The “Hydrogen Mirage”: Green Steel Timelines Slip as High Costs and Slow Electrolyzer Scaling Hinder Commercial Deployment in Europe

July 19, 2026

Steelonthenet Europe

Overview

Hydrogen-based green steel, central to Europe’s decarbonization strategy, is experiencing significant project delays, exposing challenges in achieving commercial-scale deployment. Major initiatives are falling behind initial targets due to persistently high green hydrogen costs and slower-than-anticipated electrolyzer production scaling. While acknowledging the technology’s potential, current timelines are deemed unrealistic, urging policymakers to adopt longer-term transition plans.

In Depth

Background

The European Union (EU) has set stringent climate change targets and is strongly promoting the decarbonization of energy-intensive industries, particularly the steel sector. Green steel is a central element of the EU’s “Green Deal” strategy, benefiting from policy support and subsidies. However, this report suggests that initial technological optimism may have overlooked economic realities and the complexities of infrastructure development.

Supporting this view, reports from organizations like the Rocky Mountain Institute (RMI) also indicate that hydrogen-based Direct Reduced Iron (H2-DRI) carries a significant cost premium over conventional methods, estimating that converting existing DRI facilities to hydrogen would cost $150-200 million.

Key Findings

Hydrogen-based green steel, a cornerstone of Europe’s decarbonization strategy, is encountering substantial delays in its commercial-scale deployment, revealing greater difficulties than initially anticipated. Numerous key green steel projects are significantly behind their original targets, primarily due to the persistently high production costs of green hydrogen. Furthermore, the scaling of electrolyzer production capacity, crucial for hydrogen generation, has not met expectations, underscoring a critical lag in technology dissemination and infrastructure development.

The steelmaking process combining H2-DRI with Electric Arc Furnaces (EAFs) theoretically offers substantial CO2 emission reductions compared to conventional blast furnace methods, positioning it as a pathway to nearly zero-emission steelmaking. However, the cost of green hydrogen, essential for H2-DRI, remains prohibitively high. The capital costs for renewable energy generation and the operational costs of electrolyzers are still elevated, requiring further technological innovation and economies of scale to achieve widespread economic viability.

Globally, electrolyzer manufacturing capacity is still in its expansion phase and has not yet reached a level sufficient to supply the volume of green hydrogen needed for planned projects. Supply chain bottlenecks and technical challenges persist, hindering rapid deployment.

While acknowledging the long-term potential of hydrogen-based steelmaking, current timelines for its widespread realization are increasingly seen as unrealistic. This calls upon policymakers to develop more pragmatic and long-term transition plans, emphasizing the need for sustained support for technology development, cost reduction, and infrastructure build-out. Investors and steel manufacturers will need to closely monitor green hydrogen cost trends and electrolyzer supply, cautiously evaluating the pace of market introduction. In the short term, the report suggests considering pragmatic intermediate steps such as improving the efficiency of existing facilities or combining them with Carbon Capture and Storage (CCS) technologies to bridge the gap.

Source: https://www.steelonthenet.com/insights/green-steel-promises.html

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