H400 Fuel Cell Module

Zero-emission power, built to scale.

Zero Emissions

400kW Output

Scalable to MW

Moving beyond combustion-based power

As maritime regulation moves toward net-zero operations, many technologies reduce emissions while still relying on combustion and complex aftertreatment. The H400 replaces combustion-based generation with hydrogen-electric power, delivering 400 kW of continuous output engineered for the reliability required in commercial maritime vessels. Read more about the advantages of hydrogen.

A high-density 400 kW module built for maritime integration

Delivering industry-leading energy density in a 400 kW format, the H400 forms the core unit of modular multi-megawatt hydrogen power systems.

High Energy Density

Optimized integration enables high output within a controlled footprint, supporting installations where volume and weight are critical constraints.

Modular Scalability

Standardized 400 kW units integrate within a shared electrical and control framework, enabling structured scaling without redesigning the core platform.

Reliability and Safety

Based on proven PEM technology, the H400 is engineered for stable performance in maritime environments with integrated safety systems and controlled operating conditions.

Modular system architecture designed for megawatt scale

Applicable across both maritime and stationary systems, the H400 forms the foundation of a modular system architecture designed to scale predictably with vessel power requirements, from single-module installations to multi-megawatt configurations.

High Power Density

Each H400 delivers 400 kW in a single integrated module, reducing the number of units required per megawatt and supporting compact system layouts.

Designed for MW

Standardized H400 modules combine within a shared electrical and control architecture, enabling structured expansion to multi-megawatt installations.

Flexible Configurations

System configurations can be tailored to vessel-specific duty cycles and power demands while maintaining standardized interfaces and platform consistency.

Redundant System

Distributed multi-module systems provide inherent redundancy, allowing individual units to be isolated without interrupting overall power delivery, supported by integrated safety systems.

Integrated Software

Helinor software manages load distribution, operating parameters, and system supervision to support stable performance and efficient energy utilization across operating modes.

3D rendering of HELINOR Power Box 125 fuel cell modules integrated in a ship, showcasing scalable hydrogen technology to convert any vessel to zero-emission operations

Integration pathways for newbuild and retrofit projects

The H400 is engineered for structured integration in both newbuild and retrofit applications. The standardized module format supports installation in hydrogen-ready rooms or as containerized systems, enabling deployment aligned with vessel layout, available space, and project constraints.

Lone offshore vessel in rough seas under stormy skies, representing HELINOR Energy’s commitment to delivering reliable, zero-emission maritime power in all conditions

Unlock Your Vessel's Potential

Explore your vessel’s hydrogen potential with a free, non-binding case study. Get in touch to receive extensive technical data, a detailed analysis of fuel cell power and storage needs, and insights into capital and operational costs.

Frequently Asked Questions

What is required to operate a vessel on hydrogen?

Operating on hydrogen requires a fuel cell power system, hydrogen storage, fuel distribution and integration with the vessel’s electrical or propulsion architecture. These systems must be designed in accordance with applicable maritime safety regulations and classification requirements.

How does the system respond to dynamic loads?

PEM fuel cell technology allows rapid load response and stable electrical output. The H400 control system manages power distribution and load balancing across modules to support dynamic vessel operations.

What is included in the Helinor scope of supply?

The Helinor scope of supply typically includes the H400 fuel cell modules, a tailored DC-DC converter, and system control and monitoring software. We also provide integration support, engineering documentation and interfaces for hydrogen storage and fuel supply systems through selected partners.

Do you offer containerized fuel cell systems?

Yes. The H400 modules can be integrated into containerized hydrogen-electric power systems. Standard configurations enable multi-megawatt installations while maintaining the modular architecture of the H400 platform.

How are the systems certified?

Helinor systems are developed in alignment with international maritime regulations and classification society requirements. Certification pathways include DNV type approval and subsequent approval processes with other classification societies as required by the vessel project.

When will the H400 be commercially available?

The H400 platform is currently under development, with pilot installations planned prior to full commercial deployment.