H2SITE's technology, which converts ammonia to hydrogen for onboard use, has received Approval in Principle (AiP) from Lloyd's Register (LR). This containerized solution produces high-quality hydrogen suitable for fuel cells, which can power the vessel electrically, or it can be used directly in an internal combustion engine (ICE).

The utilization of ammonia cracking as a hydrogen carrier for onboard applications is increasingly promising. This system, developed by H2SITE, relies on hydrogen-selective membranes to overcome the thermodynamic constraints of the ammonia cracking process. By continuously recovering hydrogen, it achieves nearly complete ammonia conversion and enhances efficiencies at lower temperatures, thereby lowering overall energy consumption and footprint.

The issuance of the AIP involved a comprehensive assessment of the design and layout, encompassing fundamental design aspects and adherence to LR’s Rules and Regulations for the Classification of Ships utilizing Gases or other Low-flashpoint Fuels. Initial rule evaluation was followed by a risk assessment to ensure the mitigation of risks associated with ammonia and hydrogen usage, in accordance with LR’s ShipRight Procedure for Risk-Based Certification (RBC).

Last November, H2SITE conducted an operational demonstration of its ammonia to hydrogen power technology aboard the Zumaia Offshore’s Bertha B vessel. This validated its performance under real offshore conditions.

"After conducting comprehensive technical validation at the kW scale through the H2Ocean and APOLO projects, our next step is to scale up H2SITE’s membrane reactors to the MW scale," stated Jose Medrano, Technical Director at H2SITE.

The AMMONIA to H2POWER systems will be incorporated into propulsion systems and auxiliary power units, catering to various vessels including offshore platforms, tankers, and gas carriers.

Mark Darley, Chief Operations Officer at Lloyd’s Register, commented, "H2SITE's AMMONIA to H2POWER technology presents an intriguing prospect for shipowners to convert ammonia and other feedstocks like methanol into hydrogen directly onboard their vessels, without the need for additional gas separation technology.

"We are delighted to grant the Approval in Principle for this innovative solution, and we are committed to collaborating with the maritime industry to offer zero-emission power solutions, advancing towards a greener, more sustainable future."

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