Global Water Electrolysis Market 2025-2035 – Forecast & Share Analysis
The global water electrolysis market is witnessing robust growth, driven by the growing demand for green hydrogen and supportive government policy for decarbonization. Due to rising investments, technological advancements, and the need for sustainable industrial processes, the market is set to expand significantly from 2025 to 2035. Water electrolysis is a key clean hydrogen generation technology, utilized across industries such as energy storage, hydrogen production, electronics, and more. Market participants include renowned players driving innovations and capacity expansions globally.
Latest Market Dynamics
Key Drivers
Rising investments in green hydrogen production, exemplified by Siemens Energy AG's expansion of gigawatt-scale electrolyzer factories in Europe, are accelerating market growth.
Favorable government incentives and net zero targets, such as those implemented in the US and EU, are catalyzing the adoption of water electrolysis technologies.
Key Trends
Shift towards large-scale PEM and alkaline electrolyzer deployments; in June 2024, Nel ASA delivered a record 200 MW of electrolyzer stacks for European hydrogen hubs.
Strong integration of electrolyzers with renewable energy resources (wind/solar), as highlighted by recent projects from ThyssenKrupp AG supporting industrial hydrogen demands.
Key Opportunities
Expansion in industrial decarbonization, with ITM Power securing partnerships to supply electrolysis plants for fertilizer and steel manufacturing by 2025.
Growth in grid energy storage applications, as hydrogen-based long-duration storage gains traction—evidenced by Plug Power Inc.’s collaborations for renewable microgrids.
Key Challenges
High capital costs of electrolyzer technology, with Cummins Inc. recently launching efficiency-focused solutions to address economic obstacles in early-stage adoption.
Limited availability of critical raw materials (like platinum group metals for PEM cells), forcing companies such as Enapter AG to innovate lower-cost catalyst alternatives.
Key Restraints
Lower efficiency of water electrolysis compared to other hydrogen production routes is a hurdle despite technological improvements, as noted in Sunfire GmbH’s recent R&D publications.
Dependence on abundant, clean electricity limits adoption in regions with less renewable infrastructure, highlighted by Next Hydrogen’s delayed project launches due to grid limitations.
Global Water Electrolysis Market Share (%) by Type, 2025
In 2025, Alkaline Water Electrolysis leads the market, capturing 46% share, due to its mature technology and cost-effectiveness in large-scale hydrogen generation. Proton Exchange Membrane (PEM) Electrolysis follows at 32%, offering quicker ramp-up time and compatibility with intermittent renewable energy. Solid Oxide Electrolysis, holding 12%, is gaining momentum, driven by advancements in high-temperature applications for industrial hydrogen production. Anion Exchange Membrane (AEM) Electrolysis and other emerging technologies comprise the remaining 10%. This distribution highlights the industry's current focus—balancing cost, efficiency, and integration flexibility.
Global Water Electrolysis Market Share (%) by Applications, 2025
Hydrogen production constitutes the dominant application in the water electrolysis market in 2025, accounting for 58% of the total share, driven by rising demand for green hydrogen in refining, mobility, and chemical synthesis. Energy storage, representing 18%, is on the rise owing to the crucial role of hydrogen as a long-duration storage vector in renewables-integrated grids. Power to gas, electronics & semiconductor, industrial gases, and others make up the balance, underlining the expanding yet specialized role of electrolysis in diversified industrial and energy sectors.
Global Water Electrolysis Market Revenue (USD Million), 2020-2035
Global water electrolysis market revenue is projected to climb from $2,800 Million in 2025 to nearly $15,500 Million by 2035, marking a compound annual growth rate (CAGR) of 19%. Key growth factors include accelerating investments in large-scale electrolyzer manufacturing, government policies supporting clean hydrogen, and expanded end-use applications across industries. Industry players are scaling up production capabilities, while collaborations target improved technology costs and higher operational efficiency—laying the foundation for rapid market expansion over the coming decade.
