzers - Plug EX-2125D Electrolyzer and Plug EX-4250D Electrolyzer. Both products are optimized for large-scale green hydrogen production.

On 11th July 2-25, Plug power has secured a new hydrogen supply agreement from a US-based industrial gas partner until 2030. Back on 25th February 2025, Plug power announced its Louisiana Hydrogen plant I St. Gabriel, Louisiana is set to produce 15-ton-per-day (TPD) in the Q1 of 2025 with Robust Safety Standards.

On 17th February 2025, Plug Power announced its plans to build several giga-watt electrolyzer projects in India before 2030.

In January 2025, Plug Power received a USD 1.7 billion loan guarantee from the U.S. Department of Energy one of the last energy-related loans from the Biden administration.

On 15th January 2025, Plug Power announced a landmark purchase agreement with Allied Green Ammonia (AGA). Under this agreement, Plug Power will supply a 3 GW electrolyzer capacity to AGA's state-of-the-art green hydrogen-to-ammonia plant, currently under development in Australia.

These electrolyzers will be powered by AGA's 4.5 GW solar plant. Plug Power will develop a Basic Engineering and Design Package (BEDP). The FID is expected in Q2 2025. and the delivery of plug power's PEM electrolyzer is scheduled for Q1 of 2027.

 On 12th September 2024, Plug Power signed a contract with H2DRIVEN to provide a Technical Evaluation Phase (TEP) to support 25 MW PEM electrolyzers during FEED (Front End Engineering Design) process for the green methanol project in Portugal.
 

Hygreen Energy

Hygreen Energy is one the top electrolyzer manufacturers in China and the world. Currently having the capacity to produce 2000 MW, the company’s plans include boosting the production capacity to 5000 MW. With over 60 patents to its name, the company has established itself as the best alkaline and PEM electrolyzer manufacturer.

Hygreen's electrolyzer solutions are suitable for several applications, including industrial decarbonization, mobility, energy storage, and other green hydrogen use cases. Hygreen’s PEM electrolyzer solutions range from 25 kW to 15 MW per single stack.

On 7th July 2025, Hygreen Energy announced its partnership with Robert Bosch Gmbh. Under this partnership, Robert Bosch will integrate Bosch's Hybrion PEM electrolysis stacks into Hygreen's large scale hydrogen production systems.

On 22nd March 2025, Hygreen Energy announced it had been selected by Corfo, Chile's economic development agency, and has been awarded financing to establish a state-of-the-art electrolyzer production facility in Chile. The complete details of the agreement are not fully disclosed.  

On 10th December 2024, Hygreen Energy announced its successful delivery of 25 MW electrolyzer system to Huadian Weifang Power Generation Co., Ltd, This electrolyzer delivery is designed to produce 3.6 tons of hydrogen per day with 99.999% purity. These electrolyzers are integrated into the existing Huadian Weifang power plant.

On 16th September 2024, Hygreen Energy launched its new AEM Electrolyser system. It is the company's first-ever Anion Exchange Membrane (AEM) electrolyzer system.  The delivery of this 10 kW is expected to be commissioned in October 2024. 

On 3rd September 2024, Hygreen Energy announced its plans to build a large-scale green hydrogen production plant of 1.12 GW in Huelva, Spain. Additionally, it plans to build a new 5 GW production facility to produce 5 MW electrolyzers that comply with European compliance standards. 

Bloom Energy

Bloom Energy is one of the largest electrolyzer manufacturers in the market. It produces solid oxide fuel cells that produce electricity on-site.

Leveraging decades of solid oxide electrolyzer experience, the company has developed “the world’s most efficient hydrogen electrolyzer” (source: company website) with a modular design allowing continuous operations and concurrent maintenance within the hydrogen infrastructure.

In addition, Bloom Energy ensures a robust supply chain base with over 2 GW of electrolyzer production capacity. Moreover, the absence of oxygen in the hydrogen stream eliminates the need for deoxygenation units, thus reducing the reliance on fossil fuels and paving the way for pure hydrogen projects.

