Water Electrolysis Global Market Report 2026

Water electrolysis is the process of using electricity to decompose water (H2O) into its basic elements, hydrogen (H2) and oxygen (O2). By passing an electric current through water that contains an electrolyte, hydrogen is generated at the cathode (negative electrode) and oxygen at the anode (positive electrode). This technique is commonly employed for generating hydrogen for industrial uses, clean energy, and fuel cells.

The primary types of products in the water electrolysis market include alkaline electrolyzers, proton exchange membrane (PEM) electrolyzers, solid oxide electrolyzer cells (SOEC), and anion exchange membrane (AEM) electrolyzers. Alkaline electrolysis utilizes an alkaline electrolyte, such as potassium hydroxide (KOH) or sodium hydroxide (NaOH), to facilitate the water splitting process. Input power options for these systems vary from below 2 kW, between 2 kW and 5 kW, to above 5 kW, with hydrogen production capacities categorized as below 500 l/hr, between 500 and 2000 l/hr, and above 2000 l/hr. End-user applications include ammonia production, methanol production, refining, power and energy storage, transportation or mobility, and other sectors.

Note that the outlook for this market is being affected by rapid changes in trade relations and tariffs globally. The report will be updated prior to delivery to reflect the latest status, including revised forecasts and quantified impact analysis. The report's Recommendations and Conclusions sections will be updated to give strategies for entities dealing with the fast-moving international environment.

Tariffs are impacting the water electrolysis market by increasing costs of imported electrolyzer stacks, power electronics, membranes, and advanced materials required for hydrogen production systems. Europe and Asia-Pacific are most affected due to reliance on specialized imported components, while North America faces higher system integration costs. These tariffs have increased project capital expenditure and extended deployment timelines. However, they are also accelerating domestic manufacturing of electrolyzers, regional supply chain development, and innovation in locally sourced hydrogen technologies.

The water electrolysis market research report is one of a series of new reports from The Business Research Company that provides water electrolysis market statistics, including water electrolysis industry global market size, regional shares, competitors with a water electrolysis market share, detailed water electrolysis market segments, market trends and opportunities, and any further data you may need to thrive in the water electrolysis industry. This water electrolysis market research report delivers a complete perspective of everything you need, with an in-depth analysis of the current and future scenario of the industry.

The water electrolysis market size has grown strongly in recent years. It will grow from $8.46 billion in 2025 to $9.26 billion in 2026 at a compound annual growth rate (CAGR) of 9.4%. The growth in the historic period can be attributed to expansion of industrial hydrogen demand, availability of grid-connected electricity, early adoption of alkaline electrolysis technology, growth of chemical and refining industries, initial renewable energy integration.

The water electrolysis market size is expected to see strong growth in the next few years. It will grow to $13.16 billion in 2030 at a compound annual growth rate (CAGR) of 9.2%. The growth in the forecast period can be attributed to rising investments in hydrogen economy, increasing government decarbonization targets, expansion of renewable power capacity, growing adoption of hydrogen in mobility and storage, continuous reduction in electrolyzer costs. Major trends in the forecast period include expansion of green hydrogen production projects, rising adoption of pem and alkaline electrolyzers, growing integration with renewable energy sources, increasing focus on electrolyzer efficiency improvements, deployment of large-scale industrial electrolysis systems.

The rising demand for hydrogen production is expected to propel the growth of the water electrolysis market going forward. Hydrogen production refers to the process of generating hydrogen gas through methods such as electrolysis, steam methane reforming, and biomass gasification. This demand is driven by the increasing global focus on reducing carbon emissions and transitioning toward cleaner energy sources. Water electrolysis supports hydrogen production by using electricity to split water into hydrogen and oxygen, offering a clean and sustainable method of hydrogen generation, particularly when powered by renewable energy. For instance, in October 2024, according to the International Energy Agency (IEA), global hydrogen production reached 97 million tonnes in 2023, with less than 1% produced through low-emissions pathways. The IEA also reported that installed water-electrolyser capacity increased to 1.4 GW by the end of 2023 and is projected to reach 5 GW by the end of 2024, with China accounting for nearly 70% of committed capacity additions. Therefore, the rising demand for hydrogen production is driving the growth of the water electrolysis market.

