Compressed Natural Gas (CNG)

CNG Fueling Station

Natural gas is domestically produced and readily available to consumers throughout the United States. It is also clean-burning and produces significantly fewer harmful emissions than reformulated gasoline or diesel when used in natural gas vehicles.

In addition, commercially available medium- and heavy-duty natural gas engines have demonstrated over 90% reductions of carbon monoxide (CO) and particulate matter, and a more than 50% reduction in nitrogen oxides (NO) relative to commercial diesel engines.


Natural gas can either be stored on-board a vehicle as compressed natural gas (CNG) at 3,000 or 3,600 psi, or as liquefied natural gas (LNG), typically at 20-150 psi. LNG is cooled to -260°F at ambient temperatures. Natural gas can also be blended with hydrogen.


Natural Gas Links

EPA & CARB Certified CNG Conversion Kits – EPA’s listing of all vehicles eligible for CNG conversion.

Benefits of CNG Refuse Trucks for Tulsa – View a presentation made by Tulsa Area Clean Cities to Tulsa’s TARE board on the benefits of CNG refuse trucks.
Natural Gas Basics – Learn the basics about natural gas as a fuel from the Department of Energy’s Alternative Fuel Data Center.
Natural Gas Vehicles for America – For more information on CNG and propane (LNG).
America’s Natural Gas Alliance – Information on the economic impact of CNG on America.