On 13th February 2025, Bloom Energy and Chart Industries announced their partnership for carbon capture. This collaboration is intended for energy-intensive sectors such as data centers and manufacturing facilities. Under this agreement, Bloom Energy will use its high-temperature fuel cell technology to generate electricity from natural gas without combustion. The high temperature will produce an exhaust stream with a high concentration of CO2. Chart Industries will use its carbon capture technology to process this concentrated CO2 through sequestration. 

On 7th November 2024, Bloom Energy Corporation announced its landmark project to deliver fuel cells to the largest single-site installation. This is an 80 MW project developed in partnership with SK Eternix in North Chungcheong Province, South Korea. To know more about the project subscribe to our global hydrogen projects database.  

ITM Power PLC

ITM Power PLC is a clean fuel and energy storage company that designs, manufactures, and integrates electrolyzers to produce green hydrogen using renewable electricity and tap water.

The company’s electrolyzer portfolio comprises:

• HGAS3SP (medium-sized containerized PEM electrolyzer system)

• 3MEP CUBE (a reliable and highly versatile electrolyzer with a unique design to cope with heat expansion)

On 26th August 2025, ITM Power announced its partnership with ABO Energy on green hydrogen projects. n 25th June 2025,ITM Power's subsidiary Hydropulse announced strategic partnership with Eternal Power to boost green hydrogen deployment in Germany.

On 13th February 2025, ITM Power signed a contract to supply four NEPTUNE Vunits, totaling a 20 MW capacity for the first phase of Norway's Hydrogen HUB Agder project. This project is 100% owned by Norwegian energy company Greenstat a subsidiary of La Française de l’Energie SA (FDE). The project is planned for a period of two years with operation by the end of 2026. The first phase is under construction with the second phase expected to be an additional 40 MW which is planned in 2027.

On 6th November 2024, ITM Power Plc announced its plans for the development of its next-generation stack platform, "CHRONOS".

Furthermore, ITM Power Plc signed a 500 MW capacity reservation with an undisclosed customer and was appointed by UK's Hygen Energy as the preferred supplier of PEM electrolyzer for its upcoming hydrogen projects across UK and Europe.

PERIC Hydrogen Technologies Co., Ltd.

Purification Equipment Research Institute of CSIC (PERIC) is a state-level R&D institute with integrated capabilities in R&D, design and manufacture, and H2 generation service.

PERIC also has a vast manufacturing base for alkaline and PEM water electrolysis. Its wide product portfolio includes hydrogen-rich water, containerized H2 generators, and PEM-type H2 generators.

On 28th February 2025, Metacon a subsidiary of Metacon Technology AB signed a supplementary agreement with PERIC. Under this agreement, Metacon is given the right by PERIC to manufacture hydrogen stacks which are central modules in electrolysis.

McPhy Energy S.A.

McPhy offers a wide range of electrolyzers that meet customers’ needs in terms of output pressure and pureness. These electrolyzers are ideal for light applications like goldsmithing and various multi-MW applications (such as heavy industry and mobility).

McPhy’s electrolyzers are available in the following variants:

• Small (includes the Piel range (0.4 to 10 Nm3/h | 1 to 8 bar) and the McLyzer range (20 Nm3/h at 30 bar))

• Large (McLyzer range: 100 to 800 Nm3/h at 30 bar)

• Augmented (Augmented McLyzer: 20, 100 MW and more (GW) architectures)

On 25th September 2024, McPhy Energy announced an update about the assembly and commissioning of two 24 MW “McLyzer 3200-30” electrolyzers in central Europe. The FID (Final Investment Decision) is expected to take place at the end of 2024 and commissioning of the equipment is expected by 2026.

Electric Hydrogen

Electric Hydrogen Co. is a US-based electrolyzer manufacturer and green hydrogen solution provider. Founded by David Eaglesham to drive down electrolyzer costs meaningfully while maintaining superior efficiency, the company has a production capacity of 1200 MW. 