Key players in the water electrolysis market are focusing on developing innovative products, such as proton exchange membrane (PEM) water electrolyzers, to improve hydrogen production efficiency and lower energy consumption. PEM water electrolyzers use a solid polymer electrolyte to separate water into hydrogen and oxygen through an electrochemical process, offering high efficiency and versatility in hydrogen production. For instance, in March 2024, Sungrow Power Supply Co. Ltd., a manufacturing company based in China, introduced the 300Nm3/h PEM Water Electrolyzer. This device produces 300Nm3 of hydrogen per hour with high efficiency, requiring less than 4.15kWh/Nm3. It is designed to accommodate flexible hydrogen production using renewable energy sources, ensuring optimal performance in various scenarios.

In April 2024, Andritz AG, an Austria-based machinery manufacturing firm, acquired a 13.8% stake in HydrogenPro for an undisclosed sum. This acquisition bolsters the strategic partnership between Andritz and HydrogenPro, improving their capacity to serve Andritz's customers more effectively. HydrogenPro, based in Norway, specializes in high-pressure alkaline electrolyzers (AEL), which are essential for large-scale production of green hydrogen.

Major companies operating in the water electrolysis market are Robert Bosch GmbH, ThyssenKrupp AG, Siemens Energy AG, Linde AG, Toshiba Energy Systems & Solutions Corporation, Cummins Inc., Sungrow Power Supply Co. Ltd., LONGi Green Energy Technology Co. Ltd., Plug Power Inc., Sunfire GmbH, Nel ASA, Ohmium International Inc., Shandong AUYAN New Energy Technology Co. Ltd., HydrogenPro ASA, Ceres Power Holdings plc, McPhy Energy SA, Horizon Fuel Cell Technologies Pte Ltd, ITM Power PLC, Giner ELX Inc., SES Hydrogen, Enapter AG, Elogen SAS, Next Hydrogen Solutions Inc., CAPLINQ Corporation, GreenH Electrolysis

Europe was the largest region in the water electrolysis market in 2025. North America is expected to be the fastest-growing region in the forecast period. The regions covered in the water electrolysis market report are Asia-Pacific, South East Asia, Western Europe, Eastern Europe, North America, South America, Middle East and Africa.

The countries covered in the water electrolysis market report are Australia, Brazil, China, France, Germany, India, Indonesia, Japan, Taiwan, Russia, South Korea, UK, USA, Italy, Spain, Canada

The water electrolysis market consists of revenues earned by entities by providing services such as electrolyzer installation and commissioning, maintenance and repair services, consulting, and system design. The market value includes the value of related goods sold by the service provider or included within the service offering. The water electrolysis market also includes sales of polymer electrolyte membrane water electrolyzers, high-pressure electrolyzers, and modular electrolyzers. Values in this market are 'factory gate' values, that is the value of goods sold by the manufacturers or creators of the goods, whether to other entities (including downstream manufacturers, wholesalers, distributors and retailers) or directly to end customers. The value of goods in this market includes related services sold by the creators of the goods.

The market value is defined as the revenues that enterprises gain from the sale of goods and/or services within the specified market and geography through sales, grants, or donations in terms of the currency (in USD unless otherwise specified).

The revenues for a specified geography are consumption values that are revenues generated by organizations in the specified geography within the market, irrespective of where they are produced. It does not include revenues from resales along the supply chain, either further along the supply chain or as part of other products.

Water Electrolysis Market Global Report 2026 from The Business Research Company provides strategists, marketers and senior management with the critical information they need to assess the market.

This report focuses water electrolysis market which is experiencing strong growth. The report gives a guide to the trends which will be shaping the market over the next ten years and beyond.

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Where is the largest and fastest growing market for water electrolysis ? How does the market relate to the overall economy, demography and other similar markets? What forces will shape the market going forward, including technological disruption, regulatory shifts, and changing consumer preferences? The water electrolysis market global report from the Business Research Company answers all these questions and many more.

The report covers market characteristics, size and growth, segmentation, regional and country breakdowns, total addressable market (TAM), market attractiveness score (MAS), competitive landscape, market shares, company scoring matrix, trends and strategies for this market. It traces the market's historic and forecast market growth by geography.

