Power to Hydrogen: 500 kW AEM electrolyzer specs and deployment

September 26, 2026

Port of Antwerp-Bruges Belgium

Overview

Power to Hydrogen (P2H2), a developer of Anion Exchange Membrane (AEM) electrolyzer systems, has commenced commercial green hydrogen production at the NextGen District of the Port of Antwerp-Bruges. The deployed 500 kW system, comprising two 250 kW stacks, represents the world’s first commercial deployment of a 250 kW AEM stack. This system will produce up to 70 tons of green hydrogen annually for regional gas suppliers like Holthausen, demonstrating the commercial viability and potential of AEM technology for the hydrogen economy.

In Depth

Key Findings

Power to Hydrogen (P2H2), a pioneer in Anion Exchange Membrane (AEM) electrolyzer systems, has launched groundbreaking commercial-scale green hydrogen production at the NextGen District within the Port of Antwerp-Bruges. The 500 kW system, composed of two 250 kW stacks, marks a world first for the commercial deployment of a 250 kW AEM stack. This achievement significantly advances the development of more cost-effective and efficient green hydrogen production technologies.

Technical and Project Details

AEM Electrolyzer Innovation: A key feature of P2H2’s AEM electrolyzer technology is its ability to operate without expensive platinum group metal catalysts, relying instead on more affordable materials. This represents a substantial cost reduction compared to Proton Exchange Membrane (PEM) electrolyzers, contributing to a lower overall cost for green hydrogen production.
System Configuration and Capacity: The 500 kW system utilizes two AEM electrolyzer stacks, each with a 250 kW output. This setup enables the production of up to 70 tons of green hydrogen annually, which will be supplied to regional gas distributors such as Holthausen. This marks the beginning of stable commercial supply, albeit at a smaller scale.
Role of NextGen District: The NextGen District at the Port of Antwerp-Bruges is positioned as an innovation hub for the circular economy, providing an ecosystem that supports the demonstration and commercialization of advanced clean energy technologies like those from P2H2.

Background and Industry Context

While green hydrogen is considered crucial for global energy transition and decarbonization, its production costs remain a challenge. Conventional PEM electrolyzers offer high efficiency but are limited by the high cost of their noble metal catalysts. AEM electrolyzers are gaining significant attention as a next-generation technology that can overcome these cost barriers, offering a promising balance of efficiency and economic viability. P2H2’s commencement of commercial production clearly indicates AEM technology’s transition from laboratory scale to practical application.

Outlook and Strategic Significance

The commercial deployment of P2H2’s 500 kW AEM electrolyzer system paves the way for AEM technology to become a competitive option for large-scale green hydrogen production. This success is expected to provide strong impetus for other AEM developers and investors, accelerating further technological advancement and market adoption. In the future, the development of larger AEM systems and further reductions in green hydrogen production costs are anticipated to play an indispensable role in the widespread adoption of the hydrogen economy. Commercialization in strategic locations like the Port of Antwerp-Bruges also enhances AEM technology’s global standing in the international hydrogen supply chain.

Source: https://www.portofantwerpbruges.com/en/news/power-hydrogen-begins-commercial-green-hydrogen-production

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