The company caters to large industrial users of hydrogen and large-scale clean energy and fuel developers who aim to decarbonize their existing processes by deploying green hydrogen. The company's products are suitable for industrial applications in green ammonia, green steel production, and power sectors.

On 16th September 2025, Electric Hydrogen secured a contract to supply electrolysers from HIF Global for Texas e-fuels project.

On 6th March 2025, Electric Hydrogen announced its partnership with Titan for the fabrication and assembly of its 100 MW electrolyzer plant product. This will be manufactured in Titan's new facility in Columbus, Texas. This move is driven by factors like lowered total installed costs for electrolytic hydrogen.

On 27th February 2025, Electric Hydrogen announced the selection of Ingeteam a European leader in power conversion to supply rectifier systems for its 100 MW green hydrogen plants in Europe. These rectifier systems have already been implemented at the San Jose, California plant of Electric Hydrogen.

On 18th November 2024, Electric Hydrogen Co announced that it had been selected by Uniper to design a 200 MW electrolyzer plant within Uniper's Green Wilhelshaven project in north Germany. The pre-FEED (Front-End Engineering and Design) work for the project began by Electric Hydrogen in October 2024.

Thyssenkrupp Nucera

Thyssenkrupp Nucera’s vision is to be the “#1 provider for hydrogen and chlorine technologies.” The company’s large-scale solutions for green value chains are instrumental in achieving climate neutrality and creating a new industry ecosystem.

Thyssenkrupp Nucera’s experience in the chlor-alkali business forms a solid foundation for alkaline water electrolysis technology and scale-up. The company’s large-scale water electrolysis technology can meet the highest market demands.

John Cockerill

John Cockerill is known as the best in pressurized alkaline electrolyzer manufacturers. They also offer expertise in pressurized and gas treatment equipment. John Cockerill’s electrolyzers are used in various industries (chemicals, steelmaking, power plants, etc.) and are designed for friendly O&M and fast and easier installation.

According to the company, John Cockerill’s 5 MW single-stack pressurized commercial electrolyzer is the “largest on the market” and “a must for low CAPEX and OPEX.” The company also builds hydrogen refueling stations with ranges from 100 to 1,000 kg (capacity)—suitable for light and heavy-duty applications, such as buses and trucks.

On 20th December 2024, John Cockerill announced it would supply 210 MW of its advanced pressurized alkaline electrolyzer units for the green hydrogen facility to be constructed in Texas. Additionally, it will provide technical services for the FEED phase of the project. 

On 30th October 2024, AM Green placed an order with John Cockerill for the supply of India's largest electrolyzer order of 1.3 GW for one of the world's largest green hydrogen ammonia projects. The FID has been achieved by AM Green in August 2024. Track these project details by subscribing to our global hydrogen projects database.

Cummins Inc.

Cummins’ HyLYZER®—1000 is an exceptionally compact, modular water electrolyzer system based on PEM water electrolysis technology, which meets the highest safety standards.

Cummins Inc. will supply a 2.5-megawatt electrolyzer manufacturing capacity to HysetCo, a hydrogen hub venture established by Air Liquide, Idex, STEP, and Toyota. This move is part of Cummins Inc.'s commitment to furthering the green hydrogen economy globally. These PEM electrolyzer manufacturers will support HysetCo’s ambitious project to develop and operate the world’s first large-scale hydrogen mobility platform.

Nel ASA

Nel ASA has been pioneering renewable hydrogen for almost a century. The company manufactures electrolyzers and provides hydrogen fueling stations for power-to-gas and power-to-industry markets.

Nel ASA is a globally recognized leader in alkaline and PEM (Proton Exchange Membrane) water electrolysis technologies and makes electrolyzers for industry, Power-to-X, transport, and other applications.

