SmartPlug™ Technology
The patented McAlister SmartPlug™ is a hydrogen fuel injector-igniter for internal combustion engines, think of a traditional spark-plug, but superior in every way.

Convert Any Existing Engine Into a (ZEV)

SmartPlugs enable all 1.5 billion existing vehicles & generators with Internal Combustion Engines (auto, truck, rail, marine, and aircraft) to be transformed into Zero-Emissions Vehicles (ZEVs), that run on clean liquid Hydrogen fuel.
SmartPlugs enable all 1.5 billion existing vehicles & generators with Internal Combustion Engines (auto, truck, rail, marine, and aircraft) to be transformed into Zero-Emissions Vehicles (ZEVs), that run on clean liquid Hydrogen fuel.





Air Cleaning / Climate Change Mitigation
SmartPlugs Not Only Reduce But Eliminate Urban Air Contaminants

SmartPlugs inject and combust hydrogen at a controlled rate to reduce or eliminate urban air contaminants such as diesel exhaust, soot, carbon particulates, microscopic debris (prions, bacteria, viruses) pollens, and other smoke particles including oxides of nitrogen.
Such air cleaning by stratified hydrogen combustion can be achieved in a furnace, boiler, or internal combustion engine such as a gas turbine or piston engine. Shed tests show exhaust air that is cleaner than intake air.
More than 2 billion existing combustion engines now producing hundreds of billions of horsepower can utilize SmartPlug stratified hydrogen combustion to clean the air, last longer and provide improved performance when needed. We deliver clean air in transportation, electricity generation, industrial and agricultural applications by SmartPlug Stratified Hydrogen Combustion.


Overcome local pollution to mitigate global climate changes
Increase fuel efficiency by approximately 30%
Increase engine power and longevity
Adaptively maximize engine performance per cylinder in real-time
Speed of light sensor feedback of combustion events
Limit peak temperatures for longer engine life and no NOx emissions
Connect SmartPlug to the net to monitor and prevent harmful emissions


McAlister’s SmartPlug™ fuel injector can be scaled from very small engines, like lawnmowers, to large automotive and trucking engines, and very large engines in electricity generation, marine, and rail locomotive applications.
The SmartPlug™ retrofit includes a heat conversion system that enables liquid Metrol™ to become high-pressure hydrogen for clean and highly efficient combustion.
McAlister holds the vision that more than a billion existing engines can be practically retrofitted to run on hydrogen and thus clean the air (removing carbon particulates and smog) as they do work, and in so doing powerfully reverse the damage that has been done to the environment during the first two hundred years of the carbon-burning industrial revolution.

Retrofit of existing combustion engines to clean hydrogen necessarily applies to both transportation (mobile) and electrical generation (stationary) engines. This is because electricity generators include both internal combustion gas turbines and external combustion steam engines that presently produce about an equivalent quantity of CO2 emissions as transportation applications with internal combustion piston and gas turbine engines.
Many transportation engines can have a longer life-cycle by being re-purposed for CHP distributed energy generation (micro-grid nodes) to supply clean hydrogen power and heat for homes/neighborhoods, and business/commercial buildings without significant CO2 emissions.
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