Electrolyzers for Hydrogen Production – Technical and Economic Characteristics

Hydrogen matters for development. For many countries, developing clean hydrogen industries is a strategic opportunity to create new exports, generate jobs, and drive economic growth while reducing emissions in polluting sectors such as steel, chemicals, and shipping.

Emerging markets and developing countries face challenges in scaling hydrogen production due to the sector's capital intensity, technical complexity, and financial risks. Additionally, there is limited information about electrolyzers-the key technology for clean hydrogen production-such as what technologies are financially viable, which suppliers are dependable, the factors affecting actual installation costs, and strategies for risk mitigation.

The report, Electrolyzers for Hydrogen Production: Technical and Economic Characteristics, translates deep technical analysis into practical guidance.

As the first comprehensive global assessment of electrolyzer technologies, it offers governments, investors, and project developers insights into how costs are evolving, what deployment pathways look like, what infrastructure is required, and what policy frameworks can unlock investment. This report was produced by the Energy Sector Management Assistance Program (ESMAP) under the 10 GW Lighthouse Initiative.

Q&A

Why do electrolyzers matter?

Electrolyzers are the core technologies in the clean hydrogen value chain. They can help lower emissions in energy-intensive and "hard-to-abate" industries such as steel, chemicals, and shipping, supporting industrial transformation, energy security, and job creation.

What is the current state of global electrolyzer manufacturing capacity?

Global annual electrolyzer manufacturing capacity stands at 61 GW, with an additional 16 GW under construction. Despite growing demand, supply has outpaced it, resulting in significant manufacturing overcapacity and many plants operating below optimal utilization levels.

Which electrolyzer technologies dominate the market?

The market is dominated by two technologies: alkaline (ALK) and proton exchange membrane (PEM). ALK technology leads the market, accounting for 64% of installed capacity and 84% of projects under construction. PEM and emerging technologies such as solid oxide electrolyzer cell (SOEC) and anion exchange membrane (AEM) technologies currently play smaller roles.

What drives total costs for electrolyzer projects?

Engineering, procurement and construction (EPC), civil works, permitting, and financing typically make up 40-50% of total project cost. The electrolyzer stack itself usually accounts for only one-third of the overall cost. The greatest cost reduction opportunities lie not in the electrolyzer stack itself, but in the balance of plant costs, construction, and system integration. Economies of scale, design standardization, and supply chain consolidation can meaningfully reduce costs.

What is the most important factor in determining hydrogen production cost?

The cost of electricity fundamentally influences project economics. The most competitive projects can generate hydrogen at around $3 per kilogram, but this is achievable only where renewable electricity is both affordable and dependable.

What should developers consider when procuring electrolyzers?

A holistic approach to electrolyzer procurement is essential. Buyers should evaluate systems not only on headline efficiency or stack specifications but also on the full set of technical, operational, and financial factors that determine long-term project value. The methodology below explains strategic steps for selecting electrolyzers.

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