Nel ASA offers the following electrolyzers:

• Containerized PEM Electrolyzer (M SERIES CONTAINERIZED)

• Atmospheric Alkaline Electrolyzer (A SERIES)

• PEM Electrolyzer (C, H, M, and S SERIES)

On 27th March 2025, Nel Hydrogen US a subsidiary of Nel ASA received a purchase order for PEM electrolyser stacks worth USD 6 million from Collins Aerospace. These hydrogen stacks will be used by the US Navy to produce oxygen for critical life support for onboard submarines. The initial deliveries are scheduled for late 2025. The number of stacks purchased is undisclosed.

On 21st March 2025, Nel Hydrogen US announced it received a purchase order for two MC500 containerized PEM electrolyzers each with 2.5 MW capacity totalling 5 MW capacity. The order is valued worth USD 7 million which will designated to produce hydrogen for a new steel mill in the United States. 

On 22nd October 2024, Nel ASA was awarded EUR 135 million for the industrialization of next-generation pressurized alkaline technology EU Innovation Fund. 

HydrogenPro ASA

HydrogenPro ASA (HydrogenPro) designs and supplies advanced hydrogen production plants, which are adaptable for seamless integration, scalable to site requirements, and tailored to clients’ needs.

While the company supplies modular and scalable-to-need electrolyzer systems requiring minimal floor space, it offers powerful units for large-scale hydrogen plants. In addition, HydrogenPro’s high-pressure electrolysis system is known as one of the top green hydrogen producers with outstanding energy efficiency.

On 27th March 2025, HydrogenPro received a purchase order for alkaline electrolyzers worth USD 2.5 million. The manufacturing of this order is to start in early May 2025. The client details are undisclosed by the company.

On 3rd March 2025, HydrogenPro ASA announced it received a 100 MW electrolyzer unit order from ANDRITZ for its project in Germany. Currently, ANDRITZ is awaiting the FID and once received it will provide an EPC basis contract. The plant will use HydrogenPro alkaline technology for the electrolysis process.  

Sunfire GmbH

Sunfire GmbH (Sunfire) is a globally recognized industrial electrolysis company. Sunfire’s electrolyzers produce renewable hydrogen and syngas from renewable electricity, water steam, and captured CO2.

The company’s electrolysis solutions help climate-conscious businesses and energy-intensive industries decarbonize entire value chains.

Sunfire’s hydrogen electrolysis solutions comprise:

• SUNFIRE-HYLINK ALKALINE

• SUNFIRE-HYLINK SOEC

On 27th February 2025, Sunfire GmbH announced its plans to supply a 100 MW alkaline electrolyzer for Nukleus's 3rd phase of construction. This project is being built by RWE as a 300 MW plant for producing green hydrogen on the site of its gas-fired power plant in Lingen. Currently, two of three 100 MW electrolyzers are due to be installed by RWE.

On 20th November 2024, Sunfire GmbH was awarded a new 50 MW electrolyzer contract with Ren-Gas a Finland hydrogen project developer for its hydrogen plant in Tampere.

Ohmium International, Inc.

Ohmium International, Inc. (Ohmium) is a hydrogen electrolyzer company with centers of excellence for manufacturing and R&D in India and the U.S. Ohmium’s electrolyzer products are ideal for industrial, mobility, and Power-to-X applications. The company also provides O&M field services for hydrogen electrolyzer systems.

Key advantages of the Ohmium Lotus™ Mark 1 and Mark 2 PEM Hydrogen Electrolyzers include:

• Compact and scalable

• Dynamic operation

• Flexibility

• High efficiency, plant availability, and system integration

• Interlocking modular system design

• Rapid installation

• Safe and reliable

On 25th June 2025, Ohmium International signed a MoU with Toyota Kirloskar Motor Private Limited (India). Under this MoU, both the partners will develop hydrogen solutions using Ohmium's PEM electrolysers and Toyota's fuel cell modules.

