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Newlight Tests Hydrogen-Hybrid System on Long-Range Cargo Ship

Large commercial bulk carrier using Newlight's hydrogen-hybrid maritime energy system at sea.
Newlight tests a hydrogen-hybrid propulsion system on a long-range cargo ship to reduce emissions and improve fuel efficiency. Credit: Pixel

Newlight has completed a long-range commercial voyage using its hydrogen-hybrid energy system on a large Lomar Shipping bulk carrier. During the 8,500-nautical-mile journey from Singapore to Ghana, the system cut fuel use by 24%, CO₂ emissions by 28%, and carbon monoxide emissions by 22%.

The system is designed to improve the efficiency of existing diesel engines. Instead of replacing the engine or switching fully to a new fuel, it combines a small amount of hydrogen with diesel and uses AI-guided controls to manage combustion.

The voyage was carried out on a 199-meter-long bulk carrier with a capacity of 57,038 deadweight tons. According to Newlight, the test showed that its technology could deliver fuel and emissions savings during a real commercial voyage rather than only in controlled testing.

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The company said the voyage marks an important step toward deploying the technology across multiple vessels. It also provides a real-world test of using hydrogen alongside conventional marine fuel.

Newlight developed the retrofit system for large commercial ships. The company was founded by Haran Cohen Hillel and Evyatar Cohen, who have backgrounds in engineering, management, and naval service.

The project was also supported by Lomar Shipping and its venture arm, lomarlabs, along with other technology and investment partners. According to Newlight, commercial agreements now cover 12 vessels, with wider fleet deployments planned.

Shipping depends heavily on diesel-based engines and consumes large amounts of fuel every year. Operators also face growing pressure to reduce emissions while keeping older vessels in service.

Replacing an entire fleet with new ships or waiting for alternative-fuel infrastructure can take years. Newlight’s approach focuses on upgrading ships that are already operating.

The system injects a small amount of hydrogen into the existing diesel combustion process. A real-time controller monitors engine conditions and adjusts the hydrogen injection as the engine’s load and speed change.

The technology can also operate on diesel alone when hydrogen is not available. This could make it easier for operators to use the system without depending entirely on new hydrogen-fueling infrastructure.

Newlight says the measured performance could translate into annual savings of around $500,000 for similar vessels. The company estimates that the system could pay for itself in less than 18 months, based on the reported performance.

Another benefit is the retrofit process. Newlight says installation can take around one to two weeks while a vessel remains in operation, avoiding the need for a traditional drydock period.

The technology still depends on hydrogen availability for its full hybrid operation. While the system can run on diesel alone, access to reliable hydrogen supplies remains an important factor for wider adoption.

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The reported results also come from a commercial voyage involving one vessel. More deployments and longer-term testing across different ship types will be needed to understand how consistently the savings can be achieved.

The shipping industry needs practical ways to lower fuel use and emissions from the large number of diesel-powered vessels already in service. Newlight’s retrofit model offers one possible route without requiring operators to immediately replace their existing engines.

The successful voyage could help move hydrogen-assisted combustion from testing toward wider commercial use. Further vessel deployments will show whether the reported efficiency gains can be repeated across larger fleets.

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