Global Water Electrolysis Market YOY (%), 2020-2035
Year-over-year (YOY) growth in the global water electrolysis market accelerates from 2024-2027, exceeding 20% due to technology adoption spurred by government initiatives and utility-scale project launches. Growth moderates slightly post-2030 as market maturity is reached in key regions, but continues its upward trajectory, maintaining double-digit rates through 2035. This trend reflects both sustained investment and the rapidly expanding base of hydrogen-based energy systems and sustainable industrial operations worldwide.
Global Water Electrolysis Market Share (%) by Regions, 2025
Europe leads the global water electrolysis market in 2025 with a 36% share, driven by strong policy frameworks and substantial installed electrolyzer capacities. Asia-Pacific follows at 29%, fueled by decarbonization strategies in China, Japan, and South Korea. North America holds 20%, underpinned by US and Canadian investments in green hydrogen infrastructure. Middle East & Africa and South America collectively account for the remaining market share, reflecting steadily emerging investments in sustainable energy projects.
Global Water Electrolysis Market Players Share (%), 2025
Market share among leading water electrolysis vendors in 2025 is concentrated among key players: Nel ASA with 15%, Siemens Energy AG at 14%, ThyssenKrupp AG at 11%, and ITM Power at 10%. Other prominent companies including McPhy Energy, Cummins Inc., Enapter AG, Plug Power Inc., and Sunfire GmbH collectively command 40%, while smaller and new entrants share the remaining 10%. This distribution highlights the dominance of established organizations, but also the influx of new innovations and regional players.
Global Water Electrolysis Market Buyers Share (%), 2025
Industrial gas producers represent 34% of the market's buyers in 2025, reflecting the continued dominance of hydrogen supply for chemicals and refineries. Utilities and energy storage companies hold 29% as electrolysis is integrated into grids and renewable microgrids. Mobility & transport comprises 18% of purchases, indicating rising fuel cell electric vehicle adoption. Electronics, research institutes, and others make up the remaining market, indicating growing pilot and specialty usage.
Study Coverage
Metrics
Details
Years
2020-2035
Base Year
2025
Market Size
Revenue (USD Million)
Regions
North America, Europe, Asia-Pacific, South America, Middle East & Africa
Segments
By Type (Alkaline Water Electrolysis, PEM Electrolysis, Solid Oxide Electrolysis, AEM Electrolysis, Others), By Application (Hydrogen Production, Power to Gas, Energy Storage, Electronics & Semiconductor, Industrial Gases, Others), By Distribution Channels (Direct Sales, Distributors, EPC Contractors, System Integrators, Online Channels, Others), By Technology (Alkaline Electrolyzer, PEM Electrolyzer, Solid Oxide Electrolyzer, AEM Electrolyzer, High-Pressure Electrolyzer, Others), By Organization Size (Small, Medium, Large)
June 2024: Nel ASA completed the delivery of a record 200 MW electrolyzer stack order for European renewable hydrogen hubs.
July 2024: Siemens Energy AG announced the launch of its new 1 GW/year electrolyzer manufacturing facility in Berlin, targeting EU green hydrogen projects.
August 2024: ITM Power secured a multi-year supply deal with a global fertilizer manufacturer for 500 MW of PEM electrolyzers.
June 2024: Plug Power Inc. partnered with a leading utility to establish a hydrogen-powered microgrid in Texas, US.
July 2024: Sunfire GmbH started construction on a high-temperature electrolysis demonstration plant in Germany, reinforcing its lead in industrial decarbonization.
Frequently Asked Questions
About the Author
Alice
Senior Research Consultant
Alice is a Senior Research Consultant specializing in market research, industry analysis, and business consulting across Machinery and Equipments. Alice brings a commercially grounded perspective to sectors shaped by changing demand, innovation, and competitive dynamics, helping turn complex market trends into clear strategic insights for business decision-makers. With 10+ years of experience across research, analytics, and strategic advisory roles, Alice has helped organizations translate data into actionable growth strategies.
Machinery and EquipmentsMarket ResearchIndustry AnalysisStrategic Consulting
Key Questions Answered
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