On 18th March 2025, Ohmium International Inc and Res Integra announced deploying 4 MW electrolyzers. Res Integra is installing an electrolyzer system of 700 tonnes of hydrogen capacity using Ohium International PEM electrolyzer technology. This is been installed at the Siracusa (Sicily region, Italy). The PEM electrolyzer from Ohium is expected to be shipped in early 2025. The project will be powered by solar PV and produce green hydrogen that will be used in regional industrial operations and mobility. 

Some other notable hydrogen electrolyzer manufacturers in the world 

Enapter S.r.l.
Kylin Technology Co., Ltd. ( also known as Shenzhen Kylin-tech )
Hystar AS
Elcogen AS
Erre Due s.p.a. ( Erredue )
Topsoe A/S
Air Liquide S.A. and Siemens Energy AG
H-TEC SYSTEMS GmbH
Asahi Kasei Corporation
Stiesdal A/S

Global Hydrogen Electrolyser Market: Cost Reduction, Targets and Capacity Expansion by 2030

According to the IEA (International Energy Agency), global electrolysis capacity is expected to reach 520 GW by 2030 including the projects in the early stages of development. The global electrolyzer manufacturing capacity is expected to reach more than 165 GW per year by 2030.

Alkaline and PEM electrolyzers continue to be the most commonly used technologies due to their high efficiency and cost-effectiveness. SOEC (Solid Oxide Electrolysis) technology is slowly gaining traction due to its potential for waste heat integration but is in the development phase for industrial application. 

A Region-wise Breakdown of the Global Electrolyzer Market

China, Europe, and North America continue to dominate the electrolyzer manufacturing capacity. Supportive government policies and initiatives in these regions are accelerating investment and capacity growth.

• China: The Chinese government has challenged domestic firms to cut down the cost of proton exchange membrane (PEM) electrolyzers to below USD 330/kW by 2026 and also provide solutions to increase the efficiency of PEM electrolyzers, advance existing solid-oxide electrolyzer systems and develop hydrogen-capable steel pipelines.

• Europe: On the other hand, Europe is hosting the "Electrolyser Partnership" to bring together electrolyzer manufacturers and suppliers of components and materials together to achieve a combined annual electrolyzer manufacturing capacity of 17.5 GW by 2025 in Europe.

  As a part of the electrolyzer manufacturing capacity expansion, Europe is establishing ENNOH (European Network of Network Operators of Hydrogen) which is expected to be established by the EU (European Union) in 2025.

  The ENNOH is an independent association that will represent the future hydrogen transmission network and will coordinate with the existing EU Hydrogen Transmission Network of Operators (HTNOs) to fulfill the obligations of the EU hydrogen and gas decarbonization package.

• United States: The DOE (Department of Energy) in March 2024, announced USD 750 million for funding 52 projects across 24 states reducing the cost of hydrogen and bolstering the American hydrogen industry. 

  Further in September 2024, DOE announced an additional USD 8 million for seven projects under the Roll-to-Roll Consortium a laboratory-led initiative funded by DOE to support advanced electrolyzer and fuel cell manufacturing RD.

• India:  India continues to foster domestic electrolyzer manufacturing under the National Green Hydrogen Mission. As of March 2025, India boasts 12,000 TPA of green hydrogen production and has so far approved 3 GW of electrolyzer manufacturing capacity per annum. In 2024, (Solar Energy Corporation of India Limited) SECI allocated 1.5 GW of electrolyzer manufacturing capacity to eight companies under the Production Linked Incentive Scheme (PLI) for electrolyzer manufacturing scheme. 

With strong backing from government initiatives, funding programs, and public-private partnerships, the global electrolyzer market is to witness major market trends and achieve the hydrogen goals set for 2030.

Wrapping Up

Green hydrogen has the potential to become a fuel of the future. But it greatly depends upon hydrogen electrolyzers. The manufacturers in this industry have a critical role in developing highly efficient, cost-effective, and scalable electrolyzers. With support and encouragement from governments and the emergence of new players in this sector, it is poised to grow substantially in the coming years.

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