Alternative Fuel and Conversion Definitions

Clean transportation fuels include propane, compressed natural gas (CNG), liquefied natural gas (LNG), electricity, and other transportation fuels determined to be comparable with respect to emissions. Propane is defined as a hydrocarbon mixture produced as a by-product of natural gas processing and petroleum refining and condensed into liquid form for sale or use as a motor fuel. CNG is defined as pipeline-quality natural gas that is compressed and provided for sale or use as a motor vehicle fuel. LNG is defined as pipeline-quality natural gas treated to remove water, hydrogen sulfide, carbon dioxide, and other components that will freeze and condense into liquid form for sale or use as a motor vehicle fuel.

A bi-fuel system is defined as the power system for motor vehicles powered by gasoline and either CNG or LNG. Bi-fuel systems are considered clean fuel systems. Conversion is defined as repowering a motor vehicle or special mobile equipment by replacing its original gasoline or diesel powered engine with one capable of operating on clean transportation fuel or retrofitting a motor vehicle or special mobile equipment with parts that enable its original gasoline or diesel engine to operate on clean transportation fuel.

(Reference Kentucky Revised Statutes 186.750)