• The market characteristics section of the report defines and explains the market. This section also examines key products and services offered in the market, evaluates brand-level differentiation, compares product features, and highlights major innovation and product development trends.
• The supply chain analysis section provides an overview of the entire value chain, including key raw materials, resources, and supplier analysis. It also provides a list competitor at each level of the supply chain.
• The updated trends and strategies section analyses the shape of the market as it evolves and highlights emerging technology trends such as digital transformation, automation, sustainability initiatives, and AI-driven innovation. It suggests how companies can leverage these advancements to strengthen their market position and achieve competitive differentiation.
• The regulatory and investment landscape section provides an overview of the key regulatory frameworks, regularity bodies, associations, and government policies influencing the market. It also examines major investment flows, incentives, and funding trends shaping industry growth and innovation.
• The market size section gives the market size ($b) covering both the historic growth of the market, and forecasting its development.
• The forecasts are made after considering the major factors currently impacting the market. These include the technological advancements such as AI and automation, Russia-Ukraine war, trade tariffs (government-imposed import/export duties), elevated inflation and interest rates.
• The total addressable market (TAM) analysis section defines and estimates the market potential compares it with the current market size, and provides strategic insights and growth opportunities based on this evaluation.
• The market attractiveness scoring section evaluates the market based on a quantitative scoring framework that considers growth potential, competitive dynamics, strategic fit, and risk profile. It also provides interpretive insights and strategic implications for decision-makers.
• Market segmentations break down the market into sub markets.
• The regional and country breakdowns section gives an analysis of the market in each geography and the size of the market by geography and compares their historic and forecast growth.
• Expanded geographical coverage includes Taiwan and Southeast Asia, reflecting recent supply chain realignments and manufacturing shifts in the region. This section analyzes how these markets are becoming increasingly important hubs in the global value chain.
• The competitive landscape chapter gives a description of the competitive nature of the market, market shares, and a description of the leading companies. Key financial deals which have shaped the market in recent years are identified.
• The company scoring matrix section evaluates and ranks leading companies based on a multi-parameter framework that includes market share or revenues, product innovation, and brand recognition.

Scope

• Markets Covered:1) By Product Type: Alkaline Electrolyzer; Proton Exchange Membrane (PEM) Electrolyzer; Solid Oxide Electrolyzer Cell (SOEC); Anion Exchange Membrane (AEM) Electrolyzer
• 2) By Input Power: Below 2 kW; 2 kW - 5 kW; Above 5 kW
• 3) By Hydrogen Production: Below 500 L/hr; 500 - 2000 L/hr; Above 2000 L/hr
• 4) By End-User Applications: Ammonia Production; Methanol Production; Refining Industry; Power and Energy Storage; Transportation Or Mobility Industry; Other End User Applications
• Subsegments:
• 1) By Alkaline Electrolyzer: Liquid Alkaline Electrolyzers; Pressurized Alkaline Electrolyzers; High-Temperature Alkaline Electrolyzers
• 2) By Proton Exchange Membrane (PEM) Electrolyzer: Low-Temperature PEM Electrolyzers; High-Temperature PEM Electrolyzers; Compact PEM Electrolyzers
• 3) By Solid Oxide Electrolyzer Cell (SOEC): Intermediate Temperature SOEC; High-Temperature SOEC; SOEC with Integrated Heat Recovery
• 4) By Anion Exchange Membrane (AEM) Electrolyzer: AEM Electrolyzers for Water Splitting; High-Performance AEM Electrolyzers; AEM Electrolyzers with Improved Durability
• Companies Mentioned: Robert Bosch GmbH; ThyssenKrupp AG; Siemens Energy AG; Linde AG; Toshiba Energy Systems & Solutions Corporation; Cummins Inc.; Sungrow Power Supply Co. Ltd.; LONGi Green Energy Technology Co. Ltd.; Plug Power Inc.; Sunfire GmbH; Nel ASA; Ohmium International Inc.; Shandong AUYAN New Energy Technology Co. Ltd.; HydrogenPro ASA; Ceres Power Holdings plc; McPhy Energy SA; Horizon Fuel Cell Technologies Pte Ltd; ITM Power PLC; Giner ELX Inc.; SES Hydrogen; Enapter AG; Elogen SAS; Next Hydrogen Solutions Inc.; CAPLINQ Corporation; GreenH Electrolysis
• Countries: Australia; Brazil; China; France; Germany; India; Indonesia; Japan; Taiwan; Russia; South Korea; UK; USA; Italy; Spain; Canada
• Regions: Asia-Pacific; South East Asia; Western Europe; Eastern Europe; North America; South America; Middle East; Africa
• Time Series: Five years historic and ten years forecast.
• Data: Ratios of market size and growth to related markets, GDP proportions, expenditure per capita,
• Data Segmentations: country and regional historic and forecast data, market share of competitors, market segments.
• Sourcing and Referencing: Data and analysis throughout the report is sourced using end notes.
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