Cleaner combustion for the engines running today and combustion-free hydrogen for the economy of tomorrow, both working to eliminate black carbon.
LeefH2™ and the Hydrogen Carbon Cleaner (HCC) help the engines already on the road burn cleaner today, saving fuel, money and maintenance while cutting black carbon in half.
Discover LeefH2™SHEP™ produces clean hydrogen, while CHRS™ and mobile refueling deliver it, building the hydrogen economy for applications that eliminate combustion altogether.
Explore the TechnologyOur technologies deliver practical, quantifiable outcomes for industries and the planet.
LeefH2™ (Leveraging Energy Efficient Fuel with Hydrogen) is an advanced hydrogen-assisted fuel optimization technology engineered to enhance combustion efficiency in existing diesel, gasoline, and hybrid engines.
Rather than replacing engines, LeefH2™ integrates directly with your fleet, improving performance and reducing emissions at the source. Pure hydrogen is generated on-demand from distilled water using efficient PEM hydrolysis, requiring no chemical storage or pressurized tanks.
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Pure hydrogen (99.99%) is generated instantly from distilled water using efficient PEM hydrolysis, with no chemical storage or pressurized tanks required.
A high-precision control chip reads engine injection and shift timing to release trace hydrogen at the precise microsecond for optimal combustion.
Improves fuel economy by 10–20%, boosts power and torque, and deeply cleans carbon deposits, extending engine life and reducing maintenance.
Black carbon, the fine soot released from incomplete combustion of fossil fuels, biofuels, and biomass, is a leading driver of cryosphere warming. When soot settles on snow and ice, it darkens the surface, dramatically reducing reflectivity and accelerating glacial melt.
Unlike CO₂, black carbon stays in the atmosphere for only days to weeks. This means reducing it delivers an immediate climate benefit, making it one of the fastest ways to slow warming in the near term.
Diesel engines, heavy-duty vehicles, shipping, industrial combustion, residential solid fuel burning, and wildfires are the primary sources of black carbon emissions worldwide.
Black carbon is a component of fine particulate matter (PM2.5), linked to respiratory disease, cardiovascular issues, and premature death. Air pollution is linked to 7M+ deaths per year.
Deposits on snow and ice reduce albedo (reflectivity), accelerating melt. This threatens freshwater supplies, raises sea levels, and disrupts fragile polar ecosystems.
Comes from diesel & fuel combustion. Short-lived in the atmosphere. Major warming impact. Affects human health.
Main greenhouse gas. Long-term climate impact. Global warming. Comes from all combustion sources.
Build up inside engines. Reduce performance. Increase fuel consumption. Are removed by HCC cleaning.
An integrated suite of modular systems designed to produce, store, dispense, and optimize hydrogen energy.
Scalable Hydrogen Energy Platform. Produces up to 500 kg/day of green hydrogen from water.
Learn MoreCompact Hydrogen Refueling Station. Delivers fuel cell-grade hydrogen at 350 or 700 bar.
Learn MoreBring hydrogen directly to your fleet, anywhere, anytime. Flexible and scalable.
Learn MoreHydrogen Carbon Cleaner. Removes carbon deposits from engines without disassembly.
Learn MoreLeefH2™ introduces hydrogen on demand to support more efficient combustion in existing engines.
Learn MoreOur technologies deliver value across four critical dimensions.
Reduce fuel and maintenance costs through improved combustion efficiency.
Achieve 10–20% better fuel economy with hydrogen-assisted combustion.
Cleaner engines experience less wear, fewer deposits, and longer service intervals.
Reduce black carbon and harmful emissions that accelerate climate change.
Our hydrogen technologies are deployed across sectors where reliability and performance matter most.
Improve fuel efficiency, reduce emissions, and extend engine life for truck, bus, and van fleets.
Learn MoreOn-site hydrogen production and refueling for data centers, microgrids, and industrial power.
Learn MoreHydrogen-enhanced combustion for ships, generators, and heavy-duty industrial equipment.
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Founder and Chairman of HNO International, Donald Owens has dedicated over 15 years to developing hydrogen technologies that deliver real climate impact. He is a patent-owning engineer, lawyer, and climate change crusader.
From Helpless to Hopeful in the Race Against Climate Change
Whether you're exploring cleaner combustion or developing hydrogen infrastructure, our team is ready to help you